ENZYME entry: EC 18.104.22.168
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|Zeaxanthin + O(2) <=> (3R)-11-cis-3-hydroxyretinal + (3R)-all-trans-3-hydroxyretinal|
- The enzyme, characterized from the moth Galleria mellonella and the
fruit fly Drosophila melanogaster, is involved in the synthesis of
retinal from dietary caroteoids in insects.
- The enzyme accepts different all-trans carotenoids, including beta-
carotene, alpha-carotene and lutein, and catalyzes the symmetrical
cleavage of the carotenoid and the simultaneous isomerization of only
one of the products to a cis configuration.
- When the substrate is hydroxylated only in one side (as in
cryptoxanthin), the enzyme preferentially isomerizes the hydroxylated
part of the molecule.
- Formerly EC 22.214.171.124.
|PRIAM enzyme-specific profiles||126.96.36.199|
|KEGG Ligand Database for Enzyme Nomenclature||188.8.131.52|
|IUBMB Enzyme Nomenclature||184.108.40.206|
|MEDLINE||Find literature relating to 220.127.116.11|
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