Score = 102 bits (253), Expect = 1e-21, Method: Compositional matrix adjust.
Identities = 45/74 (60%), Positives = 60/74 (81%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
++ILPS+N+ VSI + GEG+HNYHHVFPWDYRAAE+G+ SLN T ++D FA IGWAYDL
Sbjct: 240 KKILPSQNIAVSIATFGEGFHNYHHVFPWDYRAAELGNNSLNFPTKFIDFFAWIGWAYDL 299
Query: 65 KKPSDKMIRSHAEK 78
K S +MI+ +++
Sbjct: 300 KTVSKEMIKQRSKR 313
Catalyzes the formation of delta(11) fatty acyl precursors in the pheromone gland, and has high activity towards palmitic acid and stearic acid. Spodoptera littoralis (taxid: 7109) EC: 1EC: .EC: 1EC: 4EC: .EC: 1EC: 9EC: .EC: 5
>sp|O44390|ACO11_TRINI Acyl-CoA Delta(11) desaturase OS=Trichoplusia ni GN=D11DS PE=1 SV=2
Score = 72.4 bits (176), Expect = 8e-13, Method: Compositional matrix adjust.
Identities = 35/68 (51%), Positives = 48/68 (70%), Gaps = 1/68 (1%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
+ I P EN+ VS+ ++GEG+HNYHH FP+DY A+E + +NLTTF++D A +G AYD
Sbjct: 267 KTISPRENILVSLGAVGEGFHNYHHTFPYDYSASEY-RWHINLTTFFIDCMAALGLAYDR 325
Query: 65 KKPSDKMI 72
KK S I
Sbjct: 326 KKVSKAAI 333
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Score = 71.6 bits (174), Expect = 1e-12, Method: Compositional matrix adjust.
Identities = 38/80 (47%), Positives = 52/80 (65%), Gaps = 6/80 (7%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
+ I P EN+ VS+ ++GEG+HNYHH FP+DY A+E + +N TTF++D A IG AYD
Sbjct: 278 KTINPRENILVSLGAVGEGFHNYHHTFPYDYSASEY-RWHINFTTFFIDCMAAIGLAYDR 336
Query: 65 KKPSD-----KMIRSHAEKY 79
KK S +M R+ E Y
Sbjct: 337 KKVSKAAVLGRMKRTGEESY 356
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Score = 71.2 bits (173), Expect = 2e-12, Method: Compositional matrix adjust.
Identities = 35/74 (47%), Positives = 49/74 (66%), Gaps = 1/74 (1%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
+ I P EN+ VS+ + GEG+HNYHH FP+DY A+E + +N TTF++D A IG AYD
Sbjct: 278 KTINPRENILVSLGAAGEGFHNYHHTFPYDYSASEY-RWHINFTTFFIDCMAAIGLAYDR 336
Query: 65 KKPSDKMIRSHAEK 78
KK S I + ++
Sbjct: 337 KKVSKAAILARIKR 350
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Score = 70.9 bits (172), Expect = 2e-12, Method: Compositional matrix adjust.
Identities = 34/74 (45%), Positives = 50/74 (67%), Gaps = 1/74 (1%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
+ I P EN+ VS+ ++GEG+HNYHH FP+DY A+E + +N TTF++D A +G AYD
Sbjct: 278 KNISPRENILVSLGAVGEGFHNYHHSFPYDYSASEY-RWHINFTTFFIDCMAALGLAYDR 336
Query: 65 KKPSDKMIRSHAEK 78
KK S I + ++
Sbjct: 337 KKVSKAAILARIKR 350
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Score = 70.1 bits (170), Expect = 4e-12, Method: Compositional matrix adjust.
Identities = 34/74 (45%), Positives = 48/74 (64%), Gaps = 1/74 (1%)
Query: 5 RRILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDL 64
+ I P EN VS+ LGEG+HNYHH FP+DY A+E + +N TTF++D A +G AYD
Sbjct: 273 KNIDPRENALVSLGCLGEGFHNYHHAFPYDYSASEY-RWHINFTTFFIDCMAALGLAYDR 331
Query: 65 KKPSDKMIRSHAEK 78
KK S + + ++
Sbjct: 332 KKVSKAAVLARIKR 345
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.
Mus musculus (taxid: 10090)
EC: 1
EC: .
EC: 1
EC: 4
EC: .
EC: 1
EC: 9
EC: .
