Purity ~90% (SDS-PAGE). CRAHSP1 is a serine phosphoprotein originally identified as a physiological substrate for the Ca2+- calmodulin regulated protein phosphatase calcineurin (PP2B). This protein interacts with the STYX/dead phosphate protein in developing spermatids and is a paralog of the brain-specific mRNA-binding protein PIPPIN. It is thought to play a common role in calcium-mediated signal transduction resulting from phosphorylation on serine residues. Source: Recombinant protein corresponding to aa1-147 from human CARHSP1, fused to His-tag at N-terminal expressed in E. coli. Molecular Weight: ~18kD (167aa) AA