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CAPN1 - calpain 1, (mu/I) large subunit
Entrez Gene Name: calpain 1, (mu/I) large subunit
Synonyms: CALCIUM ACTIVATED NEUTRAL PROTEASE, CALPAIN I, CALPAIN1, CANP, CANP1, CANPL1, Capa-1, CAPN1, MU CALPAIN, MU-CALPIN, muCANP, muCL

Gene Summary

  • Human (823): The calpains, calcium-activated neutral proteases, are nonlysosomal, intracellular cysteine proteases. The mammalian calpains include ubiquitous, stomach-specific, and muscle-specific proteins. The ubiquitous enzymes consist of heterodimers with distinct large, catalytic subunits associated with a common small, regulatory subunit. This gene encodes the large subunit of the ubiquitous enzyme, calpain 1. [provided by RefSeq]
  • Rat (29153): calcium-dependent protease that may be involved in experimental allergic encephalomyelitis (EAE) [RGD]

Cell Regulation

Regulates:
  • HTT
  • CASP12 (includes EG:12364)
  • CASP3
View all 122 in IPA
Regulated by:
  • Ca2+
  • CAST
  • calcium
View all 89 in IPA
Binds:
  • SLC8A3
  • CLEC4G
  • C11ORF59
View all 18 in IPA
Role in cell:
  • apoptosis
  • migration
  • cleavage in
View all 26 in IPA
Disease:
  • Huntington's disease
  • Alzheimer's disease
  • brain ischemia
View all 7 in IPA

Biological Process

positive regulation of cell proliferation, protein autoprocessing, proteolysis

Cellular Components

cytoplasm, insoluble fraction, intracellular, membrane, plasma membrane

Literature References

  • 14556717Yuan J, Lipinski M, Degterev A. Diversity in the mechanisms of neuronal cell death.Neuron 2003 Oct 09;40(2):401-13
  • 17332428Galvez AS, Diwan A, Odley AM, Hahn HS, Osinska H, Melendez JG, Robbins J, Lynch RA, Marreez Y, Dorn GW. Cardiomyocyte degeneration with calpain deficiency reveals a critical role in protein homeostasis.Circ Res 2007 Apr 13;100(7):1071-8
  • 17192410Nuzzi PA, Senetar MA, Huttenlocher A. Asymmetric Localization of Calpain 2 during Neutrophil Chemotaxis.Mol Biol Cell 2007 Mar 01;18(3):795-805
  • View 771 categorized literature findings and their references in IPA

Molecular Functions

calcium ion binding, calcium-dependent cysteine-type endopeptidase activity, cysteine-type endopeptidase activity, cysteine-type peptidase activity, cytoskeletal protein binding, hydrolase activity, peptidase activity, protein binding

Protein Domains

calcium ion binding, Calpain, calpain domain III, cytoskeletal protein binding, EF-Hand, N-terminal domain, peptidase, protein binding

Subcellular Locations

cell body, cellular membrane, cytoplasm, cytosolic fraction, Golgi apparatus, mitochondria, mitochondrial intermembrane space, neurites, plasma membrane