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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：P17315 New Search
3PDB entries
3Biological assembly
3chain/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
2HDF Crystal structure of the Colicin I receptor Cir from E.coli Deposited 2006-06-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 26–663（638 aa） Fragment：Colicin I receptor
Mutation：W338M, L343M, F589M, V591M Non-standard monomer：Yes (specific site not provided by mmCIF) SR STRONTIUM ION × 1 OES N-OCTYL-2-HYDROXYETHYL SULFOXIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；7-8 G/L PROTEIN IN 0.02M TRIS PH7.5, 0.001M EDTA, 0.3M NACL, 1% N-OCTYL-2-HYDROXYETHYL SULFOXIDE MIXED AT 1:1 RATIO WITH 0.1M TRIS PH7.5, 0.02-0.05M SRCL2, 5% ISOPROPANOL, 32-40 % PEG 2000 MME, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 2.65 Å R-free 0.291
2HDI Crystal structure of the Colicin I receptor Cir from E.coli in complex with receptor binding domain of Colicin Ia. Deposited 2006-06-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 26–663（638 aa） Fragment：Colicin I receptor
Mutation：W338M, L343M, F589M, V591M LDA LAURYL DIMETHYLAMINE-N-OXIDE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.2；294 K；9 G/L PROTEIN IN 0.02M TRIS PH7.5, 0.2M NACL, 0.05% LDAO, 0.45% C8E4, 3% HEPTANETRIOL MIXED AT 1:1 RATIO WITH 0.1M MES PH6.2, 10% GLYCEROL, 22% PEG 2000 MME, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 2.50 Å R-free 0.249
9NN6 E. coli Cir in Complex with the RBD of Microcin V Deposited 2025-03-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 32–663（632 aa）
Mutation：W307M, L312M, F558M, V560M No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Phosphate Buffered Saline
cryo-EM vitrification conditions Cryogen ETHANE；Blot force +5 Wait time 0 Blot total 1 Blot time 5 seconds
Resolution 2.90 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.