Tags: Protein.
Opsin-5 is a protein that in humans is encoded by the OPN5 gene.Opsins are members of the guanine nucleotide-binding protein (G protein)-coupled receptor superfamily. This opsin gene is expressed in the eye brain testes and spinal cord. This gene belongs to the seven-exon subfamily of mammalian opsin genes that includes peropsin (RRH) and retinal G protein coupled receptor (RGR). Like these other seven-exon opsin genes this gene may encode a protein with photoisomerase activity.