| 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) |
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| 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 |
| phosphoric | 1. (Chem) Of or pertaining to phosphorus; resembling, or containing, from us; specifically, designating those compounds in which phosphorus has a higher valence as contrasted with the phosphorous compounds. 2. Phosphorescent. "A phosphoric sea." Glacial phosphoric acid. <chemistry> Phosphoric acid changed from acid (soluble) salts back to neutral or basic (insoluble) salts. Origin: Cf. F. Phosphorique. Source: Websters Dictionary (01 Mar 1998) |
| phosphoric acid | O==P(OH)3; Orthophosphoric acid;a strong acid of industrial importance; m.p. 42.35°C; dilute solutions have been used as urinary acidifiers and as dressings to remove necrotic debris. In dentistry, it comprises about 60% of the liquid used in zinc phosphate and silicate cements; solutions are used for conditioning enamel surfaces prior to applications of various types of resins. (05 Mar 2000) |
Synonyms : Pyrophosphate, Phosphoribosyl
Synonyms : AICAR Formyltransferase, AICAR Transformylase, AICARTFase, Aminoimidazolecarboxamide Ribonucleotide Transformylase, Formyltransferase, AICAR, Formyltransferase, Phosphoribosylaminoimidazolecarboxamide, Ribonucleotide Transformylase, Aminoimidazolecarboxamide
Synonyms : 2-Amino-N-Ribosylacetamide 5'-Phosphate Transformylase, 5'-Phosphoribosylglycinamide Transformylase, GAR Formyltransferase, GAR Transformylase, GARTFase, Glycinamide Ribonucleotide Transformylase, Glycinamideribotide Transformylase, Formyltransferase, GAR
Synonyms : Organophosphates, Organopyrophosphates, Acid Esters, Phosphoric, Esters, Phosphoric Acid, Organic Phosphates
Synonyms : Acids, Phosphoric, Acids, Pyrophosphoric
| phosphoric |
phosphorous: containing or characteristic of phosphorus; "phosphoric acid"
Ãâó: wordnet.princeton.edu/perl/webwn
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| phosphoriboisomerase |
ribose-5-phosphate isomerase.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| phosphoribosylamine |
an intermediate product in the synthesis of purines formed from phosphoribosylpyrophosphate and glutamine; excessive production is often a factor in primary gout.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| phosphoribosylpyrophosphate |
an intermediate in the formation of purines and of purine and pyrimidine nucleotides; abbreviated PRPP.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| phosphoribosylpyrophosphate synthetase |
ribose-phosphate pyrophosphokinase.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| phosphori | containing or characteristic of phosphorus |
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| phosphori | an acid used in fertilizers and soaps: H3PO4 |
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