1.14.19.26: acyl-[acyl-carrier-protein] 6-desaturase
This is an abbreviated version!
For detailed information about acyl-[acyl-carrier-protein] 6-desaturase, go to the full flat file.
Reaction
+ 2 reduced ferredoxin [iron-sulfur] cluster + + 2 H+ = + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
Synonyms
DELTA6 16:0-ACP desaturase, DELTA6 desaturase, DELTA6 palmitoyl-ACP desaturase, DELTA6-16:0-ACP desaturase, DELTA6-palmitoyl (16:0)-ACP desaturase, DELTA6-sphingolipid desaturase, DES6
ECTree
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Substrates Products
Substrates Products on EC 1.14.19.26 - acyl-[acyl-carrier-protein] 6-desaturase
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REACTION DIAGRAM
alpha-linolenic acid + ferrocytochrome b5 + O2 + H+
stearidonic acid + ferricytochrome b5 + H2O
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?
myristoyl-[acyl-carrier protein] + 2 reduced ferredoxin [iron-sulfur] cluster+ O2 + 2 H+
(Z)-tetradec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
-
?
palmitoyl-[acyl-carrier protein] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
(Z)-hexadec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
stearoyl-[acyl-carrier protein] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
(Z)-octadec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
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?
additional information
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the fatty acids 16:3DELTA7,10,13, 20:2DELTA8,11, 20:3DELTA8,11,14 and 20:4DELTA5,8,11,14 do not serve as substrates
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(Z)-hexadec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
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-
?
palmitoyl-[acyl-carrier protein] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
(Z)-hexadec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
no desaturation activity with palmitoyl-CoA ester
DELTA6-hexadecenoyl-[acyl-carrier protein] i.e. sapienoyl-[acyl-carrier-protein] i.e. (Z)-hexadec-6-enoyl-[acyl-carrier protein]
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?
palmitoyl-[acyl-carrier protein] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+
(Z)-hexadec-6-enoyl-[acyl-carrier protein] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
no desaturation activity with palmitoyl-CoA. DELTA6 desaturase activity is approximately 7-fold higher using palmitoyl-[acyl-carrier protein] as substrate rather than either myristoyl-[acyl-carrier protein] or stearoyl-[acyl-carrier protein]
DELTA6-hexadecenoyl-[acyl-carrier protein] i.e. sapienoyl-[acyl-carrier-protein] i.e. (Z)-hexadec-6-enoyl-[acyl-carrier protein]
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?