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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：Q13765 New Search
25PDB entries
26Biological assembly
28chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
28LN XBP1u-stalled RPL4 RNC in complex with NAC Deposited 2026-02-05 Assembly 1 Protein–RNA Heteromer；Protein × 80 PDB declaration: 86-meric（86） Consistent with all polymers
Chain Bu 1–215（215 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 2.70 Å
3LKX Human nac dimerization domain Deposited 2010-01-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 84–136（53 aa） Fragment：UNP residues 84-136
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；285 K；PEG 6000, Sodium citrate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 285K
Resolution 2.50 Å R-free 0.253
3MCB Crystal structure of NAC domains of human nascent polypeptide-associated complex (NAC) Deposited 2010-03-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 79–132（54 aa） Fragment：NAC domain (UNP RESIDUES 79-132)
Not recorded IOD IODIDE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.6；289 K；0.1M sodium citrate (pH 5.6), 0.1 M NaCl, 12% (w/v) PEG 4000, VAPOR DIFFUSION, temperature 289K
Resolution 1.90 Å R-free 0.247
3MCE Crystal structure of the NAC domain of alpha subunit of nascent polypeptide-associated complex(NAC) Deposited 2010-03-29 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 81–133（53 aa） Fragment：NAC domain (UNP RESIDUES 81-133)
Chain B 81–133（53 aa） Fragment：NAC domain (UNP RESIDUES 81-133)
Not recorded IOD IODIDE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.3；289 K；0.2M potassium citrate tribasic monohydrate (pH 8.3), 20% (w/v) PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 2.40 Å R-free 0.277
3MCE Crystal structure of the NAC domain of alpha subunit of nascent polypeptide-associated complex(NAC) Deposited 2010-03-29 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 81–133（53 aa） Fragment：NAC domain (UNP RESIDUES 81-133)
Chain D 81–133（53 aa） Fragment：NAC domain (UNP RESIDUES 81-133)
Not recorded IOD IODIDE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.3；289 K；0.2M potassium citrate tribasic monohydrate (pH 8.3), 20% (w/v) PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 2.40 Å R-free 0.277
7QWQ Ternary complex of ribosome nascent chain with SRP and NAC Deposited 2022-01-25 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 52-meric（52） Consistent with all polymers
Chain t 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 97 ZN ZINC ION × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.83 Å
7QWR Structure of the ribosome-nascent chain containing an ER signal sequence in complex with NAC Deposited 2022-01-25 Assembly 1 Protein–RNA Heteromer；Protein × 45 PDB declaration: 48-meric（48） Consistent with all polymers
Chain t 1–215（215 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 97 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.90 Å
7QWS Structure of ribosome translating beta-tubulin in complex with TTC5 and NAC Deposited 2022-01-25 Assembly 1 Protein–RNA Heteromer；Protein × 46 PDB declaration: 49-meric（49） Consistent with all polymers
Chain t 1–215（215 aa）
Not recorded ZN ZINC ION × 5 MG MAGNESIUM ION × 97 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.40 Å
8P2K Ternary complex of translating ribosome, NAC and METAP1 Deposited 2023-05-16 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain Na 1–215（215 aa）
Not recorded N ANY 5'-MONOPHOSPHATE NUCLEOTIDE × 73 SPD SPERMIDINE × 30 SPM SPERMINE × 3 MG MAGNESIUM ION × 420 UNX UNKNOWN LIGAND × 312 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 AAC ACETYLAMINO-ACETIC ACID × 1 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.90 Å
9F1B Mammalian ternary complex of a translating 80S ribosome, NAC and NatA/E Deposited 2024-04-18 Assembly 1 Insufficient information Heteromer；Protein × 83 PDB declaration: 89-meric（89） Consistent with all polymers
Chain Ct 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 420 ZN ZINC ION × 8 UNX UNKNOWN LIGAND × 306 IHP INOSITOL HEXAKISPHOSPHATE × 1 SPD SPERMIDINE × 30 SPM SPERMINE × 3 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.01 Å
9F1C Mammalian quaternary complex of a translating 80S ribosome, NAC, MetAP1 and NatA/E Deposited 2024-04-18 Assembly 1 Insufficient information Heteromer；Protein × 84 PDB declaration: 90-meric（90） Consistent with all polymers
Chain Ct 1–215（215 aa）
