SAXSdb — 6caj

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Translation initiation factor eIF-2B subunit epsilon

Homo sapiens

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 10 PDB declaration: decameric（10） Consistent with protein copy count	Chain A； UniProt 1–721 Chain B； UniProt 1–721	Not recorded	Translation initiation factor eIF-2B subunit gamma × 2 （Q9NR50） Translation initiation factor eIF-2B subunit alpha × 2 （Q14232） Translation initiation factor eIF-2B subunit beta × 2 （P49770） Translation initiation factor eIF-2B subunit delta × 2 （Q9UI10） C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6CAJ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3JUI Crystal Structure of the C-terminal Domain of Human Translation Initiation Factor eIF2B epsilon Subunit Deposited 2009-09-15	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 548–721（174 aa） Fragment：C-terminal Domain	Mutation：E678G Non-standard monomer：Yes (specific site not provided by mmCIF)	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 7.7；289 K；PEG8000, Calcium acetate, Sodium Cocadylate, pH 7.7, vapor diffusion, temperature 289K	Resolution 2.00 Å R-free 0.279
6EZO Eukaryotic initiation factor EIF2B in complex with ISRIB Deposited 2017-11-16	Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
6K71 eIF2 - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
6K72 eIF2(aP) - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6O81 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.21 Å
6O85 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
6O9Z Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-15	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
7D43 eIF2B-eIF2(aP), aPg complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
7D44 eIF2B-eIF2(aP), aP2 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7D45 eIF2B-eIF2(aP), aP1 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
7D46 eIF2B apo Deposited 2020-09-22	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7F64 eIF2B-SFSV NSs Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.42 Å
7F66 eIF2B-SFSV NSs-1-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.76 Å
7F67 eIF2B-SFSV NSs-2-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.59 Å
7KMF Sugar phosphate activation of the stress sensor eIF2B Deposited 2020-11-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain B 1–721（721 aa） Chain I 1–721（721 aa）	Not recorded	F6P 6-O-phosphono-beta-D-fructofuranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；Prior to grid preparation, the protein mixture was diluted with 25 mM HEPES, 100 mM KCl, 2 mM 446 MgCl2, 1 mM DTT, pH 7.5 to cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.91 Å
7L70 The eukaryotic translation initiation factor 2B from Homo sapiens in its apo form Deposited 2020-12-24	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7L7G Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ) Deposited 2020-12-28	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Mutation：I587V Mutation：I587V	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
7RLO Structure of the human eukaryotic translation initiation factor 2B (eIF2B) in complex with a viral protein NSs Deposited 2021-07-26	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
7TRJ The eukaryotic translation initiation factor 2B from Homo sapiens with a H160D mutation in the beta subunit Deposited 2022-01-29	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7VLK eIF2B-SFSV NSs C2-imposed Deposited 2021-10-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.27 Å
8TQO Eukaryotic translation initiation factor 2B tetramer Deposited 2023-08-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8TQZ Eukaryotic translation initiation factor 2B with a mutation (L516A) in the delta subunit Deposited 2023-08-08	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–721（721 aa） Chain B 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HVD Native human P-eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.04 Å
9HVE Native human eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	GTP GUANOSINE-5'-TRIPHOSPHATE × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9QC6 Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) Deposited 2025-03-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: 11-meric	Chain I 1–721（721 aa） Chain J 1–721（721 aa）	Not recorded	A1I5O ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.83 Å

25 other PDB entries and 25 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EI2BE_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–721； UniProt 1–721 Author chain B； PDBConstruct 1–721； UniProt 1–721

