Phytoene desaturase (3,4-didehydrolycopene-forming)

Template:Infobox enzyme Phytoene desaturase (3,4-didehydrolycopene-forming) (Template:EC number, 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 $\rightleftharpoons$ all-trans-3,4-didehydrolycopene + 5 reduced acceptor (overall reaction)

(1a) 15-cis-phytoene + acceptor $\rightleftharpoons$ all-trans-phytofluene + reduced acceptor

(1b) all-trans-phytofluene + acceptor $\rightleftharpoons$ all-trans-zeta-carotene + reduced acceptor

(1c) all-trans-zeta-carotene + acceptor $\rightleftharpoons$ all-trans-neurosporene + reduced acceptor

(1d) all-trans-neurosporene + acceptor $\rightleftharpoons$ all-trans-lycopene + reduced acceptor

(1e) all-trans-lycopene + acceptor $\rightleftharpoons$ 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

External links

• Template:MeshName