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Retinal Pigment Epithelium-Specific Protein 65kDa (RPE65) antibody

Details for Product No. ABIN493414
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Antigen
Synonyms RPE56c, si:ch211-198n5.12, 65kDa, A930029L06Rik, LCA2, Mord1, RP20, rd12, mRPE65, sRPE65
Reactivity
Cow (Bovine), Human, Mouse (Murine), Rat (Rattus)
(21), (19), (17), (15), (14), (12)
Host
Rabbit
(18), (10), (5)
Clonality
Polyclonal
Conjugate
Un-conjugated
(3), (3), (1), (1), (1), (1), (1), (1), (1), (1), (1), (1), (1), (1)
Application
ELISA, Western Blotting (WB)
(23), (10), (8), (6), (5), (4), (3), (2), (2)
Pubmed 2 references available
Quantity 0.1 mg
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Catalog No. ABIN493414
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Immunogen Synthetic peptide from Mouse RPE65 protein.
Sequence EVT DNA LVN IYP VGE DYY AC
Isotype IgG
Specificity This antibody labels a 65 kDa protein in Western blot RPE65 samples. It do not cross react to other retinal proteins and have broad cross species reactivity due to their conserved sequence homology.
Purification Affinity Chromatography using immobilized antigen.
Alternative Name RPE65
Background The visual cycle consisting of retinoids, the enzymatic pathway that produces chromophore after light absorption, is located primarily in the retinal pigment epithelium (RPE) and is essential for rod photoreceptor survival. This visual cycle is naturally disrupted in humans with Leber congenital amaurosis (LCA) which primarily caused by mutations in a retinal epithelial specific 6kDa protein (RPE65). The RPE65 is expressed exclusively in central retinal pigment epithelium and appeared to be concentrated in the central retina. The central retinal RPE layer also showed a 4-fold higher retinoid isomerase activity than more peripheral RPE (1). RPE65 is a isomerhydrolase catalyzing the key step in regeneration of 11-cis-retinal, a chromophore for retinal pigment. The regeneration of retinal pigment was faster in cone cells than rod cells as evident by 12-fold higher isomerhydrlase activity (RPE65 activity) in rod enriched chicken RPE compared to cone dominant bovine RPE after normalization of protein based on RPE65 levels (2). RPE65 encodes a 65 kDa protein in microsomes of the retinal epithelium. Several mutations in RPE65 has been noted and described in RPE65 in patients with autosomal recessive, severe, childhood-onset retinal dystrophy. The longest open reading frame for RPE gene (2.4kb) encode a 533 amino acid protein with predicted molecular weight of 61 kDa, the protein after post-translational modification migrates at 65 kDa on reducing SDS- PAGE system. RPE65 sequence is highly conserved among various mammalian species Sequence comparison of RPE with other species suggest. A 4 bp deletion in putative Exxon 5 of the canine RPE65 gene led to an autosomal recessive, early onset and progressive retinal dystrophy in inbred kinship of Swedish briard beagle dogs due to a frame shift mutation resulting in an early stop codon making it an attractive model for human disease. The soluble form of RPE65 binds vitamin A preparing it for conversion to all-trans-retinyl ester via LRAT activity. The membrane bound form binds to all-trans-retinyl-esters making them available for processing by all-cis-retinol a reaction catalyzed by LRAT. The protein also undergo lipid modification during post-translational modification
Alternate names: All-trans-retinyl-palmitate hydrolase, Retinal pigment epithelium-specific 65 kDa protein, Retinoid isomerohydrolase, Retinol isomerase
NCBI Accession NP_000320
UniProt Q91ZQ5
Research Area Signaling, Metabolism, Neurology
Application Notes ELISA. Western Blot (> 1/500). Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
Restrictions For Research Use only
Format Liquid
Concentration 0.51-0.63 mg/mL
Buffer Stabilization buffer
Handling Advice Avoid repeated freezing and thawing.
Storage -20 °C
Storage Comment Store the antibody undiluted (in aliquots) at-20°C.
Expiry Date 12 months
Background publications Jacobson, Aleman, Cideciyan et al.: "Human cone photoreceptor dependence on RPE65 isomerase." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 104, Issue 38, pp. 15123-8, 2007 (PubMed).

Moiseyev, Takahashi, Chen et al.: "RPE65 from cone-dominant chicken is a more efficient isomerohydrolase compared with that from rod-dominant species." in: The Journal of biological chemistry, Vol. 283, Issue 13, pp. 8110-7, 2008 (PubMed).

Validation Images
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