Translation initiation factor eIF-2B subunit gamma

Homo sapiens

UniProt Q9NR50

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 10 PDB declaration: decameric（10） Consistent with protein copy count	Chain I； UniProt 1–452 Chain J； UniProt 1–452	Not recorded	Translation initiation factor eIF-2B subunit epsilon × 2 （Q13144） Translation initiation factor eIF-2B subunit alpha × 2 （Q14232） Translation initiation factor eIF-2B subunit beta × 2 （P49770） Translation initiation factor eIF-2B subunit delta × 2 （Q9UI10） C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6CAJ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6EZO Eukaryotic initiation factor EIF2B in complex with ISRIB Deposited 2017-11-16	Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
6K71 eIF2 - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
6K72 eIF2(aP) - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6O81 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.21 Å
6O85 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
6O9Z Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-15	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
7D43 eIF2B-eIF2(aP), aPg complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
7D44 eIF2B-eIF2(aP), aP2 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7D45 eIF2B-eIF2(aP), aP1 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
7D46 eIF2B apo Deposited 2020-09-22	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7F64 eIF2B-SFSV NSs Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.42 Å
7F66 eIF2B-SFSV NSs-1-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.76 Å
7F67 eIF2B-SFSV NSs-2-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.59 Å
7KMF Sugar phosphate activation of the stress sensor eIF2B Deposited 2020-11-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain J 1–452（452 aa） Chain K 1–452（452 aa）	Not recorded	F6P 6-O-phosphono-beta-D-fructofuranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；Prior to grid preparation, the protein mixture was diluted with 25 mM HEPES, 100 mM KCl, 2 mM 446 MgCl2, 1 mM DTT, pH 7.5 to cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.91 Å
7L70 The eukaryotic translation initiation factor 2B from Homo sapiens in its apo form Deposited 2020-12-24	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7L7G Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ) Deposited 2020-12-28	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
7RLO Structure of the human eukaryotic translation initiation factor 2B (eIF2B) in complex with a viral protein NSs Deposited 2021-07-26	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
7TRJ The eukaryotic translation initiation factor 2B from Homo sapiens with a H160D mutation in the beta subunit Deposited 2022-01-29	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7VLK eIF2B-SFSV NSs C2-imposed Deposited 2021-10-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.27 Å
8TQO Eukaryotic translation initiation factor 2B tetramer Deposited 2023-08-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain I 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8TQZ Eukaryotic translation initiation factor 2B with a mutation (L516A) in the delta subunit Deposited 2023-08-08	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain I 1–452（452 aa） Chain J 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HVD Native human P-eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.04 Å
9HVE Native human eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	GTP GUANOSINE-5'-TRIPHOSPHATE × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9HVF Native human PPP1R15B-P-eIF2-eIF2B complex Deposited 2024-12-27	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain E 1–452（452 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
9QC6 Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) Deposited 2025-03-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: 11-meric	Chain E 1–452（452 aa） Chain F 1–452（452 aa）	Not recorded	A1I5O ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.83 Å

25 other PDB entries and 25 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EI2BG_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain I； PDBConstruct 1–452； UniProt 1–452 Author chain J； PDBConstruct 1–452； UniProt 1–452

