Calpain Small Subunit 1 (CAPNS1) Antibody – Rabbit Polyclonal

This gene is a member of the calpain small subunit family. Calpains are calcium-dependent cysteine proteinases that are widely distributed in mammalian cells. Calpains operate as heterodimers, comprising a specific large catalytic subunit (calpain 1 subunit in Calpain I, and calpain 2 subunit in Calpain II), and a common small regulatory subunit encoded by this gene. This encoded protein is essential for the stability and function of both calpain heterodimers, whose proteolytic activities influence various cellular functions including apoptosis, proliferation, migration, adhesion, and autophagy. Calpains have been implicated in neurodegenerative processes, such as myotonic dystrophy. A pseudogene of this gene has been defined on chromosome 1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2014]

CAPNS1: Regulatory subunit of the calcium-regulated non- lysosomal thiol-protease which catalyzes limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction.

Protein type: Protease; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 19q13.12

Cellular Component: cytosol; membrane; plasma membrane

Molecular Function: calcium ion binding; calcium-dependent cysteine-type endopeptidase activity; protein binding

Biological Process: extracellular matrix disassembly; extracellular matrix organization and biogenesis; positive regulation of cell proliferation; proteolysis