2p9r | pdb_00002p9r
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Human alpha2-macroglogulin is composed of multiple domains, as predicted by homology with complement component C3
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Structural highlights
FunctionA2MG_HUMAN 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. Evolutionary Conservation![]() Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. | ||||||||||||||||||
This page was last modified 09:08, 21 February 2024.