Translation initiation factor eIF-2B subunit alpha

Homo sapiens

UniProt Q14232

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 10 PDB declaration: decameric（10） Consistent with protein copy count	Chain G； UniProt 1–305 Chain H； UniProt 1–305	Not recorded	Translation initiation factor eIF-2B subunit epsilon × 2 （Q13144） Translation initiation factor eIF-2B subunit gamma × 2 （Q9NR50） Translation initiation factor eIF-2B subunit beta × 2 （P49770） Translation initiation factor eIF-2B subunit delta × 2 （Q9UI10） C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6CAJ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3ECS Crystal structure of human eIF2B alpha Deposited 2008-09-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 8 PDB declaration: octameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa） Chain C 1–305（305 aa） Chain D 1–305（305 aa） Chain E 1–305（305 aa） Chain F 1–305（305 aa） Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 10 CL CHLORIDE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1M Sodium Citrate buffer(pH 4.5), 0.1M Ammonium Sulfate, 13% polyethylene glycol(PEG) 4000, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.65 Å R-free 0.273
6EZO Eukaryotic initiation factor EIF2B in complex with ISRIB Deposited 2017-11-16	Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
6K71 eIF2 - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
6K72 eIF2(aP) - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6O81 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.21 Å
6O85 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
6O9Z Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-15	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
7D43 eIF2B-eIF2(aP), aPg complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
7D44 eIF2B-eIF2(aP), aP2 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7D45 eIF2B-eIF2(aP), aP1 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
7D46 eIF2B apo Deposited 2020-09-22	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7F64 eIF2B-SFSV NSs Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.42 Å
7F66 eIF2B-SFSV NSs-1-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.76 Å
7F67 eIF2B-SFSV NSs-2-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.59 Å
7KMA Crystal structure of eif2Balpha with a ligand. Deposited 2020-11-02	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–305（305 aa） Chain C 1–305（305 aa）	Not recorded	M6P 6-O-phosphono-alpha-D-mannopyranose × 2 ACT ACETATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；12% PEG 4000, 100 mM sodium acetate, 100 mM ammonium sulfate, 0.5% octyl-beta-glucoside, pH 4.6	Resolution 2.70 Å R-free 0.238
7KMA Crystal structure of eif2Balpha with a ligand. Deposited 2020-11-02	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	M6P 6-O-phosphono-alpha-D-mannopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；12% PEG 4000, 100 mM sodium acetate, 100 mM ammonium sulfate, 0.5% octyl-beta-glucoside, pH 4.6	Resolution 2.70 Å R-free 0.238
7KMA Crystal structure of eif2Balpha with a ligand. Deposited 2020-11-02	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain D 1–305（305 aa） Chain E 1–305（305 aa）	Not recorded	M6P 6-O-phosphono-alpha-D-mannopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；12% PEG 4000, 100 mM sodium acetate, 100 mM ammonium sulfate, 0.5% octyl-beta-glucoside, pH 4.6	Resolution 2.70 Å R-free 0.238
7KMA Crystal structure of eif2Balpha with a ligand. Deposited 2020-11-02	Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain F 1–305（305 aa） Chain G 1–305（305 aa）	Not recorded	M6P 6-O-phosphono-alpha-D-mannopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；12% PEG 4000, 100 mM sodium acetate, 100 mM ammonium sulfate, 0.5% octyl-beta-glucoside, pH 4.6	Resolution 2.70 Å R-free 0.238
7KMF Sugar phosphate activation of the stress sensor eIF2B Deposited 2020-11-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	F6P 6-O-phosphono-beta-D-fructofuranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；Prior to grid preparation, the protein mixture was diluted with 25 mM HEPES, 100 mM KCl, 2 mM 446 MgCl2, 1 mM DTT, pH 7.5 to cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.91 Å
7L70 The eukaryotic translation initiation factor 2B from Homo sapiens in its apo form Deposited 2020-12-24	Different construct Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 2–305（304 aa） Chain H 2–305（304 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7L7G Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ) Deposited 2020-12-28	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
7RLO Structure of the human eukaryotic translation initiation factor 2B (eIF2B) in complex with a viral protein NSs Deposited 2021-07-26	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
7TRJ The eukaryotic translation initiation factor 2B from Homo sapiens with a H160D mutation in the beta subunit Deposited 2022-01-29	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 1–305（305 aa） Chain H 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7VLK eIF2B-SFSV NSs C2-imposed Deposited 2021-10-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.27 Å
8TQZ Eukaryotic translation initiation factor 2B with a mutation (L516A) in the delta subunit Deposited 2023-08-08	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 2–305（304 aa） Chain H 2–305（304 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HVD Native human P-eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.04 Å
9HVE Native human eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	GTP GUANOSINE-5'-TRIPHOSPHATE × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9QC6 Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) Deposited 2025-03-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: 11-meric	Chain A 1–305（305 aa） Chain B 1–305（305 aa）	Not recorded	A1I5O ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.83 Å
9ZUZ Translation Initiation Factor eIF-2B complex with the Isohexide Diamine GSK735 Deposited 2025-12-29	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–305（305 aa）	Not recorded	PRO PROLINE × 2 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 2 A1C32 1,4:3,6-dianhydro-2,5-bis[2-(4-chlorophenoxy)acetamido]-2,5-dideoxy-D-glucitol × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；0.2 M Proline, 0.1 M hepes pH 7.5, 8.6 % Peg3350	Resolution 2.25 Å R-free 0.237

26 other PDB entries and 29 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EI2BA_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain G； PDBConstruct 1–305； UniProt 1–305 Author chain H； PDBConstruct 1–305； UniProt 1–305

