Function and Biology

Crystal structure of caspase-3 with inhibitor Ac-VD(Orn)VD-CHO

Source organisms:
Biochemical function: cysteine-type peptidase activity
Biological process: proteolysis
Cellular component: not assigned

EC 3.4.22.56: Caspase-3

Reaction catalysed:
Strict requirement for an Asp residue at positions P1 and P4. It has a preferred cleavage sequence of Asp-Xaa-Xaa-Asp-|- with a hydrophobic amino-acid residue at P2 and a hydrophilic amino-acid residue at P3, although Val or Ala are also accepted at this position
Systematic name:
-
Alternative Name(s):
  • Apopain
  • CASP-3
  • CPP32
  • Yama protein

GO terms

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

Sequence family

Pfam Protein family (Pfam)
PF00656
Domain description: Caspase domain
Occurring in:
  1. Caspase-3 subunit p17
  2. Caspase-3 subunit p12
The deposited structure of PDB entry 7rn8 contains 2 copies of Pfam domain PF00656 (Caspase domain) in Caspase-3 subunit p17. Showing 1 copy in chain A.
The deposited structure of PDB entry 7rn8 contains 2 copies of Pfam domain PF00656 (Caspase domain) in Caspase-3 subunit p12. Showing 1 copy in chain B.

InterPro InterPro annotations
IPR015917
Domain description: Peptidase C14A, caspase catalytic domain
Occurring in:
  1. Caspase-3 subunit p17
  2. Caspase-3 subunit p12
IPR011600
Domain description: Peptidase C14, caspase domain
Occurring in:
  1. Caspase-3 subunit p17
  2. Caspase-3 subunit p12
IPR029030
Domain description: Caspase-like domain superfamily
Occurring in:
  1. Caspase-3 subunit p17
  2. Caspase-3 subunit p12
IPR002138
Domain description: Peptidase C14, caspase non-catalytic subunit p10
Occurring in:
  1. Caspase-3 subunit p12
IPR033139
Domain description: Peptidase family C14A, cysteine active site
Occurring in:
  1. Caspase-3 subunit p17
IPR016129
Domain description: Peptidase family C14A, His active site
Occurring in:
  1. Caspase-3 subunit p17
IPR001309
Domain description: Peptidase C14, p20 domain
Occurring in:
  1. Caspase-3 subunit p17
IPR002398
Domain description: Peptidase C14 family
Occurring in:
  1. Caspase-3 subunit p17