Calpains

Calpains are a group of calcium-sensitive cysteine proteases that are ubiquitously expressed in mammals. This family contains 14 members, with μ-calpain (calpain 1) and m-calpain (calpain 2) being the most well-characterized. Structurally, calpains contain two subunits; an 80 kDa catalytic subunit and a 28 kDa regulatory subunit that functions as a chaperone to stabilize the 80 kDa structure.

Calpains are regulated by Ca²⁺ concentration, phosphorylation, calpastatin and probably by altering their subcellular localization (limiting access to substrate). These endopeptidases have numerous functions including, but not limited to, remodeling of cytoskeletal attachments to the plasma membrane during cell fusion and cell motility, proteolytic modification of molecules in signal transduction pathways, degradation of enzymes controlling progression through the cell cycle, regulation of gene expression, substrate degradation in some apoptotic pathways, and an involvement in long-term potentiation.

Perturbations in calpain activity have been associated in pathophysiological processes contributing to type II diabetes (calpain 10), Alzheimer's disease (calpain 1), gastric cancer (calpain 9) and muscular dystrophy (calpain 3).

External sources of pharmacological information for Calpains :

• BJP Guide

Literature for Calpains

Tocris offers the following scientific literature for Calpains to showcase our products. We invite you to request* your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

Cell Cycle and DNA Damage Research Product Guide

This product guide provides a review of the cell cycle and DNA damage research area and lists over 170 products, including research tools for:

• Cell Cycle and Mitosis
• DNA Damage Repair
• Targeted Protein Degradation
• Ubiquitin Proteasome Pathway
• Chemotherapy Targets

• Request copy
• Request PDF
• View all Product Guides & Listings

Pathways for Calpains

Apoptosis Signaling Pathway

Apoptosis is a physiological process for cell death that is critical during aging and development. It may also be referred to as cell 'suicide'. Apoptosis can be triggered by events both inside and outside of the cell.

• View Pathway
• Download PDF
• View all Pathways

Calpain Gene Data