CRB1 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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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]
Retinitis pigmentosa (RP) is a member of a group of genetic disorders called inherited retinal dystrophy (IRD) that cause loss of vision. Symptoms include trouble seeing at night and decreasing peripheral vision. As peripheral vision worsens, people may experience "tunnel vision". Complete blindness is uncommon. Onset of symptoms is generally gradual and often begins in childhood.
Leber congenital amaurosis (LCA) is a rare inherited eye disease that appears at birth or in the first few months of life.
Peripherin-2 is a protein, that in humans is encoded by the PRPH2 gene. Peripherin-2 is found in the rod and cone cells of the retina of the eye. Defects in this protein result in one form of retinitis pigmentosa, an incurable blindness.
Cav1.4 also known as the calcium channel, voltage-dependent, L type, alpha 1F subunit (CACNA1F), is a human gene.
PRP31 pre-mRNA processing factor 31 homolog , also known as PRPF31, is a protein which in humans is encoded by the PRPF31 gene.
Cone-rod homeobox protein is a protein that in humans is encoded by the CRX gene.
Protein XRP2 is a protein that in humans is encoded by the RP2 gene.
Centrosomal protein of 290 kDa is a protein that in humans is encoded by the CEP290 gene. CEP290 is located on the Q arm of chromosome 12.
Aryl-hydrocarbon-interacting protein-like 1 is a protein that in humans is encoded by the AIPL1 gene.
X-linked retinitis pigmentosa GTPase regulator-interacting protein 1 is a protein in the ciliary transition zone that in humans is encoded by the RPGRIP1 gene. RPGRIP1 is a multi-domain protein containing a coiled-coil domain at the N-terminus, two C2 domains and a C-terminal RPGR-interacting domain (RID). Defects in the gene result in the Leber congenital amaurosis (LCA) syndrome and in the eye disease glaucoma.
Tubby-related protein 1 is a protein that in humans is encoded by the TULP1 gene.
Rod outer segment membrane protein 1 is a protein that in humans is encoded by the ROM1 gene.
Oxygen-regulated protein 1 also known as retinitis pigmentosa 1 protein (RP1) is a protein that in humans is encoded by the RP1 gene.
Retinol dehydrogenase 12 is an enzyme that in humans is encoded by the RDH12 gene.
Fascin-2 is a protein that in humans is encoded by the FSCN2 gene.
Nephrocystin-4 is a protein that in humans is encoded by the NPHP4 gene.
Inosine-5'-monophosphate dehydrogenase 1, also known as IMP dehydrogenase 1, is an enzyme that in humans is encoded by the IMPDH1 gene.
Lebercilin, also known as leber congenital amaurosis 5 (LCA5), is a protein that in humans is encoded by the LCA5 gene. This protein is thought to be involved in centrosomal or ciliary functions.
Retinal gene therapy holds a promise in treating different forms of non-inherited and inherited blindness.
Occult macular dystrophy (OMD) is a rare inherited degradation of the retina, characterized by progressive loss of function in the most sensitive part of the central retina (macula), the location of the highest concentration of light-sensitive cells (photoreceptors) but presenting no visible abnormality. "Occult" refers to the degradation in the fundus being difficult to discern. The disorder is called "dystrophy" instead of "degradation" to distinguish its genetic origin from other causes, such as age. OMD was first reported by Y. Miyake et al. in 1989.