| carboxylic acids | Organic acids containing the carboxy (-cooh) group, including amino acids and fatty acids. Carboxylic acid is used both as a class name and a suffix. (12 Dec 1998) |
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| chrysanthemum-carboxylic acids | Cyclopropane carboxylic acids substituted in one position by two methyl groups, the other by 2-methyl-1-propenyl (chrysanthemum monocarboxylic acid) or by 3-methoxy-2-methyl-3-oxo-1-propenyl (chrysanthemum dicarboxylic acid methyl ester); these acids, esterified with allethrolone or pyrethrolone, are the allethrins and pyrethrins, respectively. (05 Mar 2000) |
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| activated carboxylic acid | Derivative of a carboxyl group that is more susceptible to nucleophilic attack than a free carboxyl group; e.g., acid anhydrides, thioesters. (05 Mar 2000) |
| carboxylic acid | An organic acid containing the functional group -COOH.Structurally, the group looks like: O=C- | OH (09 Oct 1997) |
| carboxylic acid ester | Specifically, an ester derived from a carboxylic acid and an alcohol; R-CO-R' (05 Mar 2000) |
| carboxylic acid reductase | <enzyme> Reduces double bonds in presence of hydrogen Registry number: EC 1.3.99.- (26 Jun 1999) |
| carboxylic ester hydrolases | <enzyme> Enzymes which catalyze the hydrolysis of carboxylic acid esters with the formation of an alcohol and a carboxylic acid anion. Registry number: EC 3.1.1 (12 Dec 1998) |
| dihdroxyindole-carboxylic acid oxidase | <enzyme> Converts 5,6-dihydroxyindole-2-carboxylic acid to melanochrome in premelanosomes; no further information on mechanism 6/95 Registry number: EC 1.- Synonym: dhica oxidase, dhi2c oxidase (26 Jun 1999) |
| uracil-6-carboxylic acid | Intermediate in the de novo synthesis of pyrimidines. Linked glycosidically to ribose 5' phosphate, orotate forms the pyrimidine nucleotide orotidylate, that on decarboxylation at position 5 of the pyrimidine ring yields the major nucleotide uridylate (uridine 5' phosphate). (18 Nov 1997) |
| 1-aminocyclopropane-1-carboxylic acid oxidase | <enzyme> The last enzyme in the ethylene pathway; converts aminocyclopropane-1-carboxylic acid + oxygen + ascorbate to ethylene + co2 + hcn + dehydroascorbate + 2h2o Registry number: EC 1.4.3.- Synonym: acc oxidase, 1-aminocyclopropane-1-carboxylate oxidase (26 Jun 1999) |
| 5-formyl-3-hydroxy-2-methylpyridine-4-carboxylic acid dehydrogenase | <enzyme> Nad+ dependent; from pseudomonas ma-1 grown on pyridoxine; involved in vitamin b6 degradation Registry number: EC 1.1.1.- Synonym: fhmpc dehydrogenase (26 Jun 1999) |
| 5-pyrrolidone-2-carboxylic acid | A keto derivative of proline that is formed nonenzymatically from glutamate, glutamine, and gamma-glutamylated peptides; it is also produced by the action of gamma-glutamylcyclotransferase; elevated levels of 5-oxoproline are often associated with problems of glutamine or glutathione metabolism. Synonym: 5-pyrrolidone-2-carboxylic acid, pyroglutamic acid, pyrrolidone-5-carboxylate. (05 Mar 2000) |
| acids, carbocyclic | Carboxylic acids that have a homocyclic ring structure in which all the ring atoms are carbon. (12 Dec 1998) |
| acids, heterocyclic | A class of acids containing a ring structure in which atleast one atom other than carbon is incorporated. (12 Dec 1998) |
| acids, noncarboxylic | Inorganic acids with a non metal, other than carbon, attached to hydrogen, or an acid radical containing no carbon. (12 Dec 1998) |
| acroleic acids | A series of unsaturated aliphatic acids of the general formula R==CH-COOH; the prototype, acrylic acid (R=CH2) or 2-propenoic acid, is derived from propionic acid by reduction or from glycerol by dehydration. Synonym: acroleic acids. (05 Mar 2000) |