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. Recombinant protein corresponding to aa1-147 from human CARHSP1, fused to His-tag at N-terminal expressed in E. coli. Molecular Weight: ~18kD (167aa) Amino Acid Sequence: MGSSHHHHHH SSGLVPRGSH MSSEPPPPPQ PPTHQASVGL LDTPRSRERS PSPLRGNVVP SPLPTRRTRT FSATVRASQG PVYKGVCKCF CRSKGHGFIT PADGGPDIFL HISDVEGEYV PVEGDEVTYK MCSIPPKNEK LQAVEVVITH LAPGTKHETW SGHVISS Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.