CRB1

CRB1
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	4UU5
Identifiers
Aliases	CRB1, LCA8, RP12, crumbs 1, cell polarity complex component, crumbs cell polarity complex component 1, CRB1-B, CRB1-C, CRB1-A
External IDs	OMIM: 604210; MGI: 2136343; HomoloGene: 8092; GeneCards: CRB1; OMA:CRB1 - orthologs
Gene location (Human)
Chr.	Chromosome 1 (human)
End	197,478,455 bp
Gene location (Mouse)
Chr.	Chromosome 1 (mouse)
End	139,377,100 bp
RNA expression pattern
	Top expressed in
	ganglionic eminence; ; ventricular zone; ; endothelial cell; ; cerebellar hemisphere; ; right hemisphere of cerebellum; ; amygdala; ; caudate nucleus; ; anterior cingulate cortex; ; right frontal lobe; ; nucleus accumbens;
	Top expressed in
	neural layer of retina; ; retinal pigment epithelium; ; epithelium of lens; ; photoreceptor layer of retina; ; zygote; ; secondary oocyte; ; pineal gland; ; substantia nigra; ; lumbar subsegment of spinal cord; ; primary oocyte;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	calcium ion binding; protein binding;
Cellular component	integral component of membrane; extracellular region; microvillus; plasma membrane; apical plasma membrane; membrane; photoreceptor inner segment; protein-containing complex;
Biological process	establishment or maintenance of cell polarity; cell-cell signaling; membrane organization; plasma membrane organization; eye photoreceptor cell development; heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules; establishment or maintenance of epithelial cell apical/basal polarity;
	Sources:Amigo / QuickGO
Orthologs
	23418
	170788
	ENSG00000134376
	ENSMUSG00000063681
	P82279
	Q8VHS2
	NM_001193640; NM_001257965; NM_001257966; NM_012076; NM_201253
	NM_133239
	NP_001180569; NP_001244894; NP_001244895; NP_957705
	NP_573502
	Wikidata
View/Edit Human	View/Edit Mouse

Crumbs homolog 1 is a protein that in humans is encoded by the CRB1 gene.^[5]^[6]^[7]

This gene encodes a protein which is similar to the Drosophila crumbs protein and localizes to the inner segment of mammalian photoreceptors. In Drosophila, crumbs localizes to the stalk of the fly photoreceptor and may be a component of the molecular scaffold that controls proper development of polarity in the eye. Mutations in this gene are associated with a severe form of retinitis pigmentosa, RP12, and with Leber congenital amaurosis. Alternatively spliced transcript variants have been observed but their full-length nature has yet to be determined.^[7] One small study suggests that mutations in this gene are associated with keratoconus in patients that already have Leber's congenital amaurosis.^[8]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000134376 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000063681 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ den Hollander AI, van Driel MA, de Kok YJ, van de Pol DJ, Hoyng CB, Brunner HG, Deutman AF, Cremers FP (Jul 1999). "Isolation and mapping of novel candidate genes for retinal disorders using suppression subtractive hybridization". Genomics. 58 (3): 240–9. doi:10.1006/geno.1999.5823. PMID 10373321.
^ den Hollander AI, ten Brink JB, de Kok YJ, van Soest S, van den Born LI, van Driel MA, van de Pol DJ, Payne AM, Bhattacharya SS, Kellner U, Hoyng CB, Westerveld A, Brunner HG, Bleeker-Wagemakers EM, Deutman AF, Heckenlively JR, Cremers FP, Bergen AA (Oct 1999). "Mutations in a human homologue of Drosophila crumbs cause retinitis pigmentosa (RP12)". Nat Genet. 23 (2): 217–21. doi:10.1038/13848. PMID 10508521. S2CID 11578020.
^ ^a ^b "Entrez Gene: CRB1 crumbs homolog 1 (Drosophila)".
^ McMahon TT, Kim LS, Fishman GA, Stone EM, Zhao XC, Yee R, Malicki J (April 2009). "CRB1Gene Mutations Are Associated with Keratoconus in Patients with Leber Congenital Amaurosis". Invest. Ophthalmol. Vis. Sci. 50 (7): 3185–7. doi:10.1167/iovs.08-2886. PMID 19407021.

External links

GeneReviews/NIH/NCBI/UW entry on Retinitis Pigmentosa Overview
Human CRB1 genome location and CRB1 gene details page in the UCSC Genome Browser.

