| GHB | gamma hydroxybutyrate (also known as: liquid x; Georgia home boy; Goop; gamma-oh; and grievous bodil... |
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| GLC | gas-liquid chromatography |
| GLC-MS | gas-liquid chromatography-mass spectrometry |
| HPLAC | high-pressure liquid-affinity chromatography |
| HSLC | high-speed liquid chromatography |
| glucose | <biochemistry> D glucose, a monosaccharide (hexose), C6H12O6, found in certain foodstuffs, especially fruits and in the normal blood of all animals. It is the end product of carbohydrate metabolism and is the chief source of energy for living organisms, its utilisation being controlled by insulin. Excess glucose is converted to glycogen and stored in the liver and muscles for use as needed and, beyond that, is converted to fat and stored as adipose tissue. Glucose appears in the urine in diabetes mellitus. Synonym: dextrose. Origin: Gr. Gleukos = sweetness, glykys = sweet (14 Oct 1997) |
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| glucose 1,6-bisphosphate synthase | <enzyme> Glycerate-1,3-p(2) + glucose -1-p yields glycerate-p + glucose-1,6-p(2) Chemical name: glucose 1,6-diphosphate synthase Registry number: EC 2.7.1.106 (26 Jun 1999) |
| glucose-1-fructose-2-oxidoreductase | <enzyme> Catalyses intermolecular oxidation-reduction of glucose and fructose to form gluconolactone and sorbitol; contains tightly bound nadp as h+ carrier; does not require added cofactor Registry number: EC 1.1.1.- (26 Jun 1999) |
| glucose-1-phosphatase | <enzyme> Catalyses the conversion of d-glucose 1-phosphate and water to d-glucose and orthophosphate Registry number: EC 3.1.3.10 Synonym: agp gene product (26 Jun 1999) |
| glucose 1-phosphate | <biochemistry> Product of glycogen breakdown by phosphorylase. Converted to glucose 6 phosphate by phosphoglucomutase. (18 Nov 1997) |
| glucose-1-phosphate adenylyltransferase | <enzyme> Shrunken-2 (sh2) protein is a subunit of this enzyme Registry number: EC 2.7.7.27 Synonym: adpg synthetase, adpglucose pyrophosphorylase, ADP-glucose synthetase, shrunken-2 protein, shrunken gene product, ADP-glucose pyrophosphorylase, glgc gene product, bt2 gene product, brittle-2 gene product (26 Jun 1999) |
| glucose-1-phosphate kinase | <enzyme> An enzyme that, in the presence of ATP, catalyses the phosphorylation of d-glucose 1-phosphate to form d-glucose 1,6-bisphosphate and ADP; found in yeast and muscle; d-glucose 1,6-bisphosphate is a required cofactor of one of the enzymes in glycogenolysis. Synonym: glucose-1-phosphate kinase. (05 Mar 2000) |
| glucose-1-phosphate phosphodismutase | A phosphotransferase catalyzing the reversible transfer of a phosphate residue from one d-glucose 1-phosphate to another, yielding d-glucose 1,6-bisphosphate and d-glucose. This enzyme provides a crucial intermediate needed for glucose-phosphate isomerase. (05 Mar 2000) |
| glucose-1-phosphate uridylyltransferase | <enzyme> An enzyme that activates d-glucose by reacting d-glucose 1-phosphate with UTP, producing pyrophosphate and UDP glucose; a crucial step in glycogen biosynthesis. (05 Mar 2000) |
| glucose-1-phospho-D-mannosylglycoprotein phosphodiesterase | <enzyme> Removes the glucose-1-phosphate from glc-alpha-1-p-6-mannose residues in glycoproteins as a unit; pH optimum 7.5 Registry number: EC 3.1.4.51 Synonym: ag1p phosphodiesterase, alpha-glucose-1-phosphate phosphodiesterase (26 Jun 1999) |
| glucose-3-phosphatase | <enzyme> From rat liver; has glucose-3-phosphate hydrolytic activity Registry number: EC 3.1.3.- (26 Jun 1999) |
| glucose-6-dehydrogenase deficiency | <biochemistry> An inherited condition that results in a deficiency in glucose-6-phosphate dehydrogenase. Particular drugs (sulphonamides) can exacerbate this problem. The result is haemolytic anaemia. (27 Sep 1997) |
| glucose-6-phosphatase | <enzyme> An enzyme that catalyses the conversion of d-glucose-6-phosphate and water to d-glucose and orthophosphate. This enzyme is deficient in glycogen storage disease Ia. Chemical name: D-Glucose-6-phosphate phosphohydrolase Registry number: EC 3.1.3.9 (12 Dec 1998) |
| glucose-6-phosphatase hepatorenal glycogenosis | Glycogenosis due to glucose-6-phosphatase deficiency, resulting in accumulation of excessive amounts of glycogen of normal chemical structure, particularly in liver and kidney. Synonym: Gierke's disease, glucose-6-phosphatase hepatorenal glycogenosis, von Gierke's disease. (05 Mar 2000) |
| glucose-6-phosphate | <biochemistry> Glucose 6-phosphate is a phosphomonoester of glucose that is formed by transfer of phosphate from ATP, catalysed by the enzyme hexokinase. It is an intermediate both of the glycolytic pathway (next converted to fructose 6 phosphate) and of the NADPH generating pentose phosphate pathway, formed from glucose via hexokinase. However it is not strictly a glycolytic intermediate and it is readily converted to glycogen or oxidized to NADPH. (10 Oct 1997) |