This gene encodes a brain-specific member of the copine family, which is composed of calcium-dependent membrane-binding proteins. The gene product contains two N-terminal C2 domains, and one von Willebrand factor A domain. It may have a role in synaptic plasticity.
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Caudell EG, Caudell JJ, Tang CH, et al. (2000). "Characterization of human copine III as a phosphoprotein with associated kinase activity". Biochemistry39 (42): 13034–43. doi:10.1021/bi001250v. PMID11041869.