Translation initiation factor eIF-2B subunit beta

Homo sapiens

UniProt P49770

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 10 PDB declaration: decameric（10） Consistent with protein copy count	Chain C； UniProt 2–351 Chain D； UniProt 2–351	Not recorded	Translation initiation factor eIF-2B subunit epsilon × 2 （Q13144） Translation initiation factor eIF-2B subunit gamma × 2 （Q9NR50） Translation initiation factor eIF-2B subunit alpha × 2 （Q14232） Translation initiation factor eIF-2B subunit delta × 2 （Q9UI10） C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6CAJ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
12FH Structure of eIF2B bound to a activator Deposited 2026-04-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 3.50 Å R-free 0.271
6EZO Eukaryotic initiation factor EIF2B in complex with ISRIB Deposited 2017-11-16	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 5–351（347 aa） Chain D 5–351（347 aa）	Mutation：3xFLAG inserted at position +4 of the protein sequence Mutation：3xFLAG inserted at position +4 of the protein sequence	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
6K71 eIF2 - eIF2B complex Deposited 2019-06-05	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
6K72 eIF2(aP) - eIF2B complex Deposited 2019-06-05	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6O81 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.21 Å
6O85 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
6O9Z Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-15	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
7D43 eIF2B-eIF2(aP), aPg complex Deposited 2020-09-22	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
7D44 eIF2B-eIF2(aP), aP2 complex Deposited 2020-09-22	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7D45 eIF2B-eIF2(aP), aP1 complex Deposited 2020-09-22	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
7D46 eIF2B apo Deposited 2020-09-22	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7F64 eIF2B-SFSV NSs Deposited 2021-06-24	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.42 Å
7F66 eIF2B-SFSV NSs-1-eIF2 Deposited 2021-06-24	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.76 Å
7F67 eIF2B-SFSV NSs-2-eIF2 Deposited 2021-06-24	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.59 Å
7KMF Sugar phosphate activation of the stress sensor eIF2B Deposited 2020-11-02	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	F6P 6-O-phosphono-beta-D-fructofuranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；Prior to grid preparation, the protein mixture was diluted with 25 mM HEPES, 100 mM KCl, 2 mM 446 MgCl2, 1 mM DTT, pH 7.5 to cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.91 Å
7L70 The eukaryotic translation initiation factor 2B from Homo sapiens in its apo form Deposited 2020-12-24	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7L7G Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ) Deposited 2020-12-28	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
7RLO Structure of the human eukaryotic translation initiation factor 2B (eIF2B) in complex with a viral protein NSs Deposited 2021-07-26	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
7TRJ The eukaryotic translation initiation factor 2B from Homo sapiens with a H160D mutation in the beta subunit Deposited 2022-01-29	Different construct Different mutation/modification Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Mutation：H160D Mutation：H160D	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7VLK eIF2B-SFSV NSs C2-imposed Deposited 2021-10-04	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.27 Å
8TQO Eukaryotic translation initiation factor 2B tetramer Deposited 2023-08-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain D 2–351（350 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8TQZ Eukaryotic translation initiation factor 2B with a mutation (L516A) in the delta subunit Deposited 2023-08-08	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain C 2–351（350 aa） Chain D 2–351（350 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HVD Native human P-eIF2-eIF2B complex Deposited 2024-12-27	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.04 Å
9HVE Native human eIF2-eIF2B complex Deposited 2024-12-27	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	GTP GUANOSINE-5'-TRIPHOSPHATE × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9QC6 Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) Deposited 2025-03-04	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: 11-meric	Chain C 1–351（351 aa） Chain D 1–351（351 aa）	Not recorded	A1I5O ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.83 Å
9ZUZ Translation Initiation Factor eIF-2B complex with the Isohexide Diamine GSK735 Deposited 2025-12-29	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain B 1–351（351 aa）	Not recorded	PRO PROLINE × 2 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 2 A1C32 1,4:3,6-dianhydro-2,5-bis[2-(4-chlorophenoxy)acetamido]-2,5-dideoxy-D-glucitol × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；0.2 M Proline, 0.1 M hepes pH 7.5, 8.6 % Peg3350	Resolution 2.25 Å R-free 0.237

26 other PDB entries and 26 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EI2BB_HUMAN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain C； PDBConstruct 19–368； UniProt 2–351 Author chain D； PDBConstruct 19–368； UniProt 2–351

