Anti-ADAMTS3 antibody - Propeptide domain (ab39200)

Relevance

ADAMTS3 is a member of the larger family of ADAMs (A Disintegrin And Metalloproteinase) metalloproteinases containing thrombospondin (TS) repeats. ADAMTS3 (A Disintegrin And Metalloproteinase with ThromboSpondin 3 motif was first described in human brain. Human ADAMTS3 is 61% identical to human ADAMTS2. Both ADAMTS2 and ADAMTS3 have the ability to process procollagen II, but it is suggested that ADAMTS3 is the majorprocollagen II N-propeptidase. ADAMTS3 expression is found in placenta, cartilage, skin, lung, brain, and heart. Full length human ADAMTS3 contains 1201 amino acids and has a predicted mass of 135kDa, but glycosylation and the abundance of cysteine residues gives ADAMTS3 a greater apparent molecular weight on reduced SDS-PAGE gels. Purified ADAMTS3 resolves at a lower molecular weight of 108 kDa, due to cleavage at the furin site. ADAMTS3 contains the canonical HexxHxxxxxH zinc metalloproteinase motif, and has been shown to be proteolytically active, cleaving procollagen II. In addition to the metalloprotease domain, ADAMTS3 has a propeptide domain, a prohormone convertase (PC, furin) cleavage site, a cysteine-rich domain, and three thrombospondin-1 like domains, followed by a C-terminal domain unique to ADAMTS2 and ADAMTS3. ADAMTS3 does not have a transmembrane domain, unlike many of the ADAMs proteases, and is a secreted protein, much of which binds to the ECM (extracellular matrix).

Cellular localization

Secreted. Associated with the extracellular matrix.

Alternative names

Database links