Phytoene desaturase (3,4-didehydrolycopene-forming) (, 5-step phytoene desaturase, five-step phytoene desaturase, phytoene desaturase (ambiguous), Al-1) is an enzyme with systematic name 15-cis-phytoene:acceptor oxidoreductase (3,4-didehydrolycopene-forming). This enzyme catalyses the following chemical reaction
15-cis-phytoene + 5 acceptor all-trans-3,4-didehydrolycopene + 5 reduced acceptor (overall reaction) (1a) 15-cis-phytoene + acceptor all-trans-phytofluene + reduced acceptor (1b) all-trans-phytofluene + acceptor all-trans-zeta-carotene + reduced acceptor (1c) all-trans-zeta-carotene + acceptor all-trans-neurosporene + reduced acceptor (1d) all-trans-neurosporene + acceptor all-trans-lycopene + reduced acceptor (1e) all-trans-lycopene + acceptor all-trans-3,4-didehydrolycopene + reduced acceptor
This enzyme is involved in carotenoid biosynthesis.
See also Phytoene desaturase (lycopene-forming) Phytoene desaturase (neurosporene-forming) Phytoene desaturase (zeta-carotene-forming) 15-Cis-phytoene desaturase
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