| 4-methyl-3-hydroxyanthranilic acid adenylyltransferase | <enzyme> From streptomyces chrysomallus; catalyses the formation of 4-mha in the presence of ATP Registry number: EC 2.7.7.- Synonym: 4-mha activating enzyme (26 Jun 1999) |
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| 4-methyl-5-nitrocatechol oxygenase | <enzyme> Catalyses conversion of 4-methyl-5-nitrocatechol to 2-hydroxy-5-methylquinone; dntb isolated from burkholderia; genbank u68411 Registry number: EC 1.13.12.- Synonym: mnc oxygenase, dntb gene product (26 Jun 1999) |
| 4-methylene-L-glutamine amidohydrolase | <enzyme> From peanut leaves Registry number: EC 3.5.1.- (26 Jun 1999) |
| 4-methyleneglutamine synthetase | <enzyme> Catalyses synthesis of 4-methyleneglutamine from 4-methyleneglutamic acid + nh3 in germinating peanuts Registry number: EC 6.3.1.7 Synonym: 4-methyleneglutamate - ammonia ligase (26 Jun 1999) |
| 4-methylmuconolactone methyl-isomerase | <enzyme> From nocardioform actinomycetes; forms 3-methylmuconolactone Registry number: EC 5.3.3.- Synonym: 4-methyl-2-enelactone methylisomerase, mmlm-isomerase (26 Jun 1999) |
| 4-methylumbelliferyl alpha-galactosidase | <enzyme> Aspect of EC 3.2.1.22, alpha-galactosidase Registry number: EC 3.2.1.- (26 Jun 1999) |
| 4-methylumbelliferyl-beta-galactosidase | <enzyme> Non-specific brain enzyme; distinct from EC 3.2.1.46 Registry number: EC 3.2.1.- Synonym: 4-mub-galactosidase (26 Jun 1999) |
| 4-methylumbelliferyl-beta-glucosidase | <enzyme> Aspect of EC 3.2.1.21 Registry number: EC 3.2.1.- (26 Jun 1999) |
| 4-methylumbelliferyl-tetra-N-acetyl-beta-D-chitotetraoside hydrolase | <enzyme> Not identical to human plasma lysozyme Registry number: EC 3.2.1.- Synonym: mu-tact hydrolase (26 Jun 1999) |
| 4-nitroanisole O-demethylase | <enzyme> Contains cytochrome p-450, cytochrome b5, NADPH-cytochrome p-450 reductase and NADH-cytochrome b5 reductase Registry number: EC 1.- Synonym: p-nitroanisole o-demethylation system, p-nitroanisole o-demethylating system, para-nitroanisole o-demethylase, p-nitroanisole o-demethylase (26 Jun 1999) |
| 4-nitrobenzaldehyde dehydrogenase | <enzyme> Uses nad+ as acceptor yielding 4-nitrobenzoate Registry number: EC 1.2.1.- Synonym: 4-nad dehydrogenase (26 Jun 1999) |
| 4-nitrobenzoate reductase | <enzyme> Forms 4-aminobenzoate from 4-nitrobenzoate Registry number: EC 1.7.- Synonym: para-nitrobenzoate reductase, p-nitrobenzoate reductase (26 Jun 1999) |
| 4-nitrobenzyl esterase | <enzyme> Catalyses the hydrolysis of several beta-lactam p-nitrobenzyl (pnb) esters to the corresponding free acid and pnb alcohol; genbank u06089 Registry number: EC 3.1.1.- Synonym: p-nitrobenzyl esterase, pnb carboxy-esterase, pnbce, pnba protein, pnba gene product (26 Jun 1999) |
| 4-nitrobenzylalcohol dehydrogenase | <enzyme> Uses dichlorophenolindophenol and phenazine methosulfate as receptors; yields 4-nitrobenzaldehyde Registry number: EC 1.1.99.- Synonym: 4-nba dehydrogenase (26 Jun 1999) |
| 4-nitrophenyl beta-galactoside hydrolase | <enzyme> From biomphalaria glabrata; does not act on galactans Registry number: EC 3.2.1.- Synonym: para-nitrophenyl beta-galactoside hydrolase, 4-nitrophenyl-beta-d-galactosidase (26 Jun 1999) |