| 4-nitrophenyl-alpha-glucosidase | <enzyme> Involved in glycoprotein precessing; cleaves 1-3 linked glucose residues Registry number: EC 3.2.1.- Synonym: pnp-alpha-d-glucosidase, para-nitrophenyl-alpha-glucosidase, glucosidase II (26 Jun 1999) |
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| 4-nitrophenyl-alpha-N-acetylglucosaminidase | <enzyme> Aspect of EC 3.2.1.50 Registry number: EC 3.2.1.- Synonym: pnpanacglase, para-nitrophenyl-alpha-n-acetylglucosaminidase, 4-nitrophenyl-n-acetyl-beta-d-glucosaminidase (26 Jun 1999) |
| 4-nitrophenylphosphatase | <enzyme> An enzyme that catalyses the hydrolysis of nitrophenyl phosphates to nitrophenols. at acid pH it is probably acid phosphatase (ec 3.1.3.2); at alkaline pH it is probably alkaline phosphatase (ec 3.1.3.1). Chemical name: 4-Nitrophenylphosphate phosphohydrolase Registry number: EC 3.1.3.41 (12 Dec 1998) |
| 4-nitrophenylphosphorylcholine phosphodiesterase | <enzyme> Catalyses the conversion of p-nitrophenylphosphocholine to yield p-nitrophenol and choline phosphate; may be the same as EC 3.1.4.38, glycerophosphocholine cholinephosphodiesterase Registry number: EC 3.1.4.- Synonym: pnp phosphocholine phosphodiesterase, pnppc phosphodiesterase, p-nitrophenylphosphorylcholine phosphodiesterase (26 Jun 1999) |
| 4-nitroquinoline-1-oxide | <chemical> 4-nitroquinoline 1-oxide. A potent mutagen and carcinogen. This compound and its metabolite 4-hydroxyaminoquinoline-1-oxide bind to nucleic acids. It inactivates bacteria but not bacteriophage. Pharmacological action: carcinogens, mutagens. Chemical name: Quinoline, 4-nitro-, 1-oxide (12 Dec 1998) |
| 4-oxalcitramalate aldolase | <enzyme> Cleaves 4-oxalcitramalate to pyruvate and oxalacetate in presence of mgcl2; also cleaves 4-hydroxy-4-methyloxoglutarate into pyruvate Registry number: EC 4.1.3.- Synonym: pseudomonas ochraceae enzyme II (26 Jun 1999) |
| 4-oxalmesaconate hydro-lyase | <enzyme> Converts 4-oxalmesaconate ((e)-3-carboxy-5-oxo-2-hexenedioic acid) to 4-oxalcitramalate Registry number: EC 4.2.1.- Synonym: pseudomonas ochraceae enzyme i (26 Jun 1999) |
| 4-oxalocrotonate tautomerase | <enzyme> Sequence has been determined Registry number: EC 5.- Synonym: 4-oxalocrotonate isomerase (26 Jun 1999) |
| 4-oxo-5-hydroxyvalerate dehydrogenase | <enzyme> Uses nad or nadp; involved in transamination route of porphyrin biosynthesis Registry number: EC 1.1.1.- Synonym: 4-ox-5-hy dehydrogenase (26 Jun 1999) |
| 4-oxocyclohex-2-enecarboxylate 5-desaturase | <enzyme> Aromatises 4-oxocyclohex-2-enecarboxylic acid to 4-hydroxybenzoic acid; unstable; approx mol mass 43 kD Registry number: EC 1.- Synonym: ochc 5-desaturase (26 Jun 1999) |
| 4-oxocyclohexanecarboxylate 2-desaturase | <enzyme> Produces 4-oxocyclohex-2-enecarboxylic acid from 4-oxocyclohexanecarboxylic acid; requires oxygen; monomeric; mol mass 67 kD; contains one tryptophan, one histidine, and two cysteine residues per enzyme molecule Registry number: EC 1.3.3.- Synonym: ochc 2-desaturase (26 Jun 1999) |
| 4-oxoproline reductase | A flavoenzyme that catalyses the conversion of 4-hydroxyproline to d'-pyrroline-3-hydroxy-5-carboxylate using FAD; this enzyme appears to be deficient in individuals with hyperhydroxyprolinaemia, an enzyme that catalyses the reaction of 4-hydroxyproline with NAD+ to form NADH and 4-oxoproline. Synonym: 4-oxoproline reductase. (05 Mar 2000) |
| 4-oxoquinoline monooxygenase | <enzyme> N-terminal forms 1h-3-hydroxy-4-oxoquinoline; requires NADH and oxygen Registry number: EC 1.14.13.- Synonym: 1h-4-oxoquinoline monooxygenase (26 Jun 1999) |
| 4-phenylenediamine oxidase | <enzyme> When used as assay for ceruloplasmin, index *ceruloplasmin Registry number: EC 1.4.- Synonym: polyphenylenediamine oxidase, ppd oxidase, p-phenylenediamine oxidase (26 Jun 1999) |
| 4-phenylenediamine peroxidase | <enzyme> Present in canine eye retina, ciliary body and iris Registry number: EC 1.11.1.- Synonym: ppd peroxidase, p-phenylenediamine peroxidase (26 Jun 1999) |