Alpha 2-Macroglobulin (A2M) Antibody – Goat Polyclonal

PZP: Is able to inhibit all four classes of proteinases by a unique 'trapping' mechanism. This protein has a peptide stretch, called the 'bait region' which contains specific cleavage sites for different proteinases. When a proteinase cleaves the bait region, a conformational change is induced in the protein which traps the proteinase. The entrapped enzyme remains active against low molecular weight substrates (activity against high molecular weight substrates is greatly reduced). Following cleavage in the bait region a thioester bond is hydrolyzed and mediates the covalent binding of the protein to the proteinase. Belongs to the protease inhibitor I39 (alpha-2- macroglobulin) family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Secreted; Secreted, signal peptide

Cellular Component: extracellular space; extracellular region

Molecular Function: serine-type endopeptidase inhibitor activity; protease inhibitor activity; endopeptidase inhibitor activity; protein complex binding

Biological Process: negative regulation of peptidase activity; embryo implantation