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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：Q64537 New Search
7PDB entries
8Biological assembly
10chain/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
1AJ5 CALPAIN DOMAIN VI APO Deposited 1997-05-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 12–184（173 aa） Fragment：SMALL REGULATORY SUBUNIT, DOMAIN VI, MET 87 - SER 270
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.8；38%SATURATED AMMONIUM SULFATE AND 25MM PIPES BUFFER, PH 6.8
Resolution 2.30 Å R-free 0.306
1AJ5 CALPAIN DOMAIN VI APO Deposited 1997-05-15 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 12–184（173 aa） Fragment：SMALL REGULATORY SUBUNIT, DOMAIN VI, MET 87 - SER 270
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.8；38%SATURATED AMMONIUM SULFATE AND 25MM PIPES BUFFER, PH 6.8
Resolution 2.30 Å R-free 0.306
1DF0 Crystal structure of M-Calpain Deposited 1999-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–184（184 aa） Fragment：DOMAIN VI (CALCIUM-BINDING DOMAIN), SMALL (REGULATORY) SUBUNIT
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.25；298 K；PEG 6000, MES, SODIUM CHLORIDE, DITHIOTHREITOL, EDTA, pH 6.25, VAPOR DIFFUSION, HANGING DROP
Resolution 2.60 Å R-free 0.293
1DVI CALPAIN DOMAIN VI WITH CALCIUM BOUND Deposited 1997-05-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–184（184 aa） Fragment：SMALL (REGULATORY) SUBUNIT, DOMAIN VI, RESIDUES 87 - 270
Chain B 1–184（184 aa） Fragment：SMALL (REGULATORY) SUBUNIT, DOMAIN VI, RESIDUES 87 - 270
Not recorded CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；17% PEG 8K, 50MM CACODYLATE PH. 6.5 , 10% GLYCEROL, 200MM CACL2
Resolution 2.30 Å R-free 0.294
1NP8 18-k C-terminally trunucated small subunit of calpain Deposited 2003-01-17 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 87–245（159 aa） Fragment：residues 87-245
Chain B 87–245（159 aa） Fragment：residues 87-245
Not recorded CD CADMIUM ION × 13 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；294 K；PEG, cadmium chloride, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Resolution 2.00 Å R-free 0.239
1U5I Crystal Structure analysis of rat m-calpain mutant Lys10 Thr Deposited 2004-07-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 84–266（183 aa） Fragment：residues 1-184
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.6；298 K；PEG 6000, MES, sodium chloride, pH 7.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.86 Å R-free 0.283
3BOW Structure of M-calpain in complex with Calpastatin Deposited 2007-12-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 88–270（183 aa） Fragment：UNP residues 88-270
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；298 K；pH 6.5, microbatch under paraffin oil, temperature 298K
Resolution 2.40 Å R-free 0.258
3DF0 Calcium-dependent complex between m-calpain and calpastatin Deposited 2008-06-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 87–270（184 aa） Fragment：UNP residues 87-270
Not recorded CA CALCIUM ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；4-9% PEG 3350, 5-10 mM CaCl2, 50-100 mM NaOAc (pH 5.5) , VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Resolution 2.95 Å R-free 0.299

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.