1.14.19.23: acyl-lipid (n+3)-(Z)-desaturase (ferredoxin)
This is an abbreviated version!
For detailed information about acyl-lipid (n+3)-(Z)-desaturase (ferredoxin), go to the full flat file.
Word Map on EC 1.14.19.23
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1.14.19.23
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oleic
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linoleic
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desaturation
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polyunsaturated
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cotton
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omega-3
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fat1
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cottonseed
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docosahexaenoic
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pufas
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eicosapentaenoic
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acanthamoeba
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spinacia
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desaturase-2
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castellanii
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upland
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gossypium
- 1.14.19.23
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oleic
-
linoleic
-
desaturation
-
polyunsaturated
- cotton
-
omega-3
- fat1
-
cottonseed
-
docosahexaenoic
-
pufas
-
eicosapentaenoic
-
acanthamoeba
-
spinacia
-
desaturase-2
- castellanii
-
upland
- gossypium
Reaction
+ 2 reduced ferredoxin [iron-sulfur] cluster + + 2 H+ = + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
Synonyms
acyl-lipid omega6-desaturase (ferredoxin), DELTA-12 desaturase, FAD6, fatty acid desaturase-6, linoleate synthase, n-6 desaturase, oleate desaturase, oleoyl-CoA desaturase, oleoylphosphatidylcholine desaturase, phosphatidylcholine desaturase
ECTree
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Substrates Products
Substrates Products on EC 1.14.19.23 - acyl-lipid (n+3)-(Z)-desaturase (ferredoxin)
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REACTION DIAGRAM
1,2-di-(9'-cis-octadecenyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster O2 + 2 H+
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-
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?
1,2-dioleoyl-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
?
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-
-
?
1-oleoyl-2-(7'-cis-hexadecenoyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
1-linoleoyl-2-(7'-cis-hexadecenoyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
1-oleoyl-sn-glycerol 3-phosphate + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
1-linoleoyl-sn-glycerol 3-phosphate + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
an oleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
a linoleoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
an oleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster+ O2 + 2 H+
a linoleoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
an oleoyl-[monogalactosyldiacylglycerol] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
a linoleoyl-[monogalactosyldiacylglycerol] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
an palmitoleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
a (9Z,12E)-hexadeca-9,12-dienoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
the main product arising from desaturation of 16:1(9c) appears to be the 16:2(9,12) isomer and is thus an omega-4 desaturation product rather than an omega-6 desaturation product
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-
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erucic acid + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
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-
-
?
oleate + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
linoleate + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
oleoyl-[glycerolipid] + reduced ferredoxin [iron-sulfur] cluster + O2 + H+
linoleoyl-[glycerolipid] + oxidized ferredoxin [iron-sulfur] cluster + H2O
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-
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-
?
a linoleoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
18:1 carbon fatty acid is the preferred substrate
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-
?
an oleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
a linoleoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
linoleate + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
oleate + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
linoleate + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
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-
?
?
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the production of the omega-4 product when 16:1(9c) is the available substrate suggests that the enzyme introduces the second double bond in a methylene-interrupted configuration measuring from the first double bond rather than from the methyl end of the fatty acid
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additional information
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the enzyme measures the insertion of the new double bond from the methyl end and the existing (n-9)-cis double bond of an appropriate acyl or alkyl chain. The distal part of the substrate group, normally the carboxy end of a fatty acyl residue, is of less importance and, in particular, its activation in thioester form is not required
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additional information
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the enzyme measures the insertion of the new double bond from the methyl end and the existing (n-9)-cis double bond of an appropriate acyl or alkyl chain. The distal part of the substrate group, normally the carboxy end of a fatty acyl residue, is of less importance and, in particular, its activation in thioester form is not required
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?