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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：Q9FDF2 New Search
3PDB entries
3Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
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
4GI3 Crystal structure of Greglin in complex with subtilisin Deposited 2012-08-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 37–310（274 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；0.68M sodium citrate, 0.36M sodium formate, 0.066M Tris, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.75 Å R-free 0.201
4HX2 Crystal structure of Streptomyces caespitosus sermetstatin in complex with Bacillus licheniformis subtilisin Deposited 2012-11-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 37–310（274 aa） Fragment：Mature protease
Chain C 37–310（274 aa） Fragment：Mature protease
Not recorded CA CALCIUM ION × 4 ZN ZINC ION × 2 CL CHLORIDE ION × 1 1AX (2R,2'R)-3,3'-oxydipropane-1,2-diol × 1 PO4 PHOSPHATE ION × 1 GOL GLYCEROL × 2 IPA ISOPROPYL ALCOHOL × 3 K POTASSIUM ION × 2 CAC CACODYLATE ION × 1 ACT ACETATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；0.1 M cacodylate, 0.2 M zinc acetate dihydrate, 10% (v/v) 2-propanol, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.25 Å R-free 0.217
6DWQ Subtilisin serine protease modified with the protease inhibitor cyanobenzylsulfonylfluoride Deposited 2018-06-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 37–310（274 aa） Fragment：residues 37-310
Non-standard monomer：Yes (specific site not provided by mmCIF) EDO 1,2-ETHANEDIOL × 12 NO3 NITRATE ION × 2 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298 K；26% PEG 3350, 0.350 M NH4NO3
Resolution 1.27 Å R-free 0.148

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.