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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：P0ABV6 New Search
9PDB entries
9Biological assembly
17chain/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
5BY4 Structure and function of the Escherichia coli Tol-Pal stator protein TolR Deposited 2015-06-10 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 36–142（107 aa） Fragment：UNP RESIDUES 36-142
Not recorded NA SODIUM ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.1 M Hepes buffer pH 7.5, 1.0 M sodium phosphate and 0.8 M potassium phosphate
Resolution 1.70 Å R-free 0.215
8ODT Structure of TolQR complex from E.coli Deposited 2023-03-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 10 Blot time 3 sec Wait time 2 sec
Resolution 4.20 Å
9K49 Cryo-EM structure of inner membrane TolQRA complex in CYMAL-6-Neopentyl Glycol detergent micelles Deposited 2024-10-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；Phosphate-buffered saline (PBS) buffer at pH 7.5 (20 mM PBS pH 7.5, 300 mM NaCl) with 20 mM Imidazole and 0.04 mM CYMAL-6 Neopentyl Glycol detergent
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
9KCH Cryo-EM structure of inner membrane TolQRA complex in CYMAL-6-Neopentyl Glycol detergent micelles Deposited 2024-11-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；Phosphate-buffered saline (PBS) buffer at pH 7.5 (20 mM PBS pH 7.5, 300 mM NaCl) with 20 mM Imidazole and 0.04 mM CYMAL-6 Neopentyl Glycol detergent
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.19 Å
9KPZ Structure of TolQRA complex at pH 5.4 from E.coli Deposited 2024-11-24 Assembly 1 Insufficient information Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 5.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.18 Å
9KQ0 Structure of TolQRA complex at pH 8.0 from E.coli Deposited 2024-11-24 Assembly 1 Insufficient information Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
9O40 cryo-EM structure of TolQR conformation1 in SMA nanodiscs Deposited 2025-04-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.92 Å
9QUQ cryo-EM structure of TolQR conformation2 in SMA nanodiscs Deposited 2025-04-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.28 Å
9QVD cryo-EM structure of TolQRA in nanodiscs Deposited 2025-04-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain F 1–142（142 aa）
Chain G 1–142（142 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.52 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.