EC: 1
Close Homologs in the Non-Redundant Database Detected by BLAST
GO:0016717 "oxidoreductase activity, acting on paired donors, with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of water" evidence=IEA
GO:0016717 "oxidoreductase activity, acting on paired donors, with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of water" evidence=IEA
cd01060, Membrane-FADS-like, The membrane fatty ac
0.002
>gnl|CDD|239582 cd03505, Delta9-FADS-like, The Delta9 Fatty Acid Desaturase (Delta9-FADS)-like CD includes the delta-9 and delta-11 acyl CoA desaturases found in various eukaryotes including vertebrates, insects, higher plants, and fungi
Score = 81.1 bits (201), Expect = 1e-20
Identities = 27/69 (39%), Positives = 38/69 (55%), Gaps = 5/69 (7%)
Query: 1 MKGKR----RILPSENVWVSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFA 56
M G R R N WV++++ GEGWHN HH FP D R + Y ++ T + +
Sbjct: 111 MWGYRPYDTRDTSRNNWWVALLTFGEGWHNNHHAFPGDARNG-LKWYQIDPTKWVIRLLE 169
Query: 57 KIGWAYDLK 65
K+G A+DLK
Sbjct: 170 KLGLAWDLK 178
The delta-9 acyl-lipid desaturases are found in a wide range of bacteria. These enzymes play essential roles in fatty acid metabolism and the regulation of cell membrane fluidity. Acyl-CoA desaturases are the enzymes involved in the CoA-bound desaturation of fatty acids. Mammalian stearoyl-CoA delta-9 desaturase is a key enzyme in the biosynthesis of monounsaturated fatty acids, and in yeast, the delta-9 acyl-CoA desaturase (OLE1) reaction accounts for all de nova unsaturated fatty acid production in Saccharomyces cerevisiae. These non-heme, iron-containing, ER membrane-bound enzymes are part of a three-component enzyme system involving cytochrome b5, cytochrome b5 reductase, and the delta-9 fatty acid desaturase. This complex catalyzes the NADH- and oxygen-dependent insertion of a cis double bond between carbons 9 and 10 of the saturated fatty acyl substrates, palmitoyl (16:0)-CoA or stearoyl (18:0)-CoA, yielding the monoenoic products palmitoleic (16:l) or oleic (18:l) acids, respectively. In cyanobacteria, the biosynthesis of unsaturated fatty acids is initiated by delta 9 acyl-lipid desaturase (DesC) which introduces the first double bond at the delta-9 position of a saturated fatty acid that has been esterified to a glycerolipid. This domain family has extensive hydrophobic regions that would be capable of spanning the membrane bilayer at least twice. Comparison of sequences also reveals the existence of three regions of conserved histidine cluster motifs that contain the residues: HXXXXH, HXXHH, and H/QXXHH. These histidine residues are reported to be catalytically essential and proposed to be the ligands for the iron atoms contained within the rat stearoyl CoA delta-9 desaturase. Some eukaryotic (Fungi, Euglenozoa, Mycetozoa, Rhodophyta) desaturase domains have an adjacent C-terminal cytochrome b5-like domain. Length = 178
Score = 43.6 bits (103), Expect = 3e-06
Identities = 23/68 (33%), Positives = 38/68 (55%), Gaps = 2/68 (2%)
Query: 10 SENVW-VSIVSLGEGWHNYHHVFPWDYRAAEMGSYSLNLTTFWLDQFAKIGWAYDLKKPS 68
S NVW +S+ ++GE WHN HH F R + + +++T + + F +G A D+K P+
Sbjct: 230 SRNVWWLSLFTMGESWHNNHHAFESSARQG-LEWWQIDITWYLIRFFEVLGLATDVKLPT 288
Query: 69 DKMIRSHA 76
+ R A
Sbjct: 289 EAQKRKMA 296
Length = 299
>gnl|CDD|238511 cd01060, Membrane-FADS-like, The membrane fatty acid desaturase (Membrane_FADS)-like CD includes membrane FADSs, alkane hydroxylases, beta carotene ketolases (CrtW-like), hydroxylases (CrtR-like), and other related proteins
They are present in all groups of organisms with the exception of archaea. Membrane FADSs are non-heme, iron-containing, oxygen-dependent enzymes involved in regioselective introduction of double bonds in fatty acyl aliphatic chains. They play an important role in the maintenance of the proper structure and functioning of biological membranes. Alkane hydroxylases are bacterial, integral-membrane di-iron enzymes that share a requirement for iron and oxygen for activity similar to that of membrane FADSs, and are involved in the initial oxidation of inactivated alkanes. Beta-carotene ketolase and beta-carotene hydroxylase are carotenoid biosynthetic enzymes for astaxanthin and zeaxanthin, respectively. This superfamily domain has extensive hydrophobic regions that would be capable of spanning the membrane bilayer at least twice. Comparison of these sequences also reveals three regions of conserved histidine cluster motifs that contain eight histidine residues: HXXX(X)H, HXX(X)HH, and HXXHH (an additional conserved histidine residue is seen between clusters 2 and 3). Spectroscopic and genetic evidence point to a nitrogen-rich coordination environment located in the cytoplasm with as many as eight histidines coordinating the two iron ions and a carboxylate residue bridging the two metals in the Pseudomonas oleovorans alkane hydroxylase (AlkB). In addition, the eight histidine residues are reported to be catalytically essential and proposed to be the ligands for the iron atoms contained within the rat stearoyl CoA delta-9 desaturase. Length = 122