den Hollander AI, Davis J, van der Velde-Visser SD, et al. (2005). "CRB1 mutation spectrum in inherited retinal dystrophies". Hum. Mutat. 24 (5): 355–69. doi:10.1002/humu.20093. PMID 15459956. S2CID 40014453.
van Soest S, Ingeborgh van den Born L, Gal A, et al. (1995). "Assignment of a gene for autosomal recessive retinitis pigmentosa (RP12) to chromosome 1q31-q32.1 in an inbred and genetically heterogeneous disease population". Genomics. 22 (3): 499–504. doi:10.1006/geno.1994.1422. PMID 8001962.
van Soest S, te Nijenhuis S, van den Born LI, et al. (1996). "Fine mapping of the autosomal recessive retinitis pigmentosa locus (RP12) on chromosome 1q; exclusion of the phosducin gene (PDC)". Cytogenet. Cell Genet. 73 (1–2): 81–5. doi:10.1159/000134313. PMID 8646891.
Lotery AJ, Jacobson SG, Fishman GA, et al. (2001). "Mutations in the CRB1 gene cause Leber congenital amaurosis". Arch. Ophthalmol. 119 (3): 415–20. doi:10.1001/archopht.119.3.415. PMID 11231775.
den Hollander AI, Heckenlively JR, van den Born LI, et al. (2001). "Leber Congenital Amaurosis and Retinitis Pigmentosa with Coats-like Exudative Vasculopathy Are Associated with Mutations in the Crumbs Homologue 1 (CRB1) Gene". Am. J. Hum. Genet. 69 (1): 198–203. doi:10.1086/321263. PMC 1226034. PMID 11389483.
Lotery AJ, Malik A, Shami SA, et al. (2001). "CRB1 mutations may result in retinitis pigmentosa without para-arteriolar RPE preservation". Ophthalmic Genet. 22 (3): 163–9. doi:10.1076/opge.22.3.163.2222. PMID 11559858. S2CID 38623616.
den Hollander AI, Johnson K, de Kok YJ, et al. (2002). "CRB1 has a cytoplasmic domain that is functionally conserved between human and Drosophila". Hum. Mol. Genet. 10 (24): 2767–73. doi:10.1093/hmg/10.24.2767. PMID 11734541.
Izaddoost S, Nam SC, Bhat MA, et al. (2002). "Drosophila Crumbs is a positional cue in photoreceptor adherens junctions and rhabdomeres". Nature. 416 (6877): 178–83. doi:10.1038/nature720. PMID 11850624. S2CID 4334240.
Roh MH, Makarova O, Liu CJ, et al. (2002). "The Maguk protein, Pals1, functions as an adapter, linking mammalian homologues of Crumbs and Discs Lost". J. Cell Biol. 157 (1): 161–72. doi:10.1083/jcb.200109010. PMC 2173254. PMID 11927608.
Gerber S, Perrault I, Hanein S, et al. (2003). "A novel mutation disrupting the cytoplasmic domain of CRB1 in a large consanguineous family of Palestinian origin affected with Leber congenital amaurosis". Ophthalmic Genet. 23 (4): 225–35. doi:10.1076/opge.23.4.225.13879. PMID 12567265. S2CID 25525786.
Khaliq S, Abid A, Hameed A, et al. (2003). "Mutation screening of Pakistani families with congenital eye disorders". Exp. Eye Res. 76 (3): 343–8. doi:10.1016/S0014-4835(02)00304-4. PMID 12573663.
Jacobson SG, Cideciyan AV, Aleman TS, et al. (2003). "Crumbs homolog 1 (CRB1) mutations result in a thick human retina with abnormal lamination". Hum. Mol. Genet. 12 (9): 1073–8. doi:10.1093/hmg/ddg117. PMID 12700176.
Bernal S, Calaf M, Garcia-Hoyos M, et al. (2003). "Study of the involvement of the RGR, CRPB1, and CRB1 genes in the pathogenesis of autosomal recessive retinitis pigmentosa". J. Med. Genet. 40 (7): e89. doi:10.1136/jmg.40.7.e89. PMC 1735523. PMID 12843338.
Hanein S, Perrault I, Gerber S, et al. (2004). "Leber congenital amaurosis: comprehensive survey of the genetic heterogeneity, refinement of the clinical definition, and genotype-phenotype correlations as a strategy for molecular diagnosis" (PDF). Hum. Mutat. 23 (4): 306–17. doi:10.1002/humu.20010. hdl:10400.17/2439. PMID 15024725. S2CID 10313190.
McKay GJ, Clarke S, Davis JA, et al. (2005). "Pigmented paravenous chorioretinal atrophy is associated with a mutation within the crumbs homolog 1 (CRB1) gene". Invest. Ophthalmol. Vis. Sci. 46 (1): 322–8. doi:10.1167/iovs.04-0734. PMID 15623792.
Kantardzhieva A, Gosens I, Alexeeva S, et al. (2005). "MPP5 recruits MPP4 to the CRB1 complex in photoreceptors". Invest. Ophthalmol. Vis. Sci. 46 (6): 2192–201. doi:10.1167/iovs.04-1417. PMID 15914641.
Booij JC, Florijn RJ, ten Brink JB, et al. (2006). "Identification of mutations in the AIPL1, CRB1, GUCY2D, RPE65, and RPGRIP1 genes in patients with juvenile retinitis pigmentosa". J. Med. Genet. 42 (11): e67. doi:10.1136/jmg.2005.035121. PMC 1735944. PMID 16272259.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000134376 – Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000063681 – Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid10373321-5] Hollander AI, van Driel MA, de Kok YJ, van de Pol DJ, Hoyng CB, Brunner HG, Deutman AF, Cremers FP (Jul 1999). "Isolation and mapping of novel candidate genes for retinal disorders using suppression subtractive hybridization". Genomics. 58 (3): 240–9. doi:10.1006/geno.1999.5823. PMID 10373321.

[pmid10508521-6] Hollander AI, ten Brink JB, de Kok YJ, van Soest S, van den Born LI, van Driel MA, van de Pol DJ, Payne AM, Bhattacharya SS, Kellner U, Hoyng CB, Westerveld A, Brunner HG, Bleeker-Wagemakers EM, Deutman AF, Heckenlively JR, Cremers FP, Bergen AA (Oct 1999). "Mutations in a human homologue of Drosophila crumbs cause retinitis pigmentosa (RP12)". Nat Genet. 23 (2): 217–21. doi:10.1038/13848. PMID 10508521. S2CID 11578020.

[entrez-7] "Entrez Gene: CRB1 crumbs homolog 1 (Drosophila)".

[pmid19407021-8] McMahon TT, Kim LS, Fishman GA, Stone EM, Zhao XC, Yee R, Malicki J (April 2009). "CRB1Gene Mutations Are Associated with Keratoconus in Patients with Leber Congenital Amaurosis". Invest. Ophthalmol. Vis. Sci. 50 (7): 3185–7. doi:10.1167/iovs.08-2886. PMID 19407021.

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References

External links

Further reading