Aliases for RBP3 Gene
External Ids for RBP3 Gene
Previous GeneCards Identifiers for RBP3 Gene
Interphotoreceptor retinol-binding protein is a large glycoprotein known to bind retinoids and found primarily in the interphotoreceptor matrix of the retina between the retinal pigment epithelium and the photoreceptor cells. It is thought to transport retinoids between the retinal pigment epithelium and the photoreceptors, a critical role in the visual process.The human IRBP gene is approximately 9.5 kbp in length and consists of four exons separated by three introns. The introns are 1.6-1.9 kbp long. The gene is transcribed by photoreceptor and retinoblastoma cells into an approximately 4.3-kilobase mRNA that is translated and processed into a glycosylated protein of 135,000 Da. The amino acid sequence of human IRBP can be divided into four contiguous homology domains with 33-38% identity, suggesting a series of gene duplication events. In the gene, the boundaries of these domains are not defined by exon-intron junctions, as might have been expected. The first three homology domains and part of the fourth are all encoded by the first large exon, which is 3,180 base pairs long. The remainder of the fourth domain is encoded in the last three exons, which are 191, 143, and approximately 740 base pairs long, respectively. [provided by RefSeq, Jul 2008]
GeneCards Summary for RBP3 Gene
RBP3 (Retinol Binding Protein 3) is a Protein Coding gene. Diseases associated with RBP3 include Retinitis Pigmentosa 66 and Rbp3-Related Retinitis Pigmentosa. Among its related pathways are Metabolism of fat-soluble vitamins and Signaling by GPCR. GO annotations related to this gene include serine-type peptidase activity and retinal binding.
UniProtKB/Swiss-Prot for RBP3 Gene
IRBP shuttles 11-cis and all trans retinoids between the retinol isomerase in the pigment epithelium and the visual pigments in the photoreceptor cells of the retina.