Translation initiation factor eIF-2B subunit delta

Homo sapiens

UniProt Q9UI10

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 10 PDB declaration: decameric（10） Consistent with protein copy count	Chain E； UniProt 1–523 Chain F； UniProt 1–523	Not recorded	Translation initiation factor eIF-2B subunit epsilon × 2 （Q13144） Translation initiation factor eIF-2B subunit gamma × 2 （Q9NR50） Translation initiation factor eIF-2B subunit alpha × 2 （Q14232） Translation initiation factor eIF-2B subunit beta × 2 （P49770） C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6CAJ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
12FH Structure of eIF2B bound to a activator Deposited 2026-04-01	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric	Chain A 2–543（542 aa） Chain B 2–543（542 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 3.50 Å R-free 0.271
6EZO Eukaryotic initiation factor EIF2B in complex with ISRIB Deposited 2017-11-16	Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å
6K71 eIF2 - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
6K72 eIF2(aP) - eIF2B complex Deposited 2019-06-05	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6O81 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.21 Å
6O85 Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-08	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
6O9Z Electron cryo-microscopy of the eukaryotic translation initiation factor 2B bound to eukaryotic translation initiation factor 2 from Homo sapiens Deposited 2019-03-15	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.03 Å
7D43 eIF2B-eIF2(aP), aPg complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.30 Å
7D44 eIF2B-eIF2(aP), aP2 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7D45 eIF2B-eIF2(aP), aP1 complex Deposited 2020-09-22	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
7D46 eIF2B apo Deposited 2020-09-22	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
7F64 eIF2B-SFSV NSs Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.42 Å
7F66 eIF2B-SFSV NSs-1-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.76 Å
7F67 eIF2B-SFSV NSs-2-eIF2 Deposited 2021-06-24	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.59 Å
7KMF Sugar phosphate activation of the stress sensor eIF2B Deposited 2020-11-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	F6P 6-O-phosphono-beta-D-fructofuranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5；Prior to grid preparation, the protein mixture was diluted with 25 mM HEPES, 100 mM KCl, 2 mM 446 MgCl2, 1 mM DTT, pH 7.5 to cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.91 Å
7L70 The eukaryotic translation initiation factor 2B from Homo sapiens in its apo form Deposited 2020-12-24	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7L7G Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens (updated model of PDB ID: 6CAJ) Deposited 2020-12-28	Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	C7B 2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
7RLO Structure of the human eukaryotic translation initiation factor 2B (eIF2B) in complex with a viral protein NSs Deposited 2021-07-26	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.60 Å
7TRJ The eukaryotic translation initiation factor 2B from Homo sapiens with a H160D mutation in the beta subunit Deposited 2022-01-29	Different ligand/ion	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
7VLK eIF2B-SFSV NSs C2-imposed Deposited 2021-10-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: dodecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.27 Å
8TQO Eukaryotic translation initiation factor 2B tetramer Deposited 2023-08-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain E 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
8TQZ Eukaryotic translation initiation factor 2B with a mutation (L516A) in the delta subunit Deposited 2023-08-08	Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric	Chain E 1–523（523 aa） Chain F 1–523（523 aa）	Mutation：L516A Mutation：L516A	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HVD Native human P-eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.04 Å
9HVE Native human eIF2-eIF2B complex Deposited 2024-12-27	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	GTP GUANOSINE-5'-TRIPHOSPHATE × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
9QC6 Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) Deposited 2025-03-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: 11-meric	Chain G 1–523（523 aa） Chain H 1–523（523 aa）	Not recorded	A1I5O ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.83 Å
9ZUZ Translation Initiation Factor eIF-2B complex with the Isohexide Diamine GSK735 Deposited 2025-12-29	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain D 164–523（360 aa）	Not recorded	PRO PROLINE × 2 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 2 A1C32 1,4:3,6-dianhydro-2,5-bis[2-(4-chlorophenoxy)acetamido]-2,5-dideoxy-D-glucitol × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；277 K；0.2 M Proline, 0.1 M hepes pH 7.5, 8.6 % Peg3350	Resolution 2.25 Å R-free 0.237

26 other PDB entries and 26 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	EI2BD_HUMAN
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–523； UniProt 1–523 Author chain F； PDBConstruct 1–523； UniProt 1–523

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	6caj
Deposition date deposition_date	2018-01-31
Structure title title	Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens
Keywords keywords	guanine nucleotide exchange factor, translation initiation, ISRIB-bound, decameric complex, TRANSLATION; TRANSLATION
Experimental Method method	ELECTRON MICROSCOPY

