| PCK | phosphoenolpyruvate carboxykinase; polycystic kidney |
|---|---|
| PEPCK | phosphoenolpyruvate carboxykinase |
| GTP | Guanosine Tri-Phosphate |
| GTP | glutamyl transpeptidase; guanosine triphosphate |
| PEP | peptidase; phospho(enol)pyruvate; peer evaluation program; phosphoenolpyruvate; pigmentation, edema,... |
| PCK | Phosphoenolpyruvate carboxykinase |
|---|---|
| GTP-CH | GTP cyclohydrolase I |
| PEPCK | P-enolpyruvate carboxykinase |
| PEPCK | Phospho enolpyruvate carboxykinase |
| PEP | 2-phosphoenolpyruvate |
| phosphoenolpyruvate carboxykinase (GTP) | <enzyme> An enzyme of the lyase class that catalyses the conversion of GTP and oxaloacetate to GDP, phosphoenolpyruvate, and carbon dioxide. This reaction is part of gluconeogenesis in the liver. The enzyme occurs in both the mitochondria and cytosol of mammalian liver. Chemical name: GTP:oxaloacetate carboxy-lyase (transphosphorylating) Registry number: EC 4.1.1.32 (12 Dec 1998) |
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| phosphoenolpyruvate carboxykinase | phosphoenolpyruvic acid carboxykinase |
|---|---|
| phosphoenolpyruvate carboxykinase (ATP) | <enzyme> An enzyme of the lyase class that catalyses the conversion of ATP and oxaloacetate to ADP, phosphoenolpyruvate, and carbon dioxide. The enzyme is found in some bacteria, yeast, and trypanosoma, and is important for the photosynthetic assimilation of carbon dioxide in some plants. Chemical name: ATP:oxaloacetate carboxy-lyase (transphosphorylating) Registry number: EC 4.1.1.49 (12 Dec 1998) |
| GTP | An immediate precursor of guanine nucleotides in RNA; similar to ATP; has a crucial role in microtubule formation. GTP cyclohydrolase, an enzyme that catalyses the reaction of GTP and H2O forming formate and a precursor of tetrahydrobiopterin; a deficiency of this enzyme will result in one form of malignant hyperphenylalaninaemia. Acronym: GTP (05 Mar 2000) |
| GTP-binding protein | <molecular biology, protein> There are two main classes of G-proteins, the heterotrimeric G proteins that associate with receptors of the seven transmembrane domain superfamily and are involved in signal transduction and the small cytoplasmic G-proteins. Regulatory proteins found in all cells. They are versatile molecular switches, involved in the control of a wide range of biological processes - protein synthesis, signal transduction pathways, growth and differentiation. They all act through a common molecular mechanism based on their ability to bind the guanine nucleotides GTP and GDP selectively and with high affinity. Stimulatory G-proteins are permanently activated by cholera toxin, inhibitory ones by pertussis toxin. Transducin was one of the first of the heterotrimeric G-proteins to be identified. The small G-proteins are a diverse group of monomeric GTPases that include ras, rab, rac and rho and that play an important part in regulating many intracellular processes including cytoskeletal organisation and secretion. Their GTPase activity is regulated by activators (GAPs) and inhibitors (GIPs) that determine the duration of the active state. (12 Jul 2000) |
| GTP cyclohydrolase | <enzyme> (GTP cyclohydrolase I) or GTP 7,8-8,9-dihydrolase (pyrophosphate-forming) (GTP cyclohydrolase II). An enzyme group that hydrolyzes the imidazole ring of GTP, releasing carbon-8 as formate. Two c-n bonds are hydrolyzed and the pentase unit is isomerised. This is the first step in the synthesis of folic acid from GTP.6 (GTP cyclohydrolase I) and GTP cyclohydrolase II. Chemical name: GTP 7,8-8,9-dihydrolase Registry number: EC 3.5.4.16 (12 Dec 1998) |
