1.14.19.36: sn-1 acyl-lipid omega-3 desaturase (ferredoxin)

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Word Map on EC 1.14.19.36

1.14.19.36

desaturases

desaturation

low-temperature

trienoic

soybean

synechocystis

alpha-linolenic

delta12

perception

cyanobacterium

eicosapentaenoic

acclimation

gamma-linolenic

arachidonic

unsaturated

polyunsaturated

photoautotrophic

Reaction

a 1-gamma-linolenoyl 2-acyl-sn-glycerol 3-phosphate

+ 2 reduced ferredoxin +

+ 2 H+ =

a 1-stearidonoyl 2-acyl-sn-glycerol 3-phosphate

+ 2 oxidized ferredoxin + 2 H2O

Synonyms

DELTA15 desaturase, DesB, DesB protein, FA omega3-desaturase, FAD8, More, Omega 3 acyl-lipid desaturase, omega3 desaturase, omega3 fatty acid desaturase, omega3-FA-desaturase, plastidial FAD8 omega-3 desaturase, plastidial omega-3 desaturase, terminal omega3-desaturase

ECTree

1 Oxidoreductases

1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen

1.14.19 With oxidation of a pair of donors resulting in the reduction of O₂ to two molecules of water

1.14.19.36 sn-1 acyl-lipid omega-3 desaturase (ferredoxin)

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Results	in table
15	AA Sequence
5	Cloned(Commentary)
2	Cofactor
9	Expression
9	General Information
6	Localization
2	Molecular Weight [Da]
4	Natural Substrates/ Products (Substrates)
12	Organism
2	Pathway
3	Protein Variants
6	Reaction
8	Reference
4	Source Tissue
6	Substrates and Products (Substrate)
2	Subunits
24	Synonyms
1	Systematic Name

Systematic Name

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Systematic Name on EC 1.14.19.36 - sn-1 acyl-lipid omega-3 desaturase (ferredoxin)

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1-gamma-linolenoyl-2-acyl-[glycerolipid],ferredoxin:oxygen oxidoreductase (15,16 cis-dehydrogenating)

The enzyme, characterized from cyanobacteria, introduces a cis double bond at carbon 15 of linoleoyl and gamma-linolenoyl groups attached to the sn-1 position of glycerolipids. The enzyme is an omega desaturase, and determines the location of the double bond by counting three carbons from the methyl end of the fatty acid. It is nonspecific with respect to the polar head group of the glycerolipid. cf. EC 1.14.19.35, sn-2 acyl-lipid omega-3 desaturase (ferredoxin).