The International journal of biochemistry 1994-Jan
Purification and characterization of a novel tyrosyl-aminopeptidase from human osteoclastomas.
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نبذة مختصرة
1. An aminopeptidase that preferentially releases tyrosine residues from synthetic substrates has been purified from human osteoclastomas. This enzyme also hydrolyses dipeptides having an N-terminal tyrosine and a hydrophobic carboxy-terminal amino acid. 2. The tyrosyl-aminopeptidase consists of two identical subunits with M(r)s of about 100,000. 3. The enzyme is a metallopeptidase and is inhibited by chelating agents, chloromethylketone analogues of hydrophobic amino acids, and bestatin.