1.3.99.37: 1-hydroxy-2-isopentenylcarotenoid 3,4-desaturase
This is an abbreviated version!
For detailed information about 1-hydroxy-2-isopentenylcarotenoid 3,4-desaturase, go to the full flat file.
Reaction
Synonyms
c0507, CrtD, DDD_2394, gamma-carotene desaturase, hydroxyneurosporene desaturase
ECTree
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Substrates Products
Substrates Products on EC 1.3.99.37 - 1-hydroxy-2-isopentenylcarotenoid 3,4-desaturase
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REACTION DIAGRAM
1,1'-dihydroxy-3,4-didehydrolycopene + acceptor
1,1'-dihydroxy-3,4,3',4'-tetradehydrolycopene + reduced acceptor
-
38% conversion
-
?
1,1'-dihydroxyneurosporene + acceptor
1'-hydroxydemethylspheroidene + reduced acceptor
-
39% conversion
-
?
1-hydroxy-3',4'-didehydrolycopene + acceptor
1'-hydroxy-3,4,3',4'-tetradehydrolycopene + reduced acceptor
-
28% conversion
-
?
1-hydroxy-neurosporene + acceptor
demethylspheroidene + reduced acceptor
-
47% conversion
-
?
1-hydroxylycopene + acceptor
1-hydroxy-3,4-didehydrolycopene + reduced acceptor
-
33% conversion
-
?
1-methoxy-1'-hydroxy-3,4-didehydrolycopene + acceptor
1-methoxy-1'-hydroxy-3,4,3',4'-tetradehydrolycopene + reduced acceptor
-
37% conversion
-
r
3,4-didehydrorhodopin + acceptor
3,4,3',4'-tetradehydrorhodopin + reduced acceptor
-
asymmetric carotenoid containing 14 conjugated double bonds, produced by molecular variation of CrtD
-
?
anhydrorhodovibrin + acceptor
3',4'-didehydroanhydrorhodovibrin + reduced acceptor
-
asymmetric carotenoid containing 14 conjugated double bonds, produced by molecular variation of CrtD
-
?
dihydroisopentenyldehydrorhodopin + acceptor
isopentenyldehydrorhodopin + reduced acceptor
rhodopin + acceptor
3,4-didehydrorhodopin + reduced acceptor
-
-
-
?
rhodovibrin + acceptor
monodemethylated spirilloxanthin + reduced acceptor
-
-
-
?
bisanhydrobacterioruberin + reduced acceptor
the enzyme is involved in biosynthesis of the C50 carotenoid bacterioruberin
-
-
?
dihydrobisanhydrobacterioruberin + acceptor
bisanhydrobacterioruberin + reduced acceptor
the enzyme forms a double bond at C-3',4'
-
-
?
isopentenyldehydrorhodopin + reduced acceptor
the enzyme is involved in biosynthesis of the C50 carotenoid bacterioruberin
-
-
?
dihydroisopentenyldehydrorhodopin + acceptor
isopentenyldehydrorhodopin + reduced acceptor
the enzyme forms a double bound at C-3,4
-
-
?
?
-
the enzyme forms double bonds at C-3,4 and C-3',4' of the lycopene derivatives
-
-
?
additional information
?
-
-
the enzyme forms double bonds at C-3,4 and C-3',4' of the lycopene derivatives
-
-
?
additional information
?
-
-
variations in carotenoid composition found in the Rhodoplanes species might be due to modified substrate specificity of the carotenogenesis enzymes, CrtC, CrtD, and CrtF. The high content of rhodopin in Rhodoplanes cryptolactis and Rhodoplanes pokkaliisoli indicates low activity of CrtD
-
-
?
additional information
?
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The 3,4-desaturation reaction can only occur with mono-1-hydroxy carotenoids at a psi-end group or with 1,1'-dihydroxy derivatives carrying a 3',4'-double bond. 1-OH-zeta-carotene can also be converted by the desaturase. 1-OH-neurosporene is preferred over 1-OH-lycopene. No substrates are 1'-hydroxydemethylspheroidene, 1-methoxyneurosporene, 1,1'-dihydroxylycopene
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-
?