Wiktionary
n. (context enzyme English) Any of a family of enzymes that regulate calcium in the body
Wikipedia
A calpain (; , ) is a protein belonging to the family of calcium-dependent, non- lysosomal cysteine proteases ( proteolytic enzymes) expressed ubiquitously in mammals and many other organisms. Calpains constitute the C2 family of protease clan CA in the MEROPS database. The calpain proteolytic system includes the calpain proteases, the small regulatory subunit CAPNS1, also known as CAPN4, and the endogenous calpain-specific inhibitor, calpastatin.
Usage examples of "calpain".
And pyramidal neurons in the frontal cortex and hippocampus accumulated calpain, which meant they were vulnerable to calcium influxes, which damaged them.
Autopsies of people over two hundred who had died of the quick decline regularly showed serious calcification of the pineal gland, coupled with increases in calpain levels in the hippocampus.
And the hippocampus and calpain levels generally were both implicated in some of the leading current models of how the memory worked.