Carotenoid
isomerooxygenase
Photoreceptor
dehydrogenase,
isoform C
Neither
inactivation nor
afterpotential
protein G
Unknown
GH05294p
Zeaxanthin
O2
(3R)-11-cis-3-
hydroxyretinal
(3R)-all-trans-
3- Hydroxyretinal
NADPH
H+
NADP
NADP
NADPH
H+
(3R)-11-cis- 3-
hydroxyretinal-
[retinoid-
binding
protein]
(3S)-11-cis- 3-
hydroxyretinal-
[retinoid-
binding
protein]
Retinoid-
binding protein
Retinoid-
binding protein
(3R)-all-
trans-3-
hydroxyretinal-
[retinoid-
binding
protein]
(3R)-all-
trans-3-
hydroxyretinol-
[retinoid-
binding
protein]
(3S)-all-
trans-3-
hydroxyretinol-
[retinoid-
binding
protein]
(3S)-11-cis- 3-
hydroxyretinol-
[retinoid-
binding
protein]
Dietary Sources
The visual cycle
The visual cycle
Cytosol