Calreticulin

Calreticulin is a proteinthat binds Ca²⁺ions(a second messengermoleculein signal transduction), rendering it inactive. The Ca²⁺ is bound with low affinity, but high capacity, and can be released on a signal (see inositol triphosphate). Calreticulin is located in storage compartments associated with the endoplasmic reticulum.

Calreticulin is also known as calregulin, CRP55, CaBP3, calsequestrin-like protein and Ro/SS-A antigen.

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It uses material from the http://en.wikipedia.org/wiki/Calreticulin Wikipedia article Calreticulin.