| nucleotide pyrophosphate transferase | <enzyme> Transfers the beta, gamma pyrophosphate group from ATP to 3'-hydroxy group of ribonucleotides, oligonucleotides or trna Registry number: EC 2.7.6.- (26 Jun 1999) |
|---|---|
| diphosphopyridine nucleotide | nAD |
| thymine nucleotide | A major constituent of DNA. Synonym: thymidine 5'-monophosphate, thymine nucleotide. (05 Mar 2000) |
| triphosphopyridine nucleotide | Former name for nicotinamide adenine dinucleotide phosphate. (05 Mar 2000) |
| flavin nucleotide | <biochemistry> Flavin derivatives that act as prosthetic groups (covalently linked cofactors) for flavin enzymes. (18 Nov 1997) |
| 2',3'-cyclic nucleotide 2'-phosphodiesterase | <enzyme> Catalyses the hydrolysis of the 2'-phosphodiesterase bond to yield nucleoside 3'phosphate Registry number: EC 3.1.4.16 Synonym: 2',3'-cyclic nucleotide 2'-phosphohydrolase (26 Jun 1999) |
| 2',3'-cyclic nucleotide 3'-phosphodiesterase | <enzyme> Catalyses the hydrolysis of the 3'-phosphoesterase bond to yield nucleoside 2'-phosphate Registry number: EC 3.1.4.37 Synonym: 2',3'-cyclic nucleotide 3'-phosphohydrolase, 2',3'-cn phosphodiesterase, 2',3'-cnpase (26 Jun 1999) |
| 2',3'-cyclic-nucleotide phosphodiesterases | <enzyme> Nucleoside-2',3'-cyclic phosphate nucleotidohydrolase. Enzymes that catalyze the hydrolysis of the 2'- or 3'- phosphate bonds of 2',3'-cyclic nucleotides. Also hydrolyzes nucleoside monophosphates. Registry number: EC 3.1.4.- (12 Dec 1998) |
| 3',5'-cyclic-nucleotide phosphodiesterase | <enzyme> An enzyme that catalyses the hydrolysis of cyclic AMP to form adenosine 5'-phosphate. The enzyme is widely distributed in animal tissue and controls the level of intracellular cyclic AMP. Also acts on 3',5'-cyclic imp and 3',5'-cyclic GMP. Chemical name: 3',5'-Cyclic-nucleotide 5'-nucleotidohydrolase Registry number: EC 3.1.4.17 (12 Dec 1998) |
| cyclic uridine 3',5'-monophosphate | A cyclic nucleotide involved in metabolic regulation; inhibits the growth of some tumours. (05 Mar 2000) |
| inosine-uridine hydrolase | <enzyme> From crithidia fasciculata; hydrolyzes the n-glycosidic bonds of purine and pyrimidine nucleosides Registry number: EC 3.2.2.- Synonym: inosine-uridine preferring nucleoside hydrolase, iu-nucleoside hydrolase (26 Jun 1999) |
| uridine | <biochemistry> The ribonucleoside formed by the combination of ribose and uracil. (18 Nov 1997) |
| uridine 5'-(alpha-D-galactopyranosyl pyrophosphate) NAD 2-hexosyl oxidoreductase | <enzyme> Converts udpgalactose (pyranose form) to 2-keto-galactose which rearranges to furanose form Chemical name: UDPgalactose nad 2-hexosyl oxidoreductase Registry number: EC 1.1.1.- (26 Jun 1999) |
| uridine 5'-diphosphate | A condensation product of uridine and pyrophosphoric acid. See: UDP. (05 Mar 2000) |
| uridine 5'-monophosphate | Uridine esterified by phosphoric acid on one or more sugar hydroxyl groups; UMP is typically uridine 5'-monophosphate; 2' and 3' derivatives also occur; precursor for the biosynthesis of other pyrimidine nucleotides. Synonym: UMP synthase, uridine 5'-monophosphate. Uridylic acid synthase, a bifunctional enzyme that contains the activities of both orotate phosphoribosyltransferase and orotidine-5'-monophosphate decarboxylase; catalyses a key step in pyrimidine biosynthesis; a deficiency of this enzyme leads to orotic aciduria. (05 Mar 2000) |