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Literature summary for 1.14.19.23 extracted from

  • Hitz, W.D.; Carlson, T.J.; Booth, J.R.; Jr., Kinney, A.J.; Stecca, K.L.; Yadav, N.S.
    Cloning of a higher-plant plastid omega-6 fatty acid desaturase cDNA and its expression in a cyanobacterium (1994), Plant Physiol., 105, 635-641.
    View publication on PubMedView publication on EuropePMC
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Cloned(Commentary)

Cloned (Comment) Organism
functional expression in cyanobacterium Synechococcus sp. strain PCC7942 Arabidopsis thaliana

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana P46312
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
an oleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ 18:1 carbon fatty acid is the preferred substrate Arabidopsis thaliana a linoleoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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 ?
an palmitoleoyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ 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 Arabidopsis thaliana a (9Z,12E)-hexadeca-9,12-dienoyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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additional information 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 Arabidopsis thaliana ?
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