Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1998-10-2
pubmed:abstractText
Rat brain contains a calpain activator specific for the mu-form of the proteinase. We now report that this protein factor binds to the catalytic 80 kDa calpain subunit, promoting the dissociation of the heterodimer structure of the proteinase. The successive steps of the activation process, namely the two autoproteolytic steps producing the 78 kDa and the 75 kDa calpain forms, result in a 100 times faster rate. The activator competes with calpastatin and associates with the inner surface of plasma membranes. Based on its properties, the calpain activator can be visualised as the molecule indicating the sites for calpain activation at which the proteinase can also elude the negative control exerted by calpastatin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
28
pubmed:volume
249
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
583-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Mechanism of action of a new component of the Ca(2+)-dependent proteolytic system in rat brain: the calpain activator.
pubmed:affiliation
Institute of Biological Chemistry, University of Genoa, Italy.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't