{"symbol":"OPN1LW","synonyms":["RCP","ROP"],"name":"opsin 1 (cone pigments), long-wave-sensitive","description":"This gene encodes for a light absorbing visual pigment of the opsin gene family. The encoded protein is called red cone photopigment or long-wavelength sensitive opsin. Opsins are G-protein coupled receptors with seven transmembrane domains, an N-terminal extracellular domain, and a C-terminal cytoplasmic domain. This gene and 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 partial, protanopic colorblindness. [provided by RefSeq, Jul 2008]","ncbiEntrezGeneId":5956,"ncbiEntrezGeneUrl":"http://www.ncbi.nlm.nih.gov/gene/5956","proteins":[{"symbol":"OPSR_HUMAN","href":"/api/1.0/protein/OPSR_HUMAN"}],"hgncRootFamilies":[{"name":"G protein-coupled receptors","href":"/api/1.0/gene_family/G+protein-coupled+receptors"}]}