| desaturase | Any of several enzymes that putdouble bonds into the hydrocarbon areasof fatty acids. (09 Oct 1997) |
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| plasmanylethanolamine desaturase | <enzyme> Converts 1-alkyl-2-acyl-sn-glycero-3-phosphoethanolamine to alk-1-enyl-2-acyl-gpe (plasmenylethanolamine); requires cytochrome b5, molecular oxygen and either NADPH or NADH Registry number: EC 1.14.99.19 Synonym: alkylacylglycerophosphoethanolamine desaturase, plasmanylethanolamine delta-1-desaturase, alkylacyl-gpe desaturase, delta-1'-fatty acid desaturase (26 Jun 1999) |
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| hydroxyneurosporene desaturase | <enzyme> Involved in carotenoid biosynthesis; specific for hydroxyneurosporene; requires molecular oxygen for the c-3,4 desaturation reaction; isolated from rhodobacter sphaeroides; do not confuse with crtd gene product for methoxyneurosporene desaturase Registry number: EC 1.3.3.- Synonym: crtd gene product (hydroxyneurosporene), crtd ohn (26 Jun 1999) |
| N-acetyldopamine desaturase | <enzyme> Desaturates the side chain of n-acetyl dopamine by oxidizing it to the corresponding quinone and converts it into 1,2-dihydro-n-acetyldopmaine via isomerization of nada quinone methide Registry number: EC 1.10.3.- Synonym: nada desaturase (26 Jun 1999) |
| stearoyl-CoA desaturase | <enzyme> An enzyme that catalyses the formation of oleoyl-CoA, a, and water from stearoyl-CoA, ah2, and oxygen where ah2 is an unspecified hydrogen donor. Chemical name: Stearoyl-CoA,hydrogen-donor:oxygen oxidoreductase Registry number: EC 1.14.99.5 (12 Dec 1998) |
| stearyl-CoA desaturase | A protein complex that is key in the synthesis of unsaturated fatty acids; it introduces a double bond at d9; high dietary levels of unsaturated fatty acids decrease this enzyme's activity in the liver; a number of agents will induce this enzyme (e.g., insulin, hydrocortisone, and triiodothyronine). (05 Mar 2000) |
| sterol delta-5 desaturase | <enzyme> Involved in ergosterol synthesis; do not confuse with delta5,7-sterol delta-7-reductase which is involved in cholesterol biosynthesis Registry number: EC 1.3.- Synonym: sterol c5-6 desaturase, c-5 sterol desaturase, erg3 gene product, delta(5,6) sterol desaturase, syr1 gene product, delta(7)-sterol-c-5-desaturase (26 Jun 1999) |
| dehydrosqualene desaturase | <enzyme> Involved in the synthesis of yellow carotenoid 4,4'-diaponeurosporene in staphylococcus aureus; 448 amino acids, mw 51 kD; amino acid sequence given in first source (orf2); genbank x73889 Registry number: EC 1.- Synonym: crtn protein, crtn gene product (26 Jun 1999) |
| delta-13 fatty acid desaturase | <enzyme> Involved in sex pheromone biosynthesis from palmitic acid in the moth thaumetopoea pityocampa, acts in conjunction with an 11-desaturase Registry number: EC 1.14.99.- Synonym: delta-13 desaturase (26 Jun 1999) |
| delta-15 desaturase | <enzyme> Catalyses desaturation of glycerolipid-linked linoleic acid at position 15; has been sequenced; genbank u17063 Registry number: EC 1.14.99.- Synonym: delta(5)-desaturase (26 Jun 1999) |
| delta-22 fatty acid desaturase | <enzyme> Involved in ergosterol biosynthesis Registry number: EC 1.14.99.- Synonym: ergosta-5,7-dien-3 beta-ol delta-22 desaturase (26 Jun 1999) |
| delta-22 sterol desaturase | <enzyme> Catalyses the formation of the sterol side delta-22-double bond from 23-hydroxysterols Registry number: EC 1.3.3.- Synonym: c-22 sterol desaturase, cyp61, cytochrome p-45061, sterol delta22-desaturase (26 Jun 1999) |
| dihydroceramide desaturase | <enzyme> Catalyses conversion of dihydroceramide to ceramide Registry number: EC 1.3.1.- (26 Jun 1999) |
| omega-3 fatty acid desaturase | <enzyme> Catalyses desaturation of the omega-3 carbon (3rd from free end) of c-18 fatty acids; deficiency results in accumulation of linoleic acid (18:2omega6,9) at the expense of linolenic acid (18:3omega3,6,9); amino acid sequence given in first source Registry number: EC 1.14.99.- Synonym: fad3 gene product, omega-3 desaturase (26 Jun 1999) |
| omega-6 desaturase | <enzyme> Catalyses desaturation at omega-6 carbon (sixth carbon from free end) Registry number: EC 1.44.99.- Synonym: fad6 gene product, fadc gene product, fad2-1 gene product, fad2-2 gene product (26 Jun 1999) |
| zeta-carotene desaturase | <enzyme> Isolated from anabaena Registry number: EC 1.3.3.- Synonym: zds gene product (26 Jun 1999) |