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Photopsin
Photopsins
(also known as
Cone opsins
) are the
photoreceptor
proteins
found in the
cone cells
of the
retina
that are the basis of
color vision
. Iodopsin, the cone pigment system in chicken retina, is a close analog of the
visual purple
rhodopsin
that is used in
night vision
. Iodopsin consists of the protein component and a bound
chromophore
,
retinal
.
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