All-trans-zeta-carotene desaturase explained

All-trans-zeta-carotene desaturase
Ec Number:	1.3.99.26

All-trans-zeta-carotene desaturase (Crtlb, phytoene desaturase (ambiguous), 2-step phytoene desaturase (ambiguous), two-step phytoene desaturase (ambiguous), CrtI (ambiguous)) is an enzyme with systematic name all-trans-zeta-carotene:acceptor oxidoreductase.^[1] This enzyme catalyses the following chemical reaction

all-trans-zeta-carotene + 2 acceptor

\rightleftharpoons all-trans-lycopene + 2 reduced acceptor (overall reaction)

(1a) all-trans-zeta-carotene + acceptor

\rightleftharpoons all-trans-neurosporene + reduced acceptor

(1b) all-trans-neurosporene + acceptor

\rightleftharpoons all-trans-lycopene + reduced acceptor

This enzyme is involved in carotenoid biosynthesis.

Notes and References

1. Iniesta AA, Cervantes M, Murillo FJ . Cooperation of two carotene desaturases in the production of lycopene in Myxococcus xanthus . The FEBS Journal . 274 . 16 . 4306–14 . August 2007 . 17662111 . 10.1111/j.1742-4658.2007.05960.x . free.