| TBA | tertiary butylacetate; testosterone-binding affinity; tetrabutylammonium; thiobarbituric acid; to be... |
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| TFA | total fatty acids; transverse fascicular area; triangular fibrocartilage; trifluoroacetic acid |
| TSBA | total serum bile acids |
| 5-HIAA | 5-Hydroxy-Indole-Acetic Acid |
| 5-HT | 5-Hydroxy-Tryptamine = Serotonin |
| 15-hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic acid | <chemical> A stable prostaglandin endoperoxide analog which serves as a thromboxane mimetic. Its actions include mimicking the hydro-osmotic effect of vasopressin and activation of phospholipase c. Pharmacological action: vasoconstrictor agents. Chemical name: 5-Heptenoic Acid, 7-(6-(3-Hydroxy-1-Ocentyl)-2-Oxabicyclo(2.2.1)hept-5-yl)-, (1R-(1alpha,4alpha,5 beta(Z),6alpha(1E,3S*)))- (12 Dec 1998) |
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| 2,5-diamino-6-hydroxy-4-ribosylaminopyrimidine-5'-phosphate reductase | <enzyme> Nadp-dependent; forms 2,5-diamino-6-hydroxy-4-ribitylaminopyrimidine-5'-phosphate; intermediate in riboflavin biosynthesis Registry number: EC 1.1.1.- Synonym: dahrampp reductase, 2,5-diamino-4-oxy-6-ribosylaminopyrimidine-5'-phosphate reductase (26 Jun 1999) |
| 2-hydroxy-3-carboxy-6-oxo-7-methylocta-2,4-dienoate decarboxylase | <enzyme> Catalyses conversion of 2-hydroxy-3-carboxy-6-oxo-7-methylocta-2,4-dienoate to 2-hydroxy-6-oxo-7-methylocta-2,4-dienoate; enzyme d of p-cumate catabolic pathway in pseudomonas putida Registry number: EC 4.1.1.- Synonym: cmtd gene product (26 Jun 1999) |
| 2-hydroxy-3-oxoadipate synthase | <enzyme> Deficient in hyperoxaluria type i Registry number: EC 4.1.3.15 Synonym: 2-ketoglutarate-glyoxylate carboligase, glyoxylate-oxoglutarate carboligase, delta-hydroxylaevulinate synthase, 2-oxoglutarate-glyoxylate carboligase, 2-hydroxy-3-oxoadipate carboxylase (26 Jun 1999) |
| 2-hydroxy-3-oxopropionate reductase | <enzyme> Catalyses reversibly the reduction of glycerate to 2-hydroxy-3-oxopropanate in the presence of nad(p+) Registry number: EC 1.1.1.60 Synonym: tartronate saemialdehyde reductase, tsa reductase (26 Jun 1999) |
| 2-hydroxy-4-carboxymucconate-6-saemialdehyde dehydrogenase | <enzyme> Catalyses alpha-hydroxy-gamma-carboxymuconic-epsilon-saemialdehyde to alpha-hydroxy-gamma-carboxymuconic acid Registry number: EC 1.2.1.45 Synonym: alpha-hydroxy-gamma-carboxymuconic-epsilon-saemialdehyde dehydrogenase, chms dehydrogenase (26 Jun 1999) |
| 2-hydroxy-5-nitrobenzyl bromide | <chemical> 2-(bromomethyl)-5-nitrophenol. A chemical reagent that reacts with and modifies chemically the tryptophan portion of protein molecules. Used for 'active site' enzyme studies and other protein studies. Sometimes referred to as koshland's reagent. Pharmacological action: indicators and reagents. Chemical name: Phenol, 2-(bromomethyl)-4-nitro- (12 Dec 1998) |
| 2-hydroxy-6-oxo-2,4-heptadienoate hydrolase | <enzyme> Above cpd hydrolyzed to 2-oxopent-4-enoate (2-hydroxypenta-2,4-dienoate); enzyme e of p-cumate catabolic pathway in pseudomonas putida Registry number: EC 3.7.- Synonym: hodh hydrolase, 2-hydroxy-6-oxohepta-2,4-dienoate hydrolase, cmte gene product (26 Jun 1999) |
| 2-hydroxy-isonicotinic acid hydroxylase | <enzyme> Forms 2,6-dihydroxy-isonicotinic acid (citrazinic acid); contains iron and a flavin; incorporates hydroxyl group of water Registry number: EC 1.- Synonym: hinah (26 Jun 1999) |
| 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase | <enzyme> E coli enzyme; catalyses formation of 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate from 2-ketoglutarate and isochorismate; requires thiamine pyrophosphate and liberates pyruvate from the isochorismate molecule; see also o-succinylbenzoate synthase Registry number: EC 4.1.3.- Synonym: shchc synthase (26 Jun 1999) |
| 3a-hydroxy-5a-pregnan-20-one | A catabolite of progesterone; found in the urine of pregnant women. (05 Mar 2000) |
| 3 beta-hydroxy-delta 5-C(27)-steroid dehydrogenase | <enzyme> Second enzyme in the sequence that converts cholesterol to bile acids; deficiency leads to chronic liver disease in childhood Registry number: EC 1.1.1.- Synonym: 7 alpha-hydroxycholesterol 3 beta-dehydrogenase, 7-hydroxycholesterol 3-dehydrogenase, 3 beta-hydroxy-delta(5)-c(27)-steroid oxidoreductase, 5-cholestene-3beta,7alpha-diol oxidase (26 Jun 1999) |
| 3-hydroxy-2-methylpropionyl-CoA dehydrogenase | <enzyme> Forms methylmalonyl-CoA saemialdehyde Registry number: EC 1.1.1.- Synonym: 3-hydroxyisobutyryl-CoA dehydrogenase (26 Jun 1999) |
| 3-hydroxy-2-pyrrolidinecarboxylic acid | A derivative of proline found in certain collagens, particularly basement membrane collagen. Synonym: 3-hydroxy-2-pyrrolidinecarboxylic acid. (05 Mar 2000) |
| 3-hydroxy-3-methylglutaryl-CoA | -OOCCH2C(OH)(CH3)CH2COS-CoA;a key intermediate in the synthesis of ketone bodies and of steroids. Synonym: 3-hydroxy-3-methylglutaryl-CoA. Beta-hydroxy-beta-methylglutaryl-lyase, an enzyme, found primarily in liver and rumen epithelium that catalyses the formation of acetyl-CoA and acetoacetate from beta-hydroxy-beta-methylglutaryl-CoA; a key step in ketogenesis; a deficiency of this enzyme leads to episodes of severe metabolic acidosis without ketosis. Beta-hydroxy-beta-methylglutaryl-reductase, an enzyme that catalyses the rate-limiting step of cholesterol biosynthesis, beta-hydroxy-beta-methylglutaryl-CoA + 2NADPH + 2H+ → mevalonate + 2NADP+ + coenzyme A. Beta-hydroxy-beta-methylglutaryl-synthase, an enzyme in mitochondria that catalyses the reaction of acetyl-CoA with acetoacetyl-CoA and water to form beta-hydroxy-beta-methylglutaryl-CoA and coenzyme A, a step required for both ketogenesis and steroidogenesis to occur. (05 Mar 2000) |