| GTP phosphohydrolase | <enzyme> An enzyme that hydrolyzes GTP to GDP and provides energy for peptide chain elongation. Registry number: EC 3.6.1.- (12 Dec 1998) |
| GTP pyrophosphokinase | <enzyme> An enzyme that catalyses reversibly the transfer of a pyrophosphate group from ATP to the 3'-oh group of GDP or GTP with the formation of guanosine 3'-diphosphate 5'-diphosphate or guanosine 3'-diphosphate 5'-triphosphate and AMP. The enzyme, also called stringent factor, is located in the rela gene in stringent strains of bacteria. The above synthesis is induced by mRNA and uncharged trna which is bound to the aminoacyl-t-RNA binding site of the ribosome by a codon-specific association. Chemical name: ATP:GTP 3'-pyrophosphotransferase Registry number: EC 2.7.6.5 (12 Dec 1998) |
| GTP-RNA guanylyltransferase | <enzyme> Catalyses addition of GMP residue to 3'-ends of oligonucleotide primers Registry number: EC 2.7.7.- Synonym: terminal guanylyltransferase (26 Jun 1999) |
| transducin GTP phosphohydrolase | <enzyme> Stimulated by bovine rhodopsin mutants (asp63 to asn) and (glu134 to gln) with slightly lowered efficiency Registry number: EC 3.6.1.- Synonym: transducin GTPase (26 Jun 1999) |
| phosphoenolpyruvate | <biochemistry> An important metabolic intermediate. The enol (less stable) form of pyruvic acid is trapped as its phosphate ester, giving the molecule a high phosphate transfer potential. Formed from 2 phosphoglycerate by the action of enolase. (31 Dec 1997) |
| phosphoenolpyruvate carboxylase | <enzyme> An enzyme with high affinity for carbon dioxide. It catalyses irreversibly the formation of oxaloacetate from phosphoenolpyruvate and carbon dioxide. This fixation of carbon dioxide in several bacteria and some plants is the first step in the biosynthesis of glucose. Chemical name: Orthophosphate:oxaloacetate carboxy-lyase (phosphorylating) Registry number: EC 4.1.1.31 (12 Dec 1998) |
| phosphoenolpyruvate carboxylase kinase | <enzyme> From bryophyllum fedtschenkoi plant and maise; phosphorylates phosphoenolpyruvate carboxylase on serine near the n-terminus; activity controlled by circadian rhythms Registry number: EC 2.7.10.- Synonym: pep carboxylase kinase, pepc kinase (26 Jun 1999) |
| phosphoenolpyruvate-cellobiose phosphotransferase | <enzyme> Catalytic domain of the phosphoenolpyruvate-dependent cellulose phosphotransferase system Registry number: EC 2.7.1.- Synonym: enzyme IIb(cellobiose), enzyme IIb (cel) (26 Jun 1999) |
| phosphoenolpyruvate-glucose phosphotransferase | <enzyme> Specific for glucose and nonmetabolizable analogs methyl alpha glucoside, beta-d-thioglucose and 5-thioglucose Registry number: EC 2.7.1.- Synonym: II-b(glc) peppts, enzyme II-b(glc) phosphoenolpyruvate phosphotransferase system, enzyme II (glucose), glucose-specific permease, phosphotransferase system, beta-glucosidase permease, beta-glucoside permease, glucose permease, enzyme II(glc), bglp gene product, syta gene product (26 Jun 1999) |
| phosphoenolpyruvate-maltose phosphotransferase | <enzyme> Partial amino acid sequence of enzyme identified from fusobacterium mortiferum. Registry number: EC 2.7.1.- Synonym: enzyme IIb (maltose), maltose enzyme IIb, malb gene product (26 Jun 1999) |
Synonyms : GTP-Dependent Phosphoenolpyruvate Carboxykinase, Carboxykinase, GTP-Dependent Phosphoenolpyruvate, GTP Dependent Phosphoenolpyruvate Carboxykinase, Phosphoenolpyruvate Carboxykinase, GTP-Dependent
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