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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：Q07009 New Search
6PDB 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
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 A 1–700（700 aa） Fragment：LARGE (CATALYTIC) SUBUNIT
Mutation：C105S 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
1MDW Crystal Structure of Calcium-Bound Protease Core of Calpain II Reveals the Basis for Intrinsic Inactivation Deposited 2002-08-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 19–346（328 aa） Fragment：Protease Core Domains I and II (Residues 17-346)
Mutation：C105S CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；10% PEG6000, 0.1M Sodium Acetate, 30mM calcium chloride, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.95 Å R-free 0.243
1MDW Crystal Structure of Calcium-Bound Protease Core of Calpain II Reveals the Basis for Intrinsic Inactivation Deposited 2002-08-07 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 19–346（328 aa） Fragment：Protease Core Domains I and II (Residues 17-346)
Mutation：C105S CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；10% PEG6000, 0.1M Sodium Acetate, 30mM calcium chloride, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.95 Å R-free 0.243
1QXP Crystal Structure of a mu-like calpain Deposited 2003-09-08 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–49（49 aa）
Chain A 636–700（65 aa）
Mutation：C105S Mutation：C105S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.25；295 K；PEG 6000,morpholino ethane sulfonic acid, sodium chloride, n-nonyl-beta-D-maltoside , pH 6.25, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.80 Å R-free 0.311
1QXP Crystal Structure of a mu-like calpain Deposited 2003-09-08 Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–49（49 aa）
Chain B 636–700（65 aa）
Mutation：C105S Mutation：C105S No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.25；295 K；PEG 6000,morpholino ethane sulfonic acid, sodium chloride, n-nonyl-beta-D-maltoside , pH 6.25, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.80 Å R-free 0.311
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 A 1–700（700 aa）
Mutation：K10T, C105S 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 A 1–700（700 aa）
Mutation：C105S 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 A 1–700（700 aa）
Mutation：C105S 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.