Not recorded UNX UNKNOWN LIGAND × 277 MG MAGNESIUM ION × 420 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 SPD SPERMIDINE × 30 SPM SPERMINE × 3 ZN ZINC ION × 8 IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.78 Å
9F1D Mammalian quaternary complex of a translating 80S ribosome, NAC, MetAP1 and NatA/E-HYPK Deposited 2024-04-18 Assembly 1 Protein–RNA Heteromer；Protein × 85 PDB declaration: 91-meric（91） Consistent with all polymers
Chain Ct 1–215（215 aa）
Not recorded UNX UNKNOWN LIGAND × 295 SPD SPERMIDINE × 30 MG MAGNESIUM ION × 420 SPM SPERMINE × 3 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 IHP INOSITOL HEXAKISPHOSPHATE × 1 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.26 Å
9FQ0 Human NatA-NAC-MAP1 80S ribosome complex Deposited 2024-06-14 Assembly 1 Protein–RNA Heteromer；Protein × 14 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain A 1–215（215 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.67 Å
9I2D NMT1-NAC bound human RNC with 10 amino acid ARF1-linker Deposited 2025-01-20 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.19 Å
9I2E NMT1-NAC bound human ribosome (combined translational states) Deposited 2025-01-20 Assembly 1 Protein–RNA Heteromer；Protein × 81 PDB declaration: 86-meric（86） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 256 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.95 Å
9MR4 NAC: Ribosome nascent chain complex(Oxa1L) Deposited 2025-01-06 Assembly 1 Protein–RNA Heteromer；Protein × 78 PDB declaration: 84-meric（84） Consistent with all polymers
Chain EG 1–215（215 aa）
Not recorded ZN ZINC ION × 6 MG MAGNESIUM ION × 285 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.65 Å
9NDP Structure of stalled ribosome and nascent chain in complex with NMT2 and NAC Deposited 2025-02-18 Assembly 1 Insufficient information Heteromer；Protein × 81 PDB declaration: 87-meric（87） Consistent with all polymers
Chain EG 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 296 ZN ZINC ION × 6 COA COENZYME A × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.82 Å
9QLO NMT1-NAC bound human RNC with full length ARF1 - State 1 Deposited 2025-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 G3D GUANOSINE-3'-MONOPHOSPHATE-5'-DIPHOSPHATE × 1 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.47 Å
9QLP NMT1-NAC bound human RNC with full length ARF1 - State 2 Deposited 2025-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 G3D GUANOSINE-3'-MONOPHOSPHATE-5'-DIPHOSPHATE × 1 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.75 Å
9QLQ NMT1-NAC bound human RNC with full length ARF1 - alternative State Deposited 2025-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.57 Å
9QQA Ternary complex of translating ribosome, NAC and NMT1 Deposited 2025-03-31 Assembly 1 Protein–RNA Heteromer；Protein × 81 PDB declaration: 86-meric（86） Consistent with all polymers
Chain Nt 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 407 UNX UNKNOWN LIGAND × 187 SPD SPERMIDINE × 30 SPM SPERMINE × 3 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.80 Å
9QQB Quaternary complex of a translating ribosome, NAC, NMT1, and NatA Deposited 2025-03-31 Assembly 1 Protein–RNA Heteromer；Protein × 84 PDB declaration: 89-meric（89） Consistent with all polymers
Chain Nt 1–215（215 aa）
Not recorded SPD SPERMIDINE × 30 SPM SPERMINE × 3 MG MAGNESIUM ION × 412 UNX UNKNOWN LIGAND × 168 ZN ZINC ION × 8 IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.43 Å
9S3B NMT1-NAC bound human RNC with 58 amino acid ARF1-linker - State 1 Deposited 2025-07-24 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.38 Å
9S3C NMT1-NAC bound human RNC with 58 amino acid ARF1-linker - State 2 Deposited 2025-07-24 Assembly 1 Protein–RNA Heteromer；Protein × 82 PDB declaration: 88-meric（88） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.42 Å
9S3D NAC bound human RNC with 58 amino acid ARF1-linker Deposited 2025-07-24 Assembly 1 Protein–RNA Heteromer；Protein × 81 PDB declaration: 87-meric（87） Consistent with all polymers
Chain NA 1–215（215 aa）
Not recorded MG MAGNESIUM ION × 191 ZN ZINC ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.32 Å
9SYR Human quaternary complex of a translating 80S ribosome, NAC, MetAP1 and NatD Deposited 2025-10-13 Assembly 1 Insufficient information Heteromer；Protein × 80 PDB declaration: 86-meric（86） Consistent with all polymers
Chain Na 1–215（215 aa）
Not recorded ZN ZINC ION × 10 COA COENZYME A × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.55 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.