>cd03505 Delta9-FADS-like The Delta9 Fatty Acid Desaturase (Delta9-FADS)-like CD includes the delta-9 and delta-11 acyl CoA desaturases found in various eukaryotes including vertebrates, insects, higher plants, and fungi
The delta-9 acyl-lipid desaturases are found in a wide range of bacteria. These enzymes play essential roles in fatty acid metabolism and the regulation of cell membrane fluidity. Acyl-CoA desaturases are the enzymes involved in the CoA-bound desaturation of fatty acids. Mammalian stearoyl-CoA delta-9 desaturase is a key enzyme in the biosynthesis of monounsaturated fatty acids, and in yeast, the delta-9 acyl-CoA desaturase (OLE1) reaction accounts for all de nova unsaturated fatty acid production in Saccharomyces cerevisiae. These non-heme, iron-containing, ER membrane-bound enzymes are part of a three-component enzyme system involving cytochrome b5, cytochrome b5 reductase, and the delta-9 fatty acid desaturase. This complex catalyzes the NADH- and oxygen-dependent i
; InterPro: IPR005804 Fatty acid desaturases are enzymes that catalyse the insertion of a double bond at the delta position of fatty acids. There seem to be two distinct families of fatty acid desaturases which do not seem to be evolutionary related. Family 1 is composed of: Stearoyl-CoA desaturase (SCD) (1.14.19.1 from EC) []. Family 2 is composed of: Bacterial fatty acid desaturases. Plant stearoyl-acyl-carrier-protein desaturase (1.14.19.1 from EC) [], this enzyme catalyzes the introduction of a double bond at the delta(9) position of steraoyl-ACP to produce oleoyl-ACP. This enzyme is responsible for the conversion of saturated fatty acids to unsaturated fatty acids in the synthesis of vegetable oils. Cyanobacterial DesA [], an enzyme that can introduce a second cis double bond at the delta(12) position of fatty acid bound to membranes glycerolipids. DesA is involved in chilling tolerance; the phase transition temperature of lipids of cellular membranes being dependent on the degree of unsaturation of fatty acids of the membrane lipids. This entry contains fatty acid desaturases belonging to Family 1. ; GO: 0006629 lipid metabolic process
>cd03513 CrtW_beta-carotene-ketolase Beta-carotene ketolase/oxygenase (CrtW, also known as CrtO), the carotenoid astaxanthin biosynthetic enzyme, initially catalyzes the addition of two keto groups to carbons C4 and C4' of beta-carotene
Carotenoids are important natural pigments produced by many microorganisms and plants. Astaxanthin is reported to be an antioxidant, an anti-cancer agent, and an immune system stimulant. A number of bacteria and green algae can convert beta-carotene into astaxanthin by using several ketocarotenoids as intermediates and CrtW and a beta-carotene hydroxylase (CrtZ). CrtW initially converts beta-carotene to canthaxanthin via echinenone, and CrtZ initially mediates the conversion of beta-carotene to zeaxanthin via beta-cryptoxanthin. After a few more intermediates are formed, CrtW and CrtZ act in combination to produce astaxanthin. Sequences of this domain family appear to be structurally related to membrane fatty acid desaturases and alkane hydroxylases. Th
>COG5274 CYB5 Cytochrome b involved in lipid metabolism [Energy production and conversion / Lipid metabolism]
>cd03506 Delta6-FADS-like The Delta6 Fatty Acid Desaturase (Delta6-FADS)-like CD includes the integral-membrane enzymes: delta-4, delta-5, delta-6, delta-8, delta-8-sphingolipid, and delta-11 desaturases found in vertebrates, higher plants, fungi, and bacteria
These desaturases are required for the synthesis of highly unsaturated fatty acids (HUFAs), which are mainly esterified into phospholipids and contribute to maintaining membrane fluidity. While HUFAs may be required for cold tolerance in bacteria, plants and fish, the primary role of HUFAs in mammals is cell signaling. These enzymes are described as front-end desaturases because they introduce a double bond between the pre-exiting double bond and the carboxyl (front) end of the fatty acid. Various substrates are involved, with both acyl-coenzyme A (CoA) and acyl-lipid desaturases present in this CD. Acyl-lipid desaturases are localized in the membranes of cyanobacterial thylakoid, plant endoplasmic reticulum (ER), and plastid; an
>smart00541 FYRN "FY-rich" domain, N-terminal region
is sometimes closely juxtaposed with the C-terminal region (FYRC), but sometimes is far distant. Unknown function, but occurs frequently in chromatin-associated proteins.
