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Information on EC 1.14.19.35 - sn-2 acyl-lipid omega-3 desaturase (ferredoxin)

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EC Tree
IUBMB Comments
This plastidial enzyme desaturates 16:2 fatty acids attached to the sn-2 position of glycerolipids to 16:3 fatty acids, and converts18:2 to 18:3 in both the sn-1 and sn-2 positions. It acts on all 16:2- or 18:2-containing chloroplast membrane lipids, including phosphatidylglycerol, monogalactosyldiacylglycerol, digalactosyldiaclyglycerol, and sulfoquinovosyldiacylglycerol. The enzyme introduces a cis double bond at a location 3 carbons away from the methyl end of the fatty acid. The distance from the carboxylic acid end of the molecule does not affect the location of the new double bond. cf. EC 1.14.19.25, acyl-lipid omega-3 desaturase (cytochrome b5) and EC 1.14.19.36, sn-1 acyl-lipid omega-3 desaturase (ferredoxin).
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Word Map
The enzyme appears in viruses and cellular organisms
Synonyms
fad7-2, osfad8, omega-3 fatty acid desaturase gene, gmfad7, omega3 fatty acid desaturase, hafad7, fad7-1, fatty acid desaturase7, fatty acid desaturase 7, pfrfad7-2, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
a (7Z,10Z)-hexadeca-7,10-dienoyl-[glycerolipid] + 2 reduced ferredoxin + O2 + 2 H+ = a (7Z,10Z,13Z)-hexadeca-7,10,13-trienoyl-[glycerolipid] + 2 oxidized ferredoxin + 2 H2O
show the reaction diagram
a (7Z,10Z)-hexadeca-7,10-dienoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ = a (7Z,10Z,13Z)-hexadeca-7,10,13-trienoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
show the reaction diagram
(1)
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a linoleoyl-[glycerolipid] + 2 reduced ferredoxin + O2 + 2 H+ = an alpha-linolenoyl-[glycerolipid] + 2 oxidized ferredoxin + 2 H2O
show the reaction diagram
a linoleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ = an alpha-linolenoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
show the reaction diagram
(2)
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PATHWAY SOURCE
PATHWAYS
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