| oxidase reaction | The formation of indol blue when a blood smear containing myeloid leukocytes is treated with a mixture of alpha-naphthol and p-dimethylaniline sulfate; the myeloid leukocytes contain an oxidase that catalyses this reaction, the lymphoid leukocytes do not, in bacteriology, a reaction that depends on the presence of certain oxidases in some bacteria that catalyze the transport of electrons between electron donors in the bacteria and an oxidation reduction dye, such as tetramethyl-p-phenylenediamine; the dye is reduced to a blue or black colour. (05 Mar 2000) |
|---|---|
| oxidase test | A colon test for the presence of intracellular cytochrome oxidase based on the reaction with p-phenylenediamine; aids in the identification of Neisseria species and Pseudomonadaceae. (05 Mar 2000) |
| oxyhemoglobin oxidase | <enzyme> Oxyhemoglobin (ferrous) is oxidised by methemoglobin (ferric) Registry number: EC 1.16.- Synonym: haemoglobin oxidase (26 Jun 1999) |
| tetrahydroprotoberberine oxidase | <enzyme> From berberis wilsoniae; catalyses in the presence of oxygen the removal of four hydrogen atoms from the c ring of tetrahydroprotoberberines with production of 4 mol of h2o2 and h2o Registry number: EC 1.3.3.- Synonym: thpb oxidase, tetrahydroberberine oxidase (26 Jun 1999) |
| theophylline oxidase | <enzyme> Catalyses the oxidation of theophylline to 1,3-dimethyluric acid in the presence of ferricytochrome c Registry number: EC 1.5.99.- (26 Jun 1999) |
| thiamin oxidase | <enzyme> Converts thiamine to thiamine acetic acid Registry number: EC 1.1.3.23 Synonym: thiamine dehydrogenase, thiamin dehydrogenase (26 Jun 1999) |
| enacyloxin oxidase | <enzyme> A quinoprotein oxidase which converts the antibiotic enacyloxin iva to enacyloxin IIa by oxidation of the 15' oh to =o Registry number: EC 1.1.99.- Synonym: enx oxidase (26 Jun 1999) |
| ent-kaurene oxidase | <enzyme> Catalyses the oxidation of ent-kaurene to ent-kaurenoic acid with ent-kaurenol and ent-kaurenal as intermediates; requires NADPH and molecular oxygen; a cytochrome p-450 dependent reaction; from gibberella fujikuroi Registry number: EC 1.14.12.- Synonym: kaurene oxidase (26 Jun 1999) |
| trihydroxycholestanoyl-CoA oxidase | <enzyme> Involved in formation of primary bile acids during beta-oxidation of tri- and dihydroxycholestanoic acids (thca and dhca) Registry number: EC 1.3.99.- Synonym: thca-CoA oxidase, trihydroxycholestanoyl-coenzyme a oxidase (26 Jun 1999) |
| trihydroxycoprostanoyl-CoA oxidase | <enzyme> Recognises activated bile acid intermediates Registry number: EC 1.3.99.- Synonym: thcc oxidase, trihydroxycoprostanoyl-coenzyme a oxidase (26 Jun 1999) |
| tyramine oxidase | amine oxidase (flavin-containing) |
| uracil oxidase | An oxidoreductase catalyzing oxidation of uracil to barbituric acid; also oxidises thymine. Synonym: uracil oxidase. (05 Mar 2000) |
| urate oxidase | <enzyme> An enzyme that catalyses the conversion of urate and unidentified products. It is a copper protein. The initial products decompose to form allantoin. Chemical name: Urate:oxygen oxidoreductase Registry number: EC 1.7.3.3 (12 Dec 1998) |
| uric acid oxidase | <enzyme> An enzyme that catalyses the conversion of urate and unidentified products. It is a copper protein. The initial products decompose to form allantoin. Chemical name: Urate:oxygen oxidoreductase Registry number: EC 1.7.3.3 (12 Dec 1998) |
| urushiol oxidase | <enzyme> An enzyme oxidizing benzenediols to semiquinones with O2. Synonym: monophenol monooxygenase, phenol oxidase, phenolase, polyphenol oxidase, urushiol oxidase. (05 Mar 2000) |