PDBe 1qxp

X-ray diffraction
2.8Å resolution

Crystal Structure of a mu-like calpain


Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Calpain small subunit 1; Calpain-2 catalytic subunit; Calpain-1 catalytic subunit Chains: A, B
Molecule details ›
Chains: A, B
Length: 900 amino acids
Theoretical weight: 103.51 KDa
Source organism: Rattus norvegicus
Expression system: Escherichia coli
  • Best match: Q07009 (Residues: 1-49, 639-700)
  • Best match: P97571 (Residues: 60-650)
  • Best match: Q64537 (Residues: 88-270)
Gene names: Capn1, Capn2, Capn4, Capns1, Cls1, Css1

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE F1
Spacegroup: P21
Unit cell:
a: 72.738Å b: 184.596Å c: 86.37Å
α: 90° β: 100.74° γ: 90°
R R work R free
0.233 0.229 0.311
Expression system: Escherichia coli