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Enzymology

Human aminopeptidase A enzymatic properties elucidated

Published in Gene Therapy Weekly, October 19th, 2006

A recent study from Japan has reported on the elucidation of the enzymatic properties of human aminopeptidase A (APA).

"APA is a type II membrane-bound protein implicated in the regulation of blood pressure in the brain renin-angiotensin system. In this study, a recombinant soluble form of APA was expressed in a baculovirus system, purified to homogeneity, and characterized," wrote Y. Goto and colleagues, RIKEN.

"By using synthetic substrates, it was shown that although the enzyme has a rather broad substrate specificity in the absence of Ca2+, the preferential release of acidic amino acid residues was observed in the presence of...

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