proenzymen.

Brit.

/prəʊˈɛnzʌɪm/, U.S.

/proʊˈɛnˌzaɪm/

Origin: Formed within English, by derivation. Etymons: pro- prefix², enzyme n.

Etymology: < pro- prefix² + enzyme n.

Biochemistry.

A biologically inactive precursor of an enzyme; = zymogen n.

ΚΠ

1900 W. A. N. Dorland Amer. Illustr. Med. Dict. 538/2 Pro-enzyme, an enzyme in its incomplete or unripe stage.

1902 C. A. Herter Lect. Chem. Pathol. viii. 254 The glandular cells from which they [sc. enzymes] come apparently do not hold them in any considerable quantity, but contain substances called proënzymes, from which they are produced.

1976 Nature 22 Jan. 235/2 Plasminogen is the plasma proenzyme which, on conversion to its active form, plasmin, is considered responsible for lysis of fibrin deposits resulting from physiological or pathological activation of the coagulation cascade.

1991 New Scientist 8 June 40/2 The enzymes..leave the cell as ‘proenzymes’ which must be activated before they can break down connective tissue.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	proenzyme
释义	proenzymen. Brit. /prəʊˈɛnzʌɪm/, U.S. /proʊˈɛnˌzaɪm/ Origin: Formed within English, by derivation. Etymons: pro- prefix², enzyme n. Etymology: < pro- prefix² + enzyme n. Biochemistry. A biologically inactive precursor of an enzyme; = zymogen n. ΚΠ 1900 W. A. N. Dorland Amer. Illustr. Med. Dict. 538/2 Pro-enzyme, an enzyme in its incomplete or unripe stage. 1902 C. A. Herter Lect. Chem. Pathol. viii. 254 The glandular cells from which they [sc. enzymes] come apparently do not hold them in any considerable quantity, but contain substances called proënzymes, from which they are produced. 1976 Nature 22 Jan. 235/2 Plasminogen is the plasma proenzyme which, on conversion to its active form, plasmin, is considered responsible for lysis of fibrin deposits resulting from physiological or pathological activation of the coagulation cascade. 1991 New Scientist 8 June 40/2 The enzymes..leave the cell as ‘proenzymes’ which must be activated before they can break down connective tissue. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1900
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