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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：P0AG99 New Search
5PDB entries
5Biological assembly
5chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion 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
3J45 Structure of a non-translocating SecY protein channel with the 70S ribosome Deposited 2013-06-18 Assembly 1 Protein–RNA Heteromer；Protein × 6 PDB declaration: undecameric（11） Consistent with all polymers
Chain G 9–73（65 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 50 mM HEPES-KOH, 100 mM KOAc, 10 mM Mg(OAc)2, 0.05% DDM；pH 7.5；50 mM HEPES-KOH, 100 mM KOAc, 10 mM Mg(OAc)2, 0.05% DDM
cryo-EM vitrification conditions 90 K；Cryogen ETHANE；Blot 1 second before plunging into liquid ethane (HOMEMADE PLUNGER).
Resolution 9.50 Å
3J46 Structure of the SecY protein translocation channel in action Deposited 2013-06-18 Assembly 1 Protein–RNA Heteromer；Protein × 8 PDB declaration: tetradecameric（14） Consistent with all polymers
Chain G 9–73（65 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 50 mM Tris-acetate, 10 mM Mg(OAc)2, 80 mM KOAc, 0.06% DDM；pH 7.2；50 mM Tris-acetate, 10 mM Mg(OAc)2, 80 mM KOAc, 0.06% DDM
cryo-EM vitrification conditions 77 K；Cryogen ETHANE；Blot 1-2 seconds before plunging into liquid ethane (FEI VITROBOT MARK III).
Resolution 10.10 Å
5MG3 EM fitted model of bacterial holo-translocon Deposited 2016-11-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain G 1–110（110 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 14.00 Å
5NCO Quaternary complex between SRP, SR, and SecYEG bound to the translating ribosome Deposited 2017-03-06 Assembly 1 Protein–RNA Heteromer；Protein × 36 PDB declaration: 40-meric（40） Consistent with all polymers
Chain j 1–71（71 aa）
Not recorded ZN ZINC ION × 1 ALF TETRAFLUOROALUMINATE ION × 2 MG MAGNESIUM ION × 2 GDP GUANOSINE-5'-DIPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.80 Å
9RBF Structure of a stalled E. coli 70S RNC-NuoK-86 in complex with the membrane protein insertase SecYEG-YidC Deposited 2025-05-22 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 61-meric（61） Consistent with all polymers
Chain 8 1–110（110 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 2.44 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.