| ASL | antistreptolysin; argininosuccinate lyase |
|---|---|
| ATP | adenosine triphosphate; ambient temperature and pressure; autoimmune thrombocytopenic purpura |
| AtP | attending physician |
| ATP-2Na | adenosine triphosphate disodium |
| ICL | idiopathic CD4 T-cell lymphocytopenia; iris-clip lens; isocitrate lyase |
| ATP-diphosphatase | <enzyme> An enzyme that catalyses breakdown of ATP to AMP, usually extracted from plants, but aortic and placental forms have also been described. (18 Nov 1997) |
|---|---|
| ATP-monophosphatase | <enzyme> A group of enzymes which catalyze the hydrolysis of ATP coupled with another function such as transporting calcium across a membrane. These enzymes may be dependent on calcium, magnesium, anions, h+, or DNA. Chemical name: ATP phosphohydrolase Registry number: EC 3.6.1.3 (12 Dec 1998) |
| ATP phosphoribosyltransferase | <enzyme> An enzyme that catalyses the first step of the pathway for histidine biosynthesis in salmonella typhimurium. ATP reacts reversibly with 5-phosphoribosyl-1-pyrophosphate to yield n-1-(5'-phosphoribosyl)-ATP and pyrophosphate. Chemical name: 1-(5-Phospho-D-ribosyl)-ATP:pyrophosphate phospho-alpha-D- ribosyltransferase Registry number: EC 2.4.2.17 (12 Dec 1998) |
| ATP sulfurylase | <enzyme> An enzyme that catalyses the activation of sulfate ions by ATP to form adenosine-5'-phosphosulfate and pyrophosphate. This reaction constitutes the first enzymatic step in sulfate utilization following the uptake of sulfate. Chemical name: ATP:sulfate adenylyltransferase Registry number: EC 2.7.7.4 (12 Dec 1998) |
| ATP synthase | <enzyme> An enzyme that catalyses the conversion of phosphate and ADP into ATP during oxidativephosphorylation in mitochondriaand bacteria or photophosphorylationin chloroplasts. (09 Oct 1997) |
| ATP-ubiquitin-dependent proteinase | <enzyme> A component of the cytosolic ubiquitin-dependent proteolysis system Registry number: EC 3.4.- Synonym: ucden (26 Jun 1999) |
| caged ATP | <biochemistry> A derivative of ATP that is not biologically active until a photosensitive bond has been cleaved. (21 Mar 1998) |
| phosphoenolpyruvate carboxykinase (ATP) | <enzyme> An enzyme of the lyase class that catalyses the conversion of ATP and oxaloacetate to ADP, phosphoenolpyruvate, and carbon dioxide. The enzyme is found in some bacteria, yeast, and trypanosoma, and is important for the photosynthetic assimilation of carbon dioxide in some plants. Chemical name: ATP:oxaloacetate carboxy-lyase (transphosphorylating) Registry number: EC 4.1.1.49 (12 Dec 1998) |
| seryl-tRNA-ATP phosphotransferase | <enzyme> Produces phosphoseryl trna; plays suppressor role in in vitro globin synthesis Registry number: EC 2.7.1.- Synonym: ser-trna ptase, seryl trna kinase (26 Jun 1999) |
| hydrogen-transporting ATP synthase | <enzyme> A group of enzymes which are involved in the reversible synthesis of ATP and that transport protons from the cytoplasmic to the matrix side of the mitochondrial membrane. The flow of protons through the f(0) channel results in ATP synthesis by f1. Chemical name: ATP phosphohydrolase (H+-transporting) Registry number: EC 3.6.1.34 (12 Dec 1998) |
| DNA topoisomerase (ATP-hydrolysing) | <enzyme> An ATP-requiring enzyme which, in the presence of magnesium ions, introduces negative supertwists into closed and possibly linear duplex DNA. The enzyme is implicated in DNA replication and transcription. It causes the storage of mechanical strain energy in the superhelical turns of DNA at the expense of ATP hydrolysis. Chemical name: DNA topoisomerase (ATP-hydrolysing) Registry number: EC 5.99.1.3 (12 Dec 1998) |
| oligophosphoglyceroyl-ATP 3'-phosphodiesterase | <enzyme> Located in mitochondrial fraction of rat liver; selectively hydrolyzes the oligo cpd to monomeric units of 3-phosphoglyceroyl-gamma-triphospho-5'-adenosine Registry number: EC 3.1.4.- Synonym: opg-ATP-phosphodiesterase (26 Jun 1999) |
| adenylosuccinate lyase | <enzyme> An enzyme that, in the course of purine ribonucleotide biosynthesis, catalyses the conversion of 5'-phosphoribosyl-4-(n-succinocarboxamide)-5-aminoimidazole to 5'-phosphoribosyl-4-carboxamide-5-aminoimidazole and the conversion of adenylosuccinic acid to AMP. Chemical name: N(6)-(1,2-Dicarboxyethyl)AMP AMP-lyase Registry number: EC 4.3.2.2 (12 Dec 1998) |
| adenylylosuccinate lyase | <enzyme> An enzyme that, in the course of purine ribonucleotide biosynthesis, catalyses the conversion of 5'-phosphoribosyl-4-(n-succinocarboxamide)-5-aminoimidazole to 5'-phosphoribosyl-4-carboxamide-5-aminoimidazole and the conversion of adenylosuccinic acid to AMP. Chemical name: N(6)-(1,2-Dicarboxyethyl)AMP AMP-lyase Registry number: EC 4.3.2.2 (12 Dec 1998) |
| alkylmercury lyase | <enzyme> From bacteria; catalyses the protonolysis of the carbon-mercury bond to give hydrocarbon and mercury as a mercaptide Registry number: EC 4.99.1.2 Synonym: organomercury lyase, organomercurial lyase, phenylmercury lyase (26 Jun 1999) |