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Literature summary for 1.14.19.23 extracted from

  • Schmidt, H.; Heinz, E.
    Direct desaturation of intact galactolipids by a desaturase solubilized from spinach (Spinacia oleracea) chloroplast envelopes (1993), Biochem. J., 289, 777-782.
    View publication on PubMedView publication on EuropePMC

Localization

Localization Comment Organism GeneOntology No. Textmining
chloroplast
-
Spinacia oleracea 9507
-

Organism

Organism UniProt Comment Textmining
Spinacia oleracea P48629
-
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Spinacia oleracea
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1,2-di-(9'-cis-octadecenyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster O2 + 2 H+
-
Spinacia oleracea ?
-
?
1,2-dioleoyl-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
-
Spinacia oleracea ?
-
?
1-oleoyl-2-(7'-cis-hexadecenoyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
-
Spinacia oleracea 1-linoleoyl-2-(7'-cis-hexadecenoyl)-3-beta-D-galactopyranosyl-sn-glycerol + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
-
?
1-oleoyl-sn-glycerol 3-phosphate + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
-
Spinacia oleracea 1-linoleoyl-sn-glycerol 3-phosphate + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H2O
-
?
erucic acid + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
-
Spinacia oleracea ?
-
?
additional information 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 Spinacia oleracea ?
-
?
oleate + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
-
Spinacia oleracea linoleate + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7 8
-
Spinacia oleracea

pH Range

pH Minimum pH Maximum Comment Organism
6 9 pH 6.0: about 65% of maximal activity, pH 9.0: about 65% of maximal activity Spinacia oleracea