ID   1.3.99.30
DE   phytoene desaturase (3,4-didehydrolycopene-forming).
AN   5-step phytoene desaturase.
CA   15-cis-phytoene + 5 A = 5 AH2 + all-trans-3,4-didehydrolycopene.
CC   -!- This enzyme is involved in carotenoid biosynthesis and catalyzes up
CC       to five desaturation steps (cf. EC 1.3.99.28, EC 1.3.99.29 and
CC       EC 1.3.99.31).
DR   P48537, CRTI_CERNC ;  P54982, CRTI_PHYB8 ;
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