| tyrosine-repressible transaminase | <enzyme> From E coli; catalyses the amination of 2-ketoisocaproate to leucine; encoded by tyrb; a functional leuabcd operon is required for leucine synthesis by this enzyme Registry number: EC 2.6.1.- Synonym: transaminase d, tyrosine-2-ketoisocaproate aminotransferase (26 Jun 1999) |
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| tyrosine transaminase | <enzyme> An enzyme that catalyses the conversion of l-tyrosine and 2-oxoglutarate to 4-hydroxyphenylpyruvate and l-glutamate. It is a pyridoxal-phosphate protein. L-phenylalanine can act instead of l-tyrosine. The mitochondrial enzyme may be identical with aspartate transaminase (ec 2.6.1.1.). Chemical name: L-Tyrosine:2-oxoglutarate aminotransferase Registry number: EC 2.6.1.5 (12 Dec 1998) |
| tyrosine-trna ligase | <enzyme> An enzyme that activates tyrosine with its specific transfer RNA. Chemical name: L-Tyrosine:tRNA-(Tyr) ligase (AMP-forming) Registry number: EC 6.1.1.1 (12 Dec 1998) |
| L-tyrosine ammonia-lyase | <enzyme> Catalyses the conversion of tyrosine to trans-p-coumaric acid and ammonia Registry number: EC 4.3.1.- Synonym: tyrosine ammonia-lyase (26 Jun 1999) |
| lymphocyte specific protein tyrosine kinase p56(lck) | <enzyme> This enzyme is a lymphoid specific src family tyrosine kinase that is critical for T-cell development and activation. Lck is associated with the cytoplasmic domains of CD4, CD8 and the beta-chain of the il-2 receptor, and is thought to be involved in the earliest steps of tcr-mediated T-cell activation. Registry number: EC 2.7.11.- (12 Dec 1998) |
| abscisic acid 8'-hydroxylase | <enzyme> Catalyses conversion of abscisic acid to 8'-hydroxyabscisic acid, which rearranges to phaseic acid Registry number: EC 1.14.99.- Synonym: aba 8'-hydroxylase (26 Jun 1999) |
| aflatoxin B1 hydroxylase | <enzyme> Hydroxylases may be replaced by mixed function oxidases as appropriate Registry number: EC 1.14.- Synonym: aflatoxin b1 4-hydroxylase (26 Jun 1999) |
| aklavinone 11-hydroxylase | <enzyme> A flavin-type bacterial hydroxylase from streptomyces peucetius; 489 amino acid residues, mw 52.3 kD; genbank u09844 Registry number: EC 1.14.14.- Synonym: dnrf protein, dnrf gene product (26 Jun 1999) |
| aniline hydroxylase | <enzyme> A drug-metabolizing, cytochrome p-450 enzyme which catalyses the hydroxylation of aniline to hydroxyaniline in the presence of reduced flavoprotein and molecular oxygen. Registry number: EC 1.14.14.- (12 Dec 1998) |
| arachidonic acid 18-hydroxylase | <enzyme> Converts arachidonic acid to 18-hydroxy-5,8,11,14-eicosatetraenoic acid in the presence of NADPH; cytochrome p450 enzyme Registry number: EC 1.14.13.- Synonym: arachidonic acid 18(r)-hydroxylase, arachidonic acid omega 3-hydroxylase (26 Jun 1999) |
| arylamine N-hydroxylase | <enzyme> Cytochrome p-448 dependent Registry number: EC 1.14.13.- Synonym: 2-aminofluorene n-hydroxylase (26 Jun 1999) |
| benzopyrene hydroxylase | <enzyme> A drug-metabolizing, cytochrome p-448 (p-450) enzyme which catalyses the hydroxylation of benzopyrene to 3-hydroxybenzopyrene in the presence of reduced flavoprotein and molecular oxygen. Also acts on certain anthracene derivatives. Registry number: EC 1.14.14.- (12 Dec 1998) |
| beta-carotene hydroxylase | <enzyme> O2-dependent NADPH-dependent monooxygenase from erwinia herbicola; forms zeaxanthin; amino acid sequence has been determined; genbank m87280 Registry number: EC 1.14.13.- Synonym: beta-carotene monooxygenase, crtz gene product (26 Jun 1999) |
| biphenyl-4-hydroxylase | <enzyme> Mixed function oxidase Registry number: EC 1.14.14.- (26 Jun 1999) |
| bufuralol 1'-hydroxylase | <enzyme> Liver microsomal enzyme utilizing NADPH and cytochrome p-450; competetive inhibition by debrisoquine Registry number: EC 1.14.99.- Synonym: bufuralol 1'-monooxygenase (26 Jun 1999) |