| phosphoglycerate kinase | <enzyme> An enzyme catalyzing the transfer of a phosphate group from 3-phospho-d-glycerate in the presence of ATP to yield 3-phospho-d-glyceroyl phosphate and ADP. Chemical name: ATP-3-phospho-D-glycerate 1-phosphotransferase Registry number: EC 2.7.2.3 (12 Dec 1998) |
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| phosphoglycerate mutase | <enzyme> An enzyme that catalyses the conversion of 2-phospho-d-glycerate to 3-phospho-d-glycerate. Chemical name: D-Phosphoglycerate 2,3-phosphomutase Registry number: EC 5.4.2.1 (12 Dec 1998) |
| phosphoglycerate permease | <chemical> (26 Jun 1999) |
| phosphoglyceric acid | 1. HOCH2-CH(OH)CO-OPO3H2; glyceroyl phosphoric acid; glyceroyl phosphate;an acid anhydride between glyceric acid and phosphoric acid. 2. HOCH2-CH(OPO3H2) COOH; 2-phosphoglyceric acid;the deprotonated form, 2-phosphoglycerate, is an intermediate in glycolysis. 3. H2O3POCH2-CH (OH)COOH; 3-phosphoglyceric acid;the deprotonated form, 3-phosphoglycerate, is an intermediate in glycolysis. (05 Mar 2000) |
| phosphoglycerides | Acylglycerol and diacylglycerol phosphates;constituents of nerve tissue, and involved in fat transport and storage. (05 Mar 2000) |
| phosphoglyceromutase | An isomerizing enzyme catalyzing the reversible interconversion of 2-phosphoglycerate and 3-phosphoglycerate with 2,3-bisphosphoglycerate present as a cofactor; a deficiency of this enzyme, which plays a role in glycolysis, is an inherited disorder that results in an intolerance for strenuous exercise. (05 Mar 2000) |
| phosphoheptose isomerase | <enzyme> Sedoheptulose-7-p is converted to d-glycero-d-manno-heptulose Registry number: EC 5.3.1.- (26 Jun 1999) |
| phosphohexokinase | <enzyme> An enzyme that catalyses the conversion of a nucleotide triphosphate and a sugar phosphate to a nucleotide diphosphate and a sugar diphosphate. D-fructose 6-phosphate, d-tagatose 6-phosphate, and sedoheptulose 7-phosphate can act as acceptors; ATP, utp, ctp, and itp can act as donors. A deficiency of this enzyme is the cause of glycogen storage disease type vii. Chemical name: ATP:D-fructose-6-phosphate 6-phosphotransferase Registry number: EC 2.7.1.11 (12 Dec 1998) |
| phosphohexomutase | <enzyme> An enzyme that catalyses the reversible interconversion of d-fructose 6-phosphate and d-glucose-6-phosphate; a part of glycolysis and gluconeogenesis; glucosephosphate isomerase deficiency is an inherited disorder resulting in liver glycogenesis and haemolytic anaemia. Synonym: hexosephosphate isomerase, phosphohexomutase, phosphohexose isomerase. (05 Mar 2000) |
| phosphohexose isomerase | <enzyme> An enzyme that catalyses the reversible interconversion of d-fructose 6-phosphate and d-glucose-6-phosphate; a part of glycolysis and gluconeogenesis; glucosephosphate isomerase deficiency is an inherited disorder resulting in liver glycogenesis and haemolytic anaemia. Synonym: hexosephosphate isomerase, phosphohexomutase, phosphohexose isomerase. (05 Mar 2000) |
| phosphohexose isomerase deficiency | <enzyme> An enzyme deficiency characterised by chronic nonspherocytic haemolytic anaemia; autosomal recessive inheritance. Synonym: phosphohexose isomerase deficiency. (05 Mar 2000) |
| phosphohydrolases | Phosphoric monoester hydrolases;enzymes (EC sub-subclass 3.1.3) cleaving phosphoric acid (as orthophosphate) from its esters; trivial names usually end in phosphate. (05 Mar 2000) |
| phosphoinositide | <biochemistry> A phosphatidic acid combined with inositol found in biomembranes and a precursor to certain cellular signals. Sometimes referred to as inositide. It is a very important minor phospholipid in eukaryotes, involved in signal transduction processes. Contains myo inositol linked through the 1 hydroxyl group to phosphatidic acid. The 4 phosphate (PIP) and 4, 5 bisphosphate derivatives PIP2) are formed and broken down in membranes by the action of specific kinases and phosphatases (futile cycles). Signal sensitive phospholipase C enzymes remove the inositol moiety, in particular from 1,4,5 trisphosphate (PIP2) as inositol 1,4,5 triphosphate (Ins P3: IP3). Both the diacyl glycerol and products act as second messengers. Synonym: phosphoinositide. (20 Sep 2002) |
| phosphokinase | A phosphotransferase or a kinase. (05 Mar 2000) |
| phospholamban kinase | <enzyme> A delta-cam kinase isozyme; catalyses the phosphorylation of phospholamban Registry number: EC 2.7.1.- Synonym: phospholamban sarcoplasmic reticulum calmodulin-dependent protein kinase, phospholamban srcam kinase (26 Jun 1999) |