OPN1MW, Official Symbol OPN1MWprovided by HGNC Official Full Name opsin 1, medium wave sensitiveprovided by HGNC Primary source HGNC:HGNC:4206 See related Ensembl:ENSG00000268221 MIM:300821; AllianceGenome:HGNC:4206 Gene type protein coding RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as CBD; GCP; GOP; CBBM; COD5; OPN1MW1 Summary This gene encodes for a light absorbing visual pigment of the opsin gene family. The encoded protein is called green cone photopigment or medium-wavelength sensitive opsin. Opsins are G-protein coupled receptors with seven transmembrane domains, an N-terminal extracellular domain, and a C-terminal cytoplasmic domain. The long-wavelength opsin gene and multiple copies of the medium-wavelength opsin gene are tandemly arrayed on the X chromosome and frequent unequal recombination and gene conversion may occur between these sequences. X chromosomes may have fusions of the medium- and long-wavelength opsin genes or may have more than one copy of these genes. Defects in this gene are the cause of deutanopic colorblindness. [provided by RefSeq, Mar 2009] Expression Low expression observed in reference dataset See more Orthologs mouse all