英文字典中文字典51ZiDian.com
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proenzyme 酶原; 前酶 □原; 前□ proenzyme n 1: any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active [synonym: {proenzyme}, {zymogen}] proenzyme \pro"en*zyme\, n. [.] (Bioch.)
Any one of a class of proteins that are converted, in the normal course of cellular metabolism, into one or more active enzymes; also called {zymogen}. The conversion usually is due to a specific cleavage of a peptide bond by another enzyme, or may be due to acid. [PJC]
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