RBP3

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]

Description

Retinol binding protein 3

Tissue specificity

Tissue enriched (retina)

Predicted location

Secreted in other tissues

Protein family

Disease related genes
Enzymes
Human disease related genes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Metabolic proteins
Potential drug targets
Predicted secreted proteins
Protein evidence (Kim et al 2014)

Chromosome

10 (47348363 - 47357881)

Ensembl ID

ENSG00000265203  (ver. 103.38)

Orthologs

Mouse Rbp3: ENSMUSG00000041534

UniProt

P10745

neXtProt

NX_P10745

Human splice variants
Mouse splice variants

Protein structure