Anti-Complement 1s (Complement Component 1 s subcomponent, Basic proline-rich peptide IB-1, C1 ester

C1s proenzyme is a glycoprotein produced primarily by hepatocytes but also by other cells. The proenzyme is produced as a single chain polypeptide of 688aa. Upon activation the peptide is cleaved between R437 and I438 giving the activated enzyme consisting of two disulfide-linked chains, A chain (52.2kD) and B chain (27.7kD). The Ca dependent catalytic subunit of the C1 complex (C1q, C1r, C1s) comprises of two C1s and two C1r molecules and this serine protease tetramer is responsible for the initial steps in the classical complement pathway, cleavage of C4 and C2. Applications: Suitable for use in Western Blot. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 12 months. For maximum recovery of product, 11c7entrifuge the original vial after thawing and prior to removing the cap.