| [H+] | hydrogen ion concentration |
|---|---|
| HCl | hydrogen chloride |
| HDP | hexose diphosphate; high-density polyethylene; hydrogen diphosphonate; hydroxydimethylpyrimidine |
| HF | Hageman factor; haplotype frequency; hard filled [capsule]; hay fever; head of fetus; head forward; ... |
| HVSD | hydrogen-detected ventricular septal defect |
| alpha-1,4-glucan lyase | <enzyme> Degrades alpha-1,4-glucan to produce 1,5-anhydrofructose; from seaweeds gracilariopsis lemaneiformis and gracilaria verrucosa; mw 111 kD; amino acid sequence has been determined Registry number: EC 4.2.2.- Synonym: alpha-1,4-glucan 4-lyase (26 Jun 1999) |
|---|---|
| alpha-pinene oxide lyase | <enzyme> From nocardia sp. Strain p18.3; catalyses the cleavage of both rings of the bicyclic structure with the formation of 2-methyl-5-isopropylhexa-2,5-dienal Registry number: EC 4.1.2.- Synonym: alpha-pinene oxide lyase (decyclizing) (26 Jun 1999) |
| aminodeoxychorismate lyase | <enzyme> Catalyses the conversion of aminodeoxychorismate to paba and pyruvate Registry number: EC 4.1.3.- Synonym: enzyme x, folate biosynthesis, 4-amino-4-deoxychorismate pyruvate-lyase (26 Jun 1999) |
| argininosuccinate lyase | <enzyme> An enzyme of the urea cycle which splits argininosuccinate to fumarate plus arginine. Its absence leads to the metabolic disease argininosuccinic acidemia in man. Chemical name: N-(L-Argininosuccinate) arginine-lyase Registry number: EC 4.3.2.1 (12 Dec 1998) |
| aspartate ammonia-lyase | <enzyme> An enzyme that catalyses the conversion of aspartic acid to ammonia and fumaric acid in plants and some microorganisms. Chemical name: L-Aspartate ammonia-lyase Registry number: EC 4.3.1.1 (12 Dec 1998) |
| ATP citrate lyase | ATP citrate (pro-3S)-lyase |
| ATP citrate (pro-3S)-lyase | <enzyme> An enzyme that, in the presence of ATP and CoA, catalyses the cleavage of citrate to yield acetyl CoA, oxaloacetate, ADP, and orthophosphate. This reaction represents an important step in fatty acid biosynthesis. Chemical name: ATP:citrate oxaloacetate-lyase ((pro-S)-CH2COO(-)--acetyl-CoA) (ATP-dephosphorylating) Registry number: EC 4.1.3.8 Synonym: citrate cleavage enzyme. (12 Dec 1998) |
| benzaldehyde lyase | <enzyme> Requires thiamine ppi; from pseudomonas fluorescens; cleaves the acycloin linkage of benzoin, producing 2 molecules of benzaldehyde; also acts on anisoin, forming anisaldehyde Registry number: EC 4.1.2.- Synonym: benzoin benzaldehyde lyase (26 Jun 1999) |
| carbonate hydro-lyase | carbonic anhydrase |
| carbon-phosphorus lyase | <enzyme> Found in bacteria which utilise alkyl and phenylphosphonic acids Registry number: EC 4.99.- Synonym: c-p lyase, carbon-phosphorus cleavage enzyme (26 Jun 1999) |
| malate ATP lyase | <chemical> Composed of malyl-CoA synthetase (EC 6.2.1.9) and malyl-CoA lyase (EC 4.3.24) Synonym: malate lyase (26 Jun 1999) |
| malate carboxy-lyase | <enzyme> Decarboxylates l-malic acid to l-lactic acid and co2 with traces of pyruvic acid Registry number: EC 4.1.1.- (26 Jun 1999) |
| mandelonitrile lyase | <enzyme> Catalyses the reversible condensation of hcn with aldehydes to form d-alpha-hydroxynitriles; contains fad Registry number: EC 4.1.2.10 Synonym: mandelonitrile benzaldehyde-lyase, oxynitrilase (26 Jun 1999) |
| gellan lyase | <enzyme> Cleaves beta-d-glucosyl-1-4-beta-d-glucuronosyl sequence in gellan Registry number: EC 4.2.2.- Synonym: gellanase (26 Jun 1999) |
| glucuronan lyase | <enzyme> Catalyses beta-elimination cleavage of acetylated and deacetylated (1->4)-beta-d-glucuronan Registry number: EC 4.2.2.- (26 Jun 1999) |