Reaction catalyzed by 15-cis-phytoene desaturase (1.3.5.5)
+
+
H2O
=
+
15-cis-phytoene
+
5-n-undecyl-6-hydroxy-4,7-dioxobenzothiazole
+
H2O
=
9,15,9'-tricis-zeta-carotene
+
5-n-undecyl-4,6,7-trihydroxybenzothiazole