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	49.32 Å
Radius of gyration Rg (electron density) rg_electron	48.84 Å
Forward intensity I(0) i0	1672160000.00
Molecular weight molecular_weight	344760.0 kDa
Excluded volume excluded_volume	433440 Å³
Envelope volume envelope_volume	603430 Å³
Hydration-shell volume shell_volume	100120 Å³
Envelope diameter envelope_diameter	165.8 Å
Shell Rg shell_rg	54.19 Å
Envelope Rg envelope_rg	48.95 Å
Shape Rg shape_rg	48.89 Å
Total Rg total_rg	48.87 Å
Total atoms total_atoms	24265
Residues n_residues	3210
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	163.8 Å
Rg (real space) rg_real	49.23 Å
Rg uncertainty (real space) rg_real_error	1.22 Å
I(0) (real space) i0_real	1.6720e+09
I(0) uncertainty (real space) i0_real_error	3.0470e+07
Rg (reciprocal space) rg_reciprocal	49.32 Å
I(0) (reciprocal space) i0_reciprocal	1672000000.0000
Solution quality estimate total_estimate	0.8140
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	56.3 Å
Skewness Skewness skewness	0.312
Kurtosis Kurtosis kurtosis	-0.394
Angular range angular_range	— – 0.1600 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	241400000.0000
Real-space data points n_real_points	33
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.860; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Description description	Translation initiation factor eIF-2B subunit epsilon
Molecular weight formula_weight	80452.6 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,A
Atom count atom_count	24295

MAAPVVAPPGVVVSRANKRSGAGPGGSGGGGARGAEEEPPPPLQAVLVADSFDRRFFPISKDQPRVLLPLANVALIDYTLEFLTATGVQETFVFCCWKAAQIKEHLLKSKWCRPTSLNVVRIITSELYRSLGDVLRDVDAKALVRSDFLLVYGDVISNINITRALEEHRLRRKLEKNVSVMTMIFKESSPSHPTRCHEDNVVVAVDSTTNRVLHFQKTQGLRRFAFPLSLFQGSSDGVEVRYDLLDCHISICSPQVAQLFTDNFDYQTRDDFVRGLLVNEEILGNQIHMHVTAKEYGARVSNLHMYSAVCADVIRRWVYPLTPEANFTDSTTQSCTHSRHNIYRGPEVSLGHGSILEENVLLGSGTVIGSNCFITNSVIGPGCHIGDNVVLDQTYLWQGVRVAAGAQIHQSLLCDNAEVKERVTLKPRSVLTSQVVVGPNITLPEGSVISLHPPDAEEDEDDGEFSDDSGADQEKDKVKMKGYNPAEVGAAGKGYLWKAAGMNMEEEEELQQNLWGLKINMEEESESESEQSMDSEEPDSRGGSPQMDDIKVFQNEVLGTLQRGKEENISCDNLVLEINSLKYAYNVSLKEVMQVLSHVVLEFPLQQMDSPLDSSRYCALLLPLLKAWSPVFRNYIKRAADHLEALAAIEDFFLEHEALGISMAKVLMAFYQLEILAEETILSWFSQRDTTDKGQQLRKNQQLQRFIQWLKEAEEESSEDD

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Translation initiation factor eIF-2B subunit gamma
Molecular weight formula_weight	50304.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J,I

MEFQAVVMAVGGGSRMTDLTSSIPKPLLPVGNKPLIWYPLNLLERVGFEEVIVVTTRDVQKALCAEFKMKMKPDIVCIPDDADMGTADSLRYIYPKLKTDVLVLSCDLITDVALHEVVDLFRAYDASLAMLMRKGQDSIEPVPGQKGKKKAVEQRDFIGVDSTGKRLLFMANEADLDEELVIKGSILQKHPRIRFHTGLVDAHLYCLKKYIVDFLMENGSITSIRSELIPYLVRKQFSSASSQQGQEEKEEDLKKKELKSLDIYSFIKEANTLNLAPYDACWNACRGDRWEDLSRSQVRCYVHIMKEGLCSRVSTLGLYMEANRQVPKLLSALCPEEPPVHSSAQIVSKHLVGVDSLIGPETQIGEKSSIKRSVIGSSCLIKDRVTITNCLLMNSVTVEEGSNIQGSVICNNAVIEKGADIKDCLIGSGQRIEAKAKRVNEVIVGNDQLMEI

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	Translation initiation factor eIF-2B subunit alpha
Molecular weight formula_weight	33754.1 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H,G

MDDKELIEYFKSQMKEDPDMASAVAAIRTLLEFLKRDKGETIQGLRANLTSAIETLCGVDSSVAVSSGGELFLRFISLASLEYSDYSKCKKIMIERGELFLRRISLSRNKIADLCHTFIKDGATILTHAYSRVVLRVLEAAVAAKKRFSVYVTESQPDLSGKKMAKALCHLNVPVTVVLDAAVGYIMEKADLVIVGAEGVVENGGIINKIGTNQMAVCAKAQNKPFYVVAESFKFVRLFPLNQQDVPDKFKYKADTLKVAQTGQDLKEEHPWVDYTAPSLITLLFTDLGVLTPSAVSDELIKLYL

