OPN3

Opsin-3 is a is_associated_with::protein that, in humans, is encoded by the OPN3 is_associated_with::gene. is_associated_with::Alternative splicing of this gene results in multiple transcript variants encoding different is_associated_with::protein isoforms.

Function
is_associated_with::Opsins are members of the is_associated_with::G protein-coupled receptor superfamily. In addition to the visual opsins, mammals possess several photoreceptive non-visual opsins that are expressed in tissues outside the eye. The opsin-3 gene is strongly expressed in brain and is_associated_with::testis and weakly expressed in liver, is_associated_with::placenta, heart, lung, skeletal muscle, is_associated_with::kidney, and is_associated_with::pancreas. The gene may also be expressed in the is_associated_with::retina. The protein has the canonical features of a photoreceptive opsin protein.