1.3.99.30 1-hydroxylycopene + acceptor - Neurospora crassa 1-hydroxy-3',4'-didehydrolycopene + reduced acceptor - ? 413813 1.3.99.30 1-hydroxyneurosporene + acceptor - Neurospora crassa 1-hydroxylycopene + reduced acceptor - ? 413816 1.3.99.30 15-cis-phytoene + 5 acceptor - Neurospora crassa all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + 5 acceptor - Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + 5 acceptor a decisive reaction for the formation of monocyclic or bicyclic products is the desaturation sequence to lycopene and further on to 3,4-didehydrolycopene. In the nontransformed strain, cyclization of lycopene, which directs the metabolic flux towards astaxanthin, is the dominating reaction. When the gene encoding phytoene desaturase is overexpressed, the five-step desaturation to 3,4-didehydrolycopene is intensified, resulting in an accumulation of torulene and 3-hydroxy-3'-4'-didehydro-beta-psi-caroten-4-one as subsequent products Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + 5 acceptor the enzyme is involved in the carotenoid biosynthesis pathway to beta-carotene and torulene Neurospora crassa all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + 5 acceptor - Phaffia rhodozyma CBS 6938 all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + 5 acceptor a decisive reaction for the formation of monocyclic or bicyclic products is the desaturation sequence to lycopene and further on to 3,4-didehydrolycopene. In the nontransformed strain, cyclization of lycopene, which directs the metabolic flux towards astaxanthin, is the dominating reaction. When the gene encoding phytoene desaturase is overexpressed, the five-step desaturation to 3,4-didehydrolycopene is intensified, resulting in an accumulation of torulene and 3-hydroxy-3'-4'-didehydro-beta-psi-caroten-4-one as subsequent products Phaffia rhodozyma CBS 6938 all-trans-3,4-didehydrolycopene + 5 reduced acceptor - ? 413171 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Blakeslea trispora all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa CBS 708.71 all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa 74-OR23-1A all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa DSM 1257 all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa ATCC 24698 all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 15-cis-phytoene + acceptor - Neurospora crassa FGSC 987 all-trans-phytofluene + reduced acceptor - ? 413856 1.3.99.30 all-trans-lycopene + 1 acceptor - Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 1 reduced acceptor - ? 414258 1.3.99.30 all-trans-lycopene + 1 acceptor - Phaffia rhodozyma CBS 6938 all-trans-3,4-didehydrolycopene + 1 reduced acceptor - ? 414258 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Blakeslea trispora all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa CBS 708.71 all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa 74-OR23-1A all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa DSM 1257 all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa ATCC 24698 all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-lycopene + acceptor - Neurospora crassa FGSC 987 all-trans-3,4-didehydrolycopene + reduced acceptor - ? 414259 1.3.99.30 all-trans-neurosporene + 2 acceptor - Neurospora crassa all-trans-3,4-didehydrolycopene + 2 reduced acceptor - ? 414260 1.3.99.30 all-trans-neurosporene + 2 acceptor - Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 2 reduced acceptor - ? 414260 1.3.99.30 all-trans-neurosporene + 2 acceptor - Phaffia rhodozyma CBS 6938 all-trans-3,4-didehydrolycopene + 2 reduced acceptor - ? 414260 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Blakeslea trispora all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa CBS 708.71 all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa 74-OR23-1A all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa DSM 1257 all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa ATCC 24698 all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-neurosporene + acceptor - Neurospora crassa FGSC 987 all-trans-lycopene + reduced acceptor - ? 413252 1.3.99.30 all-trans-phytofluene + 4 acceptor - Neurospora crassa all-trans-3,4-didehydrolycopene + 4 reduced acceptor - ? 414262 1.3.99.30 all-trans-phytofluene + 4 acceptor - Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 4 reduced acceptor - ? 414262 1.3.99.30 all-trans-phytofluene + 4 acceptor - Phaffia rhodozyma CBS 6938 all-trans-3,4-didehydrolycopene + 4 reduced acceptor - ? 414262 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Blakeslea trispora all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa CBS 708.71 all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa 74-OR23-1A all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa DSM 1257 all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa ATCC 24698 all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-phytofluene + acceptor - Neurospora crassa FGSC 987 all-trans-zeta-carotene + reduced acceptor - ? 414263 1.3.99.30 all-trans-zeta-carotene + 3 acceptor - Neurospora crassa all-trans-3,4-didehydrolycopene + 3 reduced acceptor - ? 414264 1.3.99.30 all-trans-zeta-carotene + 3 acceptor - Phaffia rhodozyma all-trans-3,4-didehydrolycopene + 3 reduced acceptor - ? 414264 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Blakeslea trispora all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa CBS 708.71 all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa 74-OR23-1A all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa DSM 1257 all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa ATCC 24698 all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 all-trans-zeta-carotene + acceptor - Neurospora crassa FGSC 987 all-trans-neurosporene + reduced acceptor - ? 414265 1.3.99.30 additional information gamma-carotene and 1,1'-dihydroxylycopene are not accepted as substrate Neurospora crassa ? - ? 89 1.3.99.30 additional information catalyzes both enzymatic conversion of phytoene to lycopene (fourth step product) and 3,4-didehydrolycopene (fifth step product), reactions of EC 1.3.99.30 and EC 1.3.99.31, respectively Sporidiobolus pararoseus ? - ? 89 1.3.99.30 additional information catalyzes both enzymatic conversion of phytoene to lycopene (fourth step product) and 3,4-didehydrolycopene (fifth step product), reactions of EC 1.3.99.30 and EC 1.3.99.31, respectively Sporidiobolus pararoseus CGMCC 2.5280 ? - ? 89