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	Translation initiation factor eIF-2B subunit beta
Molecular weight formula_weight	41008.6 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

MHHHHHHGGGSENLYFQSPGSAAKGSELSERIESFVETLKRGGGPRSSEEMARETLGLLRQIITDHRWSNAGELMELIRREGRRMTAAQPSETTVGNMVRRVLKIIREEYGRLHGRSDESDQQESLHKLLTSGGLNEDFSFHYAQLQSNIIEAINELLVELEGTMENIAAQALEHIHSNEVIMTIGFSRTVEAFLKEAARKRKFHVIVAECAPFCQGHEMAVNLSKAGIETTVMTDAAIFAVMSRVNKVIIGTKTILANGALRAVTGTHTLALAAKHHSTPLIVCAPMFKLSPQFPNEEDSFHKFVAPEEVLPFTEGDILEKVSVHCPVFDYVPPELITLFISNIGGNAPSYIYRLMSELYHPDDHVL

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 5 Entity 5 polymer

Description description	Translation initiation factor eIF-2B subunit delta
Molecular weight formula_weight	57640.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,E

MAAVAVAVREDSGSGMKAELPPGPGAVGREMTKEEKLQLRKEKKQQKKKRKEEKGAEPETGSAVSAAQCQVGPTRELPESGIQLGTPREKVPAGRSKAELRAERRAKQEAERALKQARKGEQGGPPPKASPSTAGETPSGVKRLPEYPQVDDLLLRRLVKKPERQQVPTRKDYGSKVSLFSHLPQYSRQNSLTQFMSIPSSVIHPAMVRLGLQYSQGLVSGSNARCIALLRALQQVIQDYTTPPNEELSRDLVNKLKPYMSFLTQCRPLSASMHNAIKFLNKEITSVGSSKREEEAKSELRAAIDRYVQEKIVLAAQAISRFAYQKISNGDVILVYGCSSLVSRILQEAWTEGRRFRVVVVDSRPWLEGRHTLRSLVHAGVPASYLLIPAASYVLPEVSKVLLGAHALLANGSVMSRVGTAQLALVARAHNVPVLVCCETYKFCERVQTDAFVSNELDDPDDLQCKRGEHVALANWQNHASLRLLNLVYDVTPPELVDLVITELGMIPCSSVPVVLRVKSSDQ

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 6 Entity 6 non-polymer

Description description	2-(4-chloranylphenoxy)-~{N}-[4-[2-(4-chloranylphenoxy)ethanoylamino]cyclohexyl]ethanamide
Molecular weight formula_weight	451.3 kDa
Source method src_method	syn
Copy count entity_count	1

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7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	6cajG01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	1070 — Translation initiation factor eIF-2B, N-terminal domain

Domain ID domain_id	6cajG02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10470 — Translation initiation factor eif-2b; domain 2

Domain ID domain_id	6cajH01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	1070 — Translation initiation factor eIF-2B, N-terminal domain

Domain ID domain_id	6cajH02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10470 — Translation initiation factor eif-2b; domain 2

▶

8. Citations (1)

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Resolution resolution	2.80 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	202125

fit	/app/data/saxs_computation/ca/6caj/6caj.fit
pddf	/app/data/pr_computation/ca/6caj/6caj.pr.out
profile	/app/data/saxs_computation/ca/6caj/6caj.dat

Electron cryo-microscopy of the eukaryotic translation initiation factor 2B from Homo sapiens

1. Protein Identity and Related Structures Protein Identity & Related Structures

Translation initiation factor eIF-2B subunit epsilon

State in the Current Structure

Other States of the Same Protein in the Database

Translation initiation factor eIF-2B subunit gamma

State in the Current Structure

Other States of the Same Protein in the Database

Translation initiation factor eIF-2B subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

Translation initiation factor eIF-2B subunit beta

State in the Current Structure

Other States of the Same Protein in the Database

Translation initiation factor eIF-2B subunit delta

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

来源 Source

Entity 3 Entity 3 polymer

Polymer Polymer

来源 Source

Entity 4 Entity 4 polymer

Polymer Polymer

来源 Source

Entity 5 Entity 5 polymer

Polymer Polymer

来源 Source

Entity 6 Entity 6 non-polymer

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)