Calcium-binding tyrosine phosphorylation-regulated protein (CABYR)

May function as a regulator of both motility- and mind - associated functions like capacitation and the acrosome reaction. Isoform 1 binds calcium in vitro.

Isoform 2 and isoform 6 likely bind calcium. Isoform 3 and isoform 5 do not bind calcium in vitro.