| ammon | ammonia |
|---|---|
| GLUL | glutamate (ammonia) ligase |
| TAN | total adenine nucleotide; total ammonia nitrogen |
| glutamate-ammonia ligase | <enzyme> An enzyme that catalyses the conversion of ATP, l-glutamate, and nh3 to ADP, orthophosphate, and l-glutamine. It also acts more slowly on 4-methylene-l-glutamate. Chemical name: L-Glutamate:ammonia ligase (ADP-forming) Registry number: EC 6.3.1.2 (12 Dec 1998) |
|---|---|
| phenylalanine ammonia lyase | <enzyme> An enzyme that catalyses the deamination of l-phenylalanine to form trans-cinnamate and ammonia. It may also act on l-tyrosine. Since the enzyme deprives neoplastic tissue of phenylalanine, it has been used experimentally in the treatment of acute lymphoblastic leukaemia. The enzyme is obtained from many plants and is used as an enzymic marker for lignification and other developmental processes in plant cells. Pharmacological action: antineoplastic agent. Chemical name: L-Phenylalanine ammonia-lyase Registry number: EC 4.3.1.5 (12 Dec 1998) |
| 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) |
| diaminopropionate ammonia-lyase | <enzyme> Used for the determination of diaminopropionic acid Registry number: EC 4.3.1.- (26 Jun 1999) |
| ethanolamine ammonia-lyase | <enzyme> An enzyme that catalyses the deamination of ethanolamine to acetaldehyde. Chemical name: Ethanolamine ammonia-lyase Registry number: EC 4.3.1.7 (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) |