ID   1.14.19.22
DE   acyl-lipid omega-6 desaturase (cytochrome b5).
AN   linoleate synthase.
AN   oleate desaturase.
AN   oleoyl-CoA desaturase.
AN   phosphatidylcholine desaturase.
CA   a (9Z)-octadecenoyl-containing glycerolipid + 2 Fe(II)-[cytochrome b5] +
CA   2 H(+) + O2 = a (9Z,12Z)-octadecadienoyl-containing glycerolipid +
CA   2 Fe(III)-[cytochrome b5] + 2 H2O.
CC   -!- This microsomal enzyme introduces a cis double bond in fatty acids
CC       attached to lipid molecules at a location 6 carbons away from the
CC       methyl end of the fatty acid.
CC   -!- The distance from the carboxylic acid end of the molecule does not
CC       affect the location of the new double bond.
CC   -!- The most common substrates are oleoyl groups attached to either sn-1
CC       or sn-2 position of the glycerol backbone in phosphatidylcholine. cf.
CC       EC 1.14.19.23.
CC   -!- Formerly EC 1.3.1.35.
DR   P46313, FAD6E_ARATH;
//