oxidasen.

Brit.

/ˈɒksᵻdeɪz/, U.S.

/ˈɑksəˌdeɪz/

Forms: 1800s– oxidase, 1800s– oxydase.

Origin: A borrowing from French. Etymon: French oxydase.

Etymology: < French oxydase (G. Bertrand 1896, in Comptes rendus de l'Acad. des Sci. 122 1217) < oxyde oxide n. + -ase -ase suffix.With the variation in form compare oxide n. and discussion at that entry.

Biochemistry.

Originally: any oxidoreductase. Now: an oxidoreductase which reacts with molecular oxygen, esp. one which catalyses the transfer of hydrogen from a substrate to oxygen so as to form water or hydrogen peroxide (cf. oxygenase n.).monoamine oxidase: see monoamine n. Compounds.

ΚΠ

1896 Jrnl. Chem. Soc. 70 ii. 571 The author gives the generic term oxydase to laicase, tyrosinase, and other oxidising ferments of vegetable origin.

1896 Chem. News 19 June 293/2 (heading) A new oxidase, or oxidising soluble ferment of vegetable origin.

1929 R. P. Walton tr. E. Waldschmidt-Leitz Enzyme Actions vii. 231 In these cases, special oxydases..appear to be present.

1956 Sci. News 40 43 When fresh or withered [tea] leaf is damaged it absorbs oxygen from the air with the aid of an enzyme, an oxidase, occurring in the leaf cells.

1964 Rep. Internat. Union Biochem. Comm. on Enzymes in M. Florkin & E. H. Stotz Comprehensive Biochem. XIII. vi. 33 ‘Oxidase’ will be used only for cases where O₂ acts as an acceptor, and ‘oxygenase’ only for those cases where the O₂ molecule is directly incorporated into the substrate.

1992 Sci. Amer. Sept. 72/1 The organelles known as mitochondria contain a metabolic enzyme called cytochrome oxidase that makes energy available to a cell.

This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).

单词	oxidase
释义	oxidasen. Brit. /ˈɒksᵻdeɪz/, U.S. /ˈɑksəˌdeɪz/ Forms: 1800s– oxidase, 1800s– oxydase. Origin: A borrowing from French. Etymon: French oxydase. Etymology: < French oxydase (G. Bertrand 1896, in Comptes rendus de l'Acad. des Sci. 122 1217) < oxyde oxide n. + -ase -ase suffix.With the variation in form compare oxide n. and discussion at that entry. Biochemistry. Originally: any oxidoreductase. Now: an oxidoreductase which reacts with molecular oxygen, esp. one which catalyses the transfer of hydrogen from a substrate to oxygen so as to form water or hydrogen peroxide (cf. oxygenase n.).monoamine oxidase: see monoamine n. Compounds. ΚΠ 1896 Jrnl. Chem. Soc. 70 ii. 571 The author gives the generic term oxydase to laicase, tyrosinase, and other oxidising ferments of vegetable origin. 1896 Chem. News 19 June 293/2 (heading) A new oxidase, or oxidising soluble ferment of vegetable origin. 1929 R. P. Walton tr. E. Waldschmidt-Leitz Enzyme Actions vii. 231 In these cases, special oxydases..appear to be present. 1956 Sci. News 40 43 When fresh or withered [tea] leaf is damaged it absorbs oxygen from the air with the aid of an enzyme, an oxidase, occurring in the leaf cells. 1964 Rep. Internat. Union Biochem. Comm. on Enzymes in M. Florkin & E. H. Stotz Comprehensive Biochem. XIII. vi. 33 ‘Oxidase’ will be used only for cases where O₂ acts as an acceptor, and ‘oxygenase’ only for those cases where the O₂ molecule is directly incorporated into the substrate. 1992 Sci. Amer. Sept. 72/1 The organelles known as mitochondria contain a metabolic enzyme called cytochrome oxidase that makes energy available to a cell. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1896
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