Calpastatin

Calpastatin is a protein that in humans is encoded by the CAST gene.[5][6][7][8]

CAST
Identifiers
Aliases	CAST, BS-17, PLACK, calpastatin
External IDs	OMIM: 114090 MGI: 1098236 HomoloGene: 7658 GeneCards: CAST
Gene location (Human) Chr. Chromosome 5 (human)[1] Band 5q15 Start 96,525,267 bp[1] End 96,779,595 bp[1]
Gene location (Mouse) Chr. Chromosome 13 (mouse)[2] Band 13|13 C1 Start 74,692,368 bp[2] End 74,808,810 bp[2]
RNA expression pattern More reference expression data
Gene ontology Molecular function • peptidase inhibitor activity • cysteine-type endopeptidase inhibitor activity • GO:0001948 protein binding • endopeptidase inhibitor activity • RNA binding • cadherin binding • calcium-dependent cysteine-type endopeptidase inhibitor activity • protease binding Cellular component • endoplasmic reticulum • membrane • cytosol Biological process • negative regulation of peptidase activity • negative regulation of type B pancreatic cell apoptotic process • inhibition of cysteine-type endopeptidase activity • presynaptic active zone organization Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	831	12380
Ensembl	ENSG00000153113	ENSMUSG00000021585
UniProt	P20810	P51125
RefSeq (mRNA)	NM_001042440 NM_001042441 NM_001042442 NM_001042443 NM_001042444 NM_001042445 NM_001042446 NM_001190442 NM_001284212 NM_001284213 NM_001750 NM_173060 NM_173061 NM_173062 NM_173063 NM_001330626 NM_001330627 NM_001330628 NM_001330629 NM_001330630 NM_001330631 NM_001330632 NM_001330633 NM_001330634 NM_001375317	NM_001301153 NM_001301155 NM_001301156 NM_001301157 NM_001301158 NM_001301160 NM_001301181 NM_009817
RefSeq (protein)	NP_001035905 NP_001035906 NP_001035907 NP_001035908 NP_001035909 NP_001035910 NP_001035911 NP_001177371 NP_001271141 NP_001271142 NP_001317555 NP_001317556 NP_001317557 NP_001317558 NP_001317559 NP_001317560 NP_001317561 NP_001317562 NP_001317563 NP_001741 NP_775083 NP_001362246	NP_001288082 NP_001288084 NP_001288085 NP_001288086 NP_001288087 NP_001288089 NP_001288110 NP_033947
Location (UCSC)	Chr 5: 96.53 – 96.78 Mb	Chr 13: 74.69 – 74.81 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

The protein encoded by this gene is an endogenous calpain (calcium-dependent cysteine protease) inhibitor. It consists of an N-terminal domain L and four repetitive calpain-inhibition domains (domains 1–4), and it is involved in the proteolysis of amyloid precursor protein. The calpain/calpastatin system is involved in numerous membrane fusion events, such as neural vesicle exocytosis and platelet and red-cell aggregation. The encoded protein is also thought to affect the expression levels of genes encoding structural or regulatory proteins. Several alternatively spliced transcript variants of this gene have been described, but the full-length natures of only some have been determined.[8]