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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：A4IJK8 New Search
10PDB entries
10Biological assembly
10chain/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
5EUL Structure of the SecA-SecY complex with a translocating polypeptide substrate Deposited 2015-11-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain Y 1–430（430 aa）
Not recorded MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 TBR HEXATANTALUM DODECABROMIDE × 18 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；295 K；21-24% polyethylene glycol 1500, 100mM Tris-HCl pH8.5, 50-100 mM MgAc2, 2% 2-methyl-2,4-pentandiol
Resolution 3.70 Å R-free 0.315
6ITC Structure of a substrate engaged SecA-SecY protein translocation machine Deposited 2018-11-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C,Q202T,L210G,F211G,R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.45 Å
7XHA Structure of the SecA/SecYE/proOmpA(4Y)-sfGFP complex with ADP.BeF3-. Deposited 2022-04-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.35 Å
7XHB Structure of the SecA/SecYE/proOmpA(4Y)-sfGFP complex with ADP Deposited 2022-04-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C MG MAGNESIUM ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.33 Å
8Y9Y Structure of the SecA-SecY complex with the substrate FtsQ-LacY(+1C) Deposited 2024-02-07 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C, Q202T, F211T, R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.29 Å
8Y9Z Structure of the SecA-SecY complex with the substrate HmBRI-3TM Deposited 2024-02-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C, Q202T, F211T, R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.41 Å
8YA0 Structure of the SecA-SecY complex with the substrate FtsQ-LacY(+7C) Deposited 2024-02-07 Assembly 1 Insufficient information Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain Y 2–430（429 aa）
Mutation：G60C, Q202T, F211T, R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å
8YA2 Structure of the SecA-SecY complex with the substrate FtsQ-LacY(+20C) Deposited 2024-02-07 Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C, Q202T, F211T, R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.84 Å
8YA3 Structure of the SecA-SecY complex with the substrate FtsQ-LacY(+7C) treated with DTT Deposited 2024-02-07 Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C, Q202T, F211T, R213N No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.27 Å
8YAS Structure of the SecA-SecY complex with the substrate HmBRI-7TM Deposited 2024-02-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain Y 1–430（430 aa）
Mutation：G60C, Q202T, F211T, R213N MG MAGNESIUM ION × 1 BEF BERYLLIUM TRIFLUORIDE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.97 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.