CABYR Polyclonal Antibody

function:May function as a regulator of both motility- and head-associated functions such as capacitation and the acrosome reaction. Isoform 1 binds calcium in vitro. Isoform 2 and isoform 6 probably bind calcium. Isoform 3 and isoform 5 do not bind calcium in vitro. Isoform 4 probably does not bind calcium.,PTM:Isoform 1 is phosphorylated on tyrosine residues during in vitro capacitation. Isoform 3 and isoform 5 are phosphorylated by GSK3B in vitro. Dephosphorylation affects its ability to bind calcium.,similarity:Contains 1 RIIa domain.,subcellular location:According to PubMed:15752768, isoform 1, isoform 3 and isoform 5 are both nuclear and cytoplasmic.,subcellular location:According to Ref.4, isoform 1, isoform 3 and isoform 5 are both nuclear and cytoplasmic.,subcellular location:Localized to fibrous sheath including the surface of the longitudinal columns and ribs of the principal piece of sperm flagella.,subunit:Interacts with FSCB (By similarity). Isoform 3 self-associates. Isoform 3 and isoform 5 interact with GSK3B. Isoform 1 does not interact with GSK3B.,tissue specificity:Expressed in elongating spermatids and spermatozoa (at protein level). Isoform 1 is expressed in testis. Isoform 3 and isoform 5 are also expressed in brain, pancreas and numerous brain tumors.,