| cystathionine gamma-lyase | <enzyme> A multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyses the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate. Chemical name: L-Cystathionine cysteine-lyase (deaminating) Registry number: EC 4.4.1.1 (12 Dec 1998) |
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| cystine lyase | <enzyme> An enzyme catalyzing the hydrolysis of l-cystathionine to pyruvate, l-homocysteine, and NH3. See: cystathionine gamma-lyase. Synonym: beta-cystathionase, cystine lyase. (05 Mar 2000) |
| prenylcysteine lyase | <enzyme> A specific enzyme involved in prenylcysteine metabolism in mammalian cells; mw 63 kD Registry number: EC 4.4.1.- Synonym: pclase (26 Jun 1999) |
| cytochrome C1 haem lyase | <enzyme> A mitochondrial haem lyase from saccharomyces cerevisiae; mw about 31 kD; facilitates covalent attachment of haem to the apoforms of c-type cytochromes Registry number: EC 4.99.- Synonym: yeast cc1hl (26 Jun 1999) |
| S-alkylcysteine lyase | <enzyme> Produces pyruvic acid, ammonia and a thiol; consider also glutamine transaminase k, which has cysteine conjugate beta-lyase activity Registry number: EC 4.4.1.6 Synonym: cysteine conjugate beta-lyase (26 Jun 1999) |
| heparin lyase | <enzyme> An enzyme of the isomerase class that catalyses the eliminative cleavage of polysaccharides containing 1,4-linked d-glucuronate or l-iduronate residues and 1,4-alpha-linked 2-sulfoamino-2-deoxy-6-sulfo-d-glucose residues to give oligosaccharides with terminal 4-deoxy-alpha-d-gluc-4-enuronosyl groups at their non-reducing ends. Chemical name: heparin lyase Registry number: EC 4.2.2.7 (12 Dec 1998) |
| protein A24 lyase | <enzyme> Releases histone 2a and ubiquitin from chromosomal protein a24 Registry number: EC 4.- (26 Jun 1999) |
| histidine ammonia-lyase | <enzyme> An enzyme of the lyase class that catalyses the reaction of l-histidine to form urocanate and ammonia. The reaction is the initial step of histidine catabolism. Genetic deficiency of the enzyme, transmitted as an autosomal recessive trait, causes histidinaemia. Chemical name: L-Histidine ammonia-lyase Registry number: EC 4.3.1.3 (12 Dec 1998) |
| selenocysteine lyase | <enzyme> Decomposes l-selenocysteine into l-alanine and h2se Registry number: EC 4.99.- Synonym: selenocysteine beta-lyase (26 Jun 1999) |
| hyaluronate lyase | <enzyme> Also acts on chondroitin; formerly EC 4.2.99.1 Registry number: EC 4.2.2.1 Synonym: mucinase, spreading factor (26 Jun 1999) |
| hyaluronic lyase | <enzyme> Also acts on chondroitin; formerly EC 4.2.99.1 Registry number: EC 4.2.2.1 Synonym: mucinase, spreading factor (26 Jun 1999) |
| hydroperoxide lyase | <enzyme> Rabbit leukocyte enzyme; converts 15-hpete to 15-ketopentadeca-5,8,11,13-tetraenoic acid plus pentanol Registry number: EC 4.1.2.- Synonym: fatty acid hydroperoxide lyase, hpo lyase (26 Jun 1999) |
| hydroxymandelonitrile lyase | <enzyme> Catalyses the reversible condensation of cyanide with 4-hydroxybenzaldehyde to yield 4-hydroxymandelonitrile; can be obtained from plant extracts by immobilised metal ion affinity chromatography Registry number: EC 4.1.2.11 Synonym: hmn lyase, 4-hydroxymandelonitrile hydroxybenzaldehyde-lyase, hydroxynitrile lyase (26 Jun 1999) |
| spore photoproduct lyase | <enzyme> A 40-kD polypeptide that shows regional amino acid sequence homology to DNA photolyases; involved in repair of uv radiation-induced DNA damage during spore germination Registry number: EC 4.1.99.- Synonym: sp lyase, spl protein, spl gene product (26 Jun 1999) |
| streptogramin B lyase | <enzyme> An intramolecular lyase similar to EC 5.5.1.1; involved in resistance to etamycin and vernamycin b(alpha) in streptomyces lividans; reaction given in first source Registry number: EC 5.5.1.- (26 Jun 1999) |