| delta rhythm | Brain waves in the electroencephalogram which have a frequency below 3 1/2 per second. They are typical in deep sleep, in infancy, and in serious brain disorders. (12 Dec 1998) |
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| delta sleep-inducing peptide | <chemical> A nonapeptide that is found in neurons, peripheral organs, and plasma. This neuropeptide induces mainly delta sleep in mammals. In addition to sleep, the peptide has been observed to affect electrophysiological activity, neurotransmitter levels in the brain, circadian and locomotor patterns, hormonal levels, psychological performance, and the activity of neuropharmacological drugs including their withdrawal. Chemical name: Delta sleep-inducing peptide (12 Dec 1998) |
| delta wave | A premature upstroke of the QRS complex due to an atrial ventricular bypass tract as in WPW syndrome. Synonym: delta rhythm. (05 Mar 2000) |
| DNA delta-helicase | <enzyme> From foetal calf thymus; partially copurifies with DNA polymerase delta; also has DNA-dependent atpase activity Registry number: EC 3.6.1.- (26 Jun 1999) |
| dodecenoyl-coenzyme A delta-isomerase | <enzyme> An auxiliary enzyme for the beta-oxidation of unsaturated fatty acids; converts both cis and trans delta(3)-enoyl CoA esters to their trans-2-counterparts Registry number: EC 5.3.3.8 Synonym: enoyl-CoA isomerase, dodecenoyl-CoA delta-isomerase, 3-cis-2-trans-enoyl-CoA isomerase, delta(3), delta(2)-enoyl-CoA isomerase (26 Jun 1999) |
| immunoglobulins, delta-chain | Heavy chains found in the fab and fc fragments of IgD and having a molecular weight of approximately 64 kD. They contain about 500 amino acid residues arranged in four domains and an oligosaccharide component covalently bound to the fc fragment. (12 Dec 1998) |
| isopiperitenone delta-isomerase | <enzyme> From peppermint; intramolecular 1,3-hydrogen transfer forms piperitenone Registry number: EC 5.3.3.11 Synonym: isopiperitenone isomerase (26 Jun 1999) |
| enoyl-CoA hydratase - 3-hydroxyacyl-CoA dehydrogenase - dodecanoyl-coenzyme A delta-isomerase | <chemical> Catalyses the second and third reactions of the fatty acid beta-oxidation cycle, converting enoyl-CoA to 3-ketoacyl-CoA; EC 4.2.1.17 and EC 1.1.1.35 and EC 5.3.3.8; consider also multifunctional protein-a Synonym: peroxisomal bifunctional enzyme, enoyl-coenzyme a hydratase -- 3-hydroxyacyl-coenzyme a dehydrogenase, peroxisomal trifunctional enzyme, delta(3), delta(2)-enoyl-CoA isomerase--2-enoyl-CoA hydratase--3-hydroxyacyl-CoA dehydrogenase (26 Jun 1999) |
| 2-oxo-delta(3)-4,5,5--trimethylcyclopentenyl acetyl-CoA monooxygenase | <enzyme> Nadph-dependent baeyer-villiger monooxygenase that catalyses conversion of 2-(2'-acetoxyethyl)cyclohexanone to 7-(2'-acetoxyethyl)-2-oxepanone Registry number: EC 1.14.13.- Synonym: odtac monooxygenase (26 Jun 1999) |
| 2-oxo-delta-(3)-4,5,5-trimethylcyclopentenylacetyl-CoA oxygenase | <enzyme> Specific for NADPH as electron donor; incorporates single molecule of oxygen Registry number: EC 1.14.13.- Synonym: otmcpa CoA oxygenase, 2-oxo-delta-(3)-4,5,5-trimethylcyclopentenylacetyl-coenzyme a oxygenase (26 Jun 1999) |
| 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 beta-hydroxysteroid oxidoreductase-delta(5) 3-ketosteroid isomerase | <chemical> System found in breast cancers; consists of EC 1.1.1.145 (progesterone reductase) and EC 5.3.3.1 (steroid delta-isomerase)) Synonym: 3 ohsteroid dehydrogenase-isomerase, delta 5-3 beta hydroxysteroid dehydrogenase-isomerase, 3 beta-hydroxysteroid dehydrogenase-isomerase, 3 beta-hydroxysteroid dehydrogenase-delta(5)-delta(4)-isomerase, 3 beta-hydroxysteroid dehydrogenase-5--4-ene-isomerase, 3-beta-hydroxysteroid dehydrogenase-delta(5-4)-isomerase, 3 beta hydroxysteroid dehydrogenase-delta5-delta4-isomerasease, 3 beta-ol dehydrogenase-delta(4)-delta(5) isomerase, 3 beta-hydroxy-5-ene steroid dehydrogenase-delta 5-delta 4 isomerase (26 Jun 1999) |
| 3-methylitaconate delta-isomerase | <enzyme> Catalyses reversibly the isomerization of methylitaconate to dimethylmaleate Registry number: EC 5.3.3.6 Synonym: 3-midiase (26 Jun 1999) |
| 3-oxo-5 beta-steroid delta 4-dehydrogenase | <enzyme> Do not confuse with EC 1.3.1.23 (cholestenone 5 beta-reductase) which is also steroid 5 beta-reductase in chemline; do not use for enzyme using NADP-see EC 1.3.1.23 and EC 1.3.1.3 Chemical name: 3-oxo-5 beta-steroid delta(4)dehydrogenase Registry number: EC 1.3.99.6 Synonym: steroid 5 beta-reductase, testosterone 5 beta-reductase, 4-ene-5 beta-reductase, delta(4)-3-ketosteroid-5 beta-(acceptor)-reductase, testosterone 5beta-reductase, delta(4)-5beta-reductase, cytosolic 4-ene-reductase (26 Jun 1999) |
| 3-oxosteroid delta(1) dehydrogenase | <enzyme> Cytochrome c used in assay Registry number: EC 1.3.99.4 Synonym: 4-ene-3-oxosteroid (acceptor)-1-ene-oxidoreductase, steroid 1,2-dehydrogenase, 4-en-3-oxosteroid-(acceptor)-1-en oxidoreductase, steroid-1-dehydrogenase, 3-ketosteroid delta(1) dehydrogenase (26 Jun 1999) |