| phosphorescent | Having the property of phosphorescence. (05 Mar 2000) |
|---|---|
| phosphorhidrosis | The excretion of luminous sweat. Synonym: phosphoridrosis. Origin: G. Phos, light, + phoros, bearing, + hidrosis, sweating (05 Mar 2000) |
| phosphoriboisomerase | <enzyme> An enzyme catalyzing interconversion of d-ribose 5-phosphate and d-ribulose 5-phosphate; of importance in ribose metabolism and in the pentose phosphate pathway. Synonym: phosphopentose isomerase, phosphoriboisomerase. (05 Mar 2000) |
| phosphoribomutase | <enzyme> Converts ribose-1-phosphate to ribose-5-phosphate Registry number: EC 2.7.5.- (26 Jun 1999) |
| phosphoribosyl pyrophosphate | <chemical> The key substance in the biosynthesis of histidine, tryptophan, and purine and pyrimidine nucleotides. Chemical name: alpha-D-Ribofuranose, 5-(dihydrogen phosphate) 1-(trihydrogen diphosphate) (12 Dec 1998) |
| phosphoribosylaminoimidazolecarboxamide formyltransferase | <enzyme> Chemical name: 5-amino-4-imidazolecarboxamide ribotide transformylase Registry number: EC 2.1.2.3 Synonym: aicar transformylase, aicar formyltransferase, aicartfase, aminoimidazolecarboxamide ribonucleotide transformylase (26 Jun 1999) |
| phosphoribosylaminopyrimidine deaminase | <enzyme> Intermediate in riboflavin biosynthesis Chemical name: 2,5-diamino-6-oxy-4-(5'-phosphoribosylamino) pyrimidine deaminase Registry number: EC 3.5.4.- (26 Jun 1999) |
| phosphoribosylaminopyrimidine reductase | <enzyme> Intermediate in riboflavin biosynthesis; converts ribosephosphate to ribitolphosphate Chemical name: 5-amino-2,6-dioxy-4-(5'-phosphoribosylamino) pyrimidine reductase Registry number: EC 1.1.1.- (26 Jun 1999) |
| phosphoribosylanthranilate isomerase | <enzyme> Forms 1-(2-carboxyphenylamino)-1-deoxyribulose 5-phosphate; trpf from pseudomonas aeruginosa Registry number: EC 5.3.1.24 Synonym: pra isomerase, prai, n-5'-phosphoribosylanthranilate isomerase, n-(5-phospho-beta-d-ribosyl)anthranilate ketol-isomerase, n-(5'-phosphoribosyl)anthranilate isomerase, trpf gene product (26 Jun 1999) |
| phosphoribosylanthranilate isomerase-indoleglycerol-phosphate synthase | <chemical> EC 5.3.1.24 plus EC 4.1.1.48 Synonym: pai-igps, indoleglycerol phosphate synthase-phosphoribosyl anthranilate isomerase, prai-igps (26 Jun 1999) |
| phosphoribosylformylglycinamidine synthetase | <enzyme> Involved in purine nucleotide biosynthesis; fgam synthase I contains the glutamine amide transfer domain and fgam synthase II contains the aminator domain of fgam synthase Chemical name: 2-formamido-n-ribosylacetamide 5'-phosphate l-glutamine amido-ligase (adenosine diphosphate) Registry number: EC 6.3.5.3 Synonym: formylglycineamide ribonucleotide amidotransferase, fgar amidotransferase, fgam synthetase, fgar synthetase, fgam synthase, fgam synthase I, fgam synthase II, 5'-phosphoribosyl-n-formylglycinamide amidotransferase (26 Jun 1999) |
| phosphoribosylglycineamide synthetase | Glycinamide ribonucleotide synthetase;an enzyme that reacts glycine with ribosylamine 5-phosphate and ATP to form ADP, orthophosphate, and phosphoribosylglycineamide in the course of purine biosynthesis. (05 Mar 2000) |
| phosphoribosyltransferase | One of a group of enzymes (EC sub-subclass 2.4.2, pentosyltransferases) that transfers d-ribose 5-phosphate from 5-phospho-alpha-d-ribosyl pyrophosphate to a purine, pyrimidine, or pyridine acceptor, forming a 5'-nucleotide and inorganic pyrophosphate, or d-ribose from d-ribosyl phosphate to a base, forming a nucleoside, or similar pentose transfers; important in nucleotide biosynthesis. Specific phosphoribosyltransferases are preceded by the name of the acceptor base, e.g., uracil phosphoribosyltransferase (i.e., uracil + PRPP &dblarr; UMP + pyrophosphate). (05 Mar 2000) |
| phosphoribulokinase | <enzyme> An enzyme that, in the presence of ATP, catalyses the phosphorylation of d-ribulose 5-phosphate to d-ribulose 1,5-bisphosphate and ADP, a reaction of importance in the carbon dioxide fixation cycle of photosynthesis. (05 Mar 2000) |
| phosphoribulose epimerase | ribulose-phosphate 3-epimerase |