Rhodopin (1,2-dihydro-ψ,ψ-caroten-1-ol) is a

carotenoid Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic compound, organic pigments that are produced by plants and algae, as well as several bacteria, and Fungus, fungi. Carotenoids give the characteristic color to pumpki ...

. It is a major carotenoid of

phototropic Phototropism is the growth of an organism in response to a light stimulus. Phototropism is most often observed in plants, but can also occur in other organisms such as fungi. The cells on the plant that are farthest from the light contain a hor ...

bacteria such as '' Rhodomicrobium vannielii'' and '' Rhodopseudomonas acidophila'' strain 7050.

References

Carotenoids {{Biochem-stub