| G | Guanine, one member of the base pair G-C (guanine-cytosine) in DNA. (12 Dec 1998) |
|---|---|
| G acid | 2-Naphthol-6,8-disulfonic acid. (05 Mar 2000) |
| G actin | <protein> A short polypeptide chain of 375 amino acids which is the monomeric unit of the protein actin (one of the two proteins involved in muscle contraction). Many units of G actin join together in a polymer to make an actin filament. (09 Oct 1997) |
| G antigen | An antigenic glycoprotein frequently associated with viral surfaces. Origin: Ger. Gebundenes, bound (05 Mar 2000) |
| G cell | <gastroenterology, pathology> Endocrine cells found in the pyloric gland mucosa (antral mucosa) of the stomach and responsible for the secretion of gastrin. (12 Dec 1998) |
| G deamidase | <enzyme> Mw 81 kD; a chymotrypsin-like serine carboxypeptidase; responsible for the degradation of antagonist g Registry number: EC 3.4.16.- Synonym: g-deamidase (26 Jun 1999) |
| G factor | The single common variance or factor that is common to (i.e., empirically intercorrelates with) different intelligence tests (general). A substance required for the growth of a specific organism. (05 Mar 2000) |
| G force | Inertial force produced by accelerations or gravity, expressed in gravitational units; one G is equal to the pull of gravity at the earth's surface at sea level and 45 |
| g haemolysis | A term sometimes used to indicate that there is no haemolysis in relation to bacterial colonies in or on blood agar; thus, nonhemolytic organisms may be referred to as producing g haemolysis. (05 Mar 2000) |
| g loop | <molecular biology, virology> A loop of unpaired strands of DNA from the G region of the genome of the bacteriophage mu. This loop appears after the DNA has been extracted from the bacteriophage, denatured, and then renatured. (14 Oct 1997) |
| G suit | <physiology> Double-layered inflatable suits which, when inflated, exert pressure on the lower part of the wearer's body. The suits are used to improve or stabilise the circulatory state, i.e., to prevent hypotension, control haemorrhage, and regulate blood pressure. The suits are also used by pilots under positive acceleration. (12 Dec 1998) |
| G syndrome | A syndrome of characteristic facies associated with hypospadias, ventral curvature of the penis, and dysphagia. Apparently the same as the BBB syndrome of Opritz et al. Autosomal dominant inheritance. Origin: first letter of surname of affected person reported (05 Mar 2000) |
| g(m1) ganglioside | <chemical> Galactosyl-n-acetylgalactosaminyl-(n-acetylneuraminyl)- galactosyl-glucosylceramide. Ganglioside present in abnormally large amounts in neurons and in elevated levels in liver and kidney due to a deficiency of beta-galactosidase in the genetically determined disease gm1-gangliosidosis. Chemical name: Ganglioside GM1 (12 Dec 1998) |
| g(m2) ganglioside | <chemical> N-acetylgalactosaminyl-galactosyl-(n-acetylneuraminyl)-glucosyl-ceramide. This is the defective ganglioside manifested in tay-sachs disease and sandhoff disease. Chemical name: Ganglioside GM2 (12 Dec 1998) |
| g(m3) ganglioside | N-acetylneuraminyl-galactosyl-glucosylceramide. This ganglioside is present in abnormally large amounts in the brain and liver due to a deficient biosynthetic enzyme, g(m3):udp-n-acetylgalactosaminyltransferase. Deficiency of this enzyme prevents the formation of g(m2) ganglioside from g(m3) ganglioside and is the cause of an anabolic sphingolipidosis. (12 Dec 1998) |