Phytoene desaturase (lycopene-forming) Tags: Enzyme.Phytoene desaturase (lycopene-forming) (EC 1.3.99.31 4-step phytoene desaturase four-step phytoene desaturase phytoene desaturase (ambiguous) CrtI (ambiguous)) is an enzyme with system name 15-cis-phytoene:acceptor oxidoreductase (lycopene-forming). EC number 1.3.99.31 Learn more... Loading...