| pyruvate dehydrogenase (lipoamide) | An oxidoreductase catalyzing conversion of pyruvate and (oxidised) lipoamide to CO2 and S6-acetyldihydrolipoamide in two successive reactions: the first between pyruvate and thiamin pyrophosphate to yield CO2 and alpha-hydroxyethylthiamin pyrophosphate (active pyruvate); the second between the last named and lipoamide to regain the thiamin pyrophosphate and yield S6-acetylhydrolipoamide. Compare: alpha-ketodecarboxylase. (05 Mar 2000) |
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| pyruvate dehydrogenase (lipoamide)-phosphatase | <enzyme> (pyruvate dehydrogenase (lipoamide))-phosphate phosphohydrolase. A mitochondrial enzyme that catalyses the hydrolytic removal of a phosphate on a specific seryl hydroxyl group of pyruvate dehydrogenase, reactivating the enzyme complex. Registry number: EC 3.1.3.43 (12 Dec 1998) |
| pyruvate-formate-lyase-deactivase | <chemical> Encoded by adhe gene product from E coli; pfla (radical form) yields pfl (non-radical form) in presence of fe++, nad and CoA and the multienzyme complex consisting of alcohol plus acetaldehyde-CoA dehydrogenase activities Synonym: pfl-deactivase, adhe multienzyme, adhe gene product (26 Jun 1999) |
| pyruvate kinase | <enzyme> ATP:pyruvate 2-o-phosphotransferase. A phosphotransferase that catalyses reversibly the phosphorylation of pyruvate to phosphoenolpyruvate in the presence of ATP. It has four isozymes (l, r, m1, and m2). Deficiency of the enzyme results in haemolytic anaemia. Registry number: EC 2.7.1.40 (12 Dec 1998) |
| pyruvate kinase deficiency | A disorder in which there is a deficiency of pyruvate kinase in red blood cells; characterised by haemolytic anaemia varying in degree from one patient to another; autosomal recessive inheritance. (05 Mar 2000) |
| pyruvate kinase phosphatase | <enzyme> Reactivates pyruvate kinase Registry number: EC 3.1.3.- (26 Jun 1999) |
| pyruvate metabolism, inborn errors | Hereditary disorders of pyruvate metabolism. They are difficult to diagnose and describe because pyruvate is a key intermediate in glycolysis, gluconeogenesis, and the tricarboxylic acid cycle. Some inherited metabolic disorders may alter pyruvate metabolism indirectly. Disorders in pyruvate metabolism appear to lead to deficiencies in neurotransmitter synthesis and, consequently, to nervous system disorders. (12 Dec 1998) |
| pyruvate, orthophosphate dikinase | <enzyme> An enzyme that catalyses the reaction of ATP, pyruvate, and orthophosphate to form AMP plus phosphoenolpyruvate plus pyrophosphate. Chemical name: ATP:pyruvate, orthophosphate phosphotransferase Registry number: EC 2.7.9.1 (12 Dec 1998) |
| pyruvate oxidase | <enzyme> Registry number: EC 1.2.3.3 (12 Dec 1998) |
| pyruvate oxidation factor | <biochemistry> 1,2 dithiolane 3 valeric acid. Regarded as a coenzyme in the oxoglutarate dehydrogenase complex of the citric acid cycle. Involved generally in oxidative decarboxylations of _ keto acids. A growth factor for some organisms. (18 Nov 1997) |
| enol pyruvate | CH2==C(OH)-COO-un, the form of pyruvate encountered in the biologically important phosphoenolpyruvate (enol pyruvate phosphate), not in the free form. (05 Mar 2000) |
| ketal pyruvate transferase | <enzyme> Involves the transfer of the pyruvyl residue from phosphoenolpyruvate to the external mannose of pentasaccharide diphosphate lipid Registry number: EC 2.3.1.- (26 Jun 1999) |
| kynurenine-pyruvate aminotransferase | <enzyme> Found in rat kidney and brain; forms kynurenic acid from kynurenine; pyruvate, 2-keto-n-valerate, 2-keto-n-caproate, 2-keto-isocaproate and oxaloacetate are good acceptors Registry number: EC 2.6.1.- (26 Jun 1999) |
| (pyruvate dehydrogenase (lipoamide))kinase | Registry number: EC 2.7.1.99 Synonym: pyruvate dehydrogenase kinase (26 Jun 1999) |
| active | Characterised by action, not passive, not expectant. (18 Nov 1997) |