Protein XRP2 (RP2) ELISA Kit for Human

The RP2 locus has been implicated as one cause of X-linked retinitis pigmentosa. The predicted gene product shows homology with human cofactor C, a protein involved in the ultimate step of beta-tubulin folding. Progressive retinal degeneration may therefore be due to the accumulation of incorrectly-folded photoreceptor or neuron-specific tubulin isoforms followed by progressive cell death [provided by RefSeq, Jul 2008]

RP2: Acts as a GTPase-activating protein (GAP) involved in trafficking between the Golgi and the ciliary membrane. Involved in localization of proteins, such as NPHP3, to the cilium membrane by inducing hydrolysis of GTP ARL3, leading to the release of UNC119 (or UNC119B). Acts as a GTPase-activating protein (GAP) for tubulin in concert with tubulin-specific chaperone C, but does not enhance tubulin heterodimerization. Acts as guanine nucleotide dissociation inhibitor towards ADP-ribosylation factor-like proteins. Defects in RP2 are the cause of retinitis pigmentosa type 2 (RP2); also known as X-linked retinitis pigmentosa 2 (XLRP-2). RP leads to degeneration of retinal photoreceptor cells. Patients typically have night vision blindness and loss of midperipheral visual field. As their condition progresses, they lose their far peripheral visual field and eventually central vision as well. Belongs to the TBCC family.

Protein type: Chaperone

Chromosomal Location of Human Ortholog: Xp11.3

Cellular Component: centriole; cilium; cytoplasm; cytoplasmic vesicle; Golgi apparatus; nuclear body; nucleoplasm; plasma membrane

Molecular Function: actin binding; GTP binding; GTPase activator activity; protein binding; unfolded protein binding

Biological Process: cytoskeleton organization; positive regulation of GTPase activity; post-chaperonin tubulin folding pathway; post-Golgi vesicle-mediated transport; protein folding; protein transport; visual perception

Disease: Retinitis Pigmentosa 2