| OAS | old age security; oral allergy syndrome; osmotically active substance |
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| OAW | oral airways |
| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
| OCA | oculocutaneous albinism; olivopontocerebellar atrophy; oral contraceptive agent |
| OCC | object-centered coordinate [method]; oral cholecystography |
| agaricinic acid | Alpha-Hexadecylcitric acid; 2-hydroxy-1,2,3-nonadecanetricarboxylic acid;obtained from agaric and responsible for the anhidrotic action of the mushroom; used as an anhidrotic agent. Synonym: agaricic acid, agaricinic acid. (05 Mar 2000) |
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| aklanonic acid methyl ester cyclase | <enzyme> Catalyses the formation of aklaviketone from aklanonic acid methyl ester; involved in daunomycin biosynthesis; see also daunorubicin-doxorubicin polyketide synthase Registry number: EC 5.- Synonym: aame cyclase, daud protein, daud gene product, dnrd protein, dnrd gene product (26 Jun 1999) |
| aklanonic acid methyltransferase | <enzyme> Catalyses the methyl esterification of aklanonic acid; involved in daunomycin biosynthesis; genbank l35154; see also daunorubicin-doxorubicin polyketide synthase Registry number: EC 2.1.1.- Synonym: dauc protein, dauc gene product, aamtase, dnrc protein, dnrc gene product (26 Jun 1999) |
| alcohol acid | A group of compounds that contain both the carboxyl and hydroxy radicals; e.g., glycolic acid. (05 Mar 2000) |
| aldaric acid | One of a group of sugar acids characterised by the formula HOOC-(CHOH)n-COOH; e.g., saccharic acid. (05 Mar 2000) |
| aldehydic acid | <biochemistry> Dicarboxylic acids in which one of the carboxyl groups (-cooh) has been replaced by an aldehyde group (-cho). (12 Dec 1998) |
| aldobiuronic acid | Condensation products of an aldose and a uronic acid; such groupings occur among the components of various mucopolysaccharides, notably hyaluronic acid. (05 Mar 2000) |
| allantoic acid | Diureidoacetic acid;a degradation product of allantoin. (05 Mar 2000) |
| allodeoxycholic acid | 3a,12alpha-dihydroxy-5alpha-cholan-24-oic acid, one of the bile acids. (05 Mar 2000) |
| allomaleic acid | Trans-Butanedioic acid;an unsaturated dicarboxylic acid occurring as an intermediate in the tricarboxylic acid cycle. Synonym: allomaleic acid. (05 Mar 2000) |
| allophanic acid | NH2CONHCOOH; urea carbonic acid;its amide is biuret (allophanamide). Synonym: carbamoylcarbamic acid, N-carboxyurea. (05 Mar 2000) |
| alpha-acetolactic acid | An intermediate in pyruvic acid catabolism and valine biosynthesis; CH3COC(OH)(CH3)-COOH. (05 Mar 2000) |
| alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | <chemical> Alpha-amino-2,3-dihydro-5-methyl-3-oxo-4-isoxazolepropanoic acid. An ibotenic acid homolog and glutamate agonist. The compound is the defining agonist for the ampa subtype of glutamate receptors (receptors, ampa). It has been used as a radionuclide imaging agent but is more commonly used as an experimental tool in cell biological studies. Pharmacological action: excitatory amino acid agonists. Chemical name: 4-Isoxazolepropanoic acid, alpha-amino-2,3-dihydro-5-methyl-3-oxo- (12 Dec 1998) |
| alpha-amino acid | Typically, an amino acid of the general formula R-CHNH2-COOH (i.e., the NH2 in the a position); the l forms of these are the hydrolysis products of proteins. In rarer usages, this class of molecules also includes alpha-amino phosphoric acids and alpha-aminosulfonic acids. (05 Mar 2000) |
| alpha-amino acid esterase | <enzyme> Converts alpha-amino acid esters and water to alpha-amino acids and alcohol Registry number: EC 3.1.1.43 Synonym: alpha-amino acid ester hydrolase (26 Jun 1999) |