| http://www.reactome.org/bio... | rdf:type | biopax3:Pathway | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:comment | Reviewed: D'Eustachio, P, 2009-05-29 07:44:22 | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:comment | Edited: Jassal, B, 2009-05-07 08:25:16 | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:comment | Opsins are light-sensitive, 35-55 kDa membrane-bound G protein-coupled receptors of the retinylidene protein family found in photoreceptor cells of the retina. Five classical groups of opsins are involved in vision, mediating the conversion of a photon of light into an electrochemical signal, the first step in the visual transduction cascade (Terakita A, 2005; Nickle B and Robinson PR, 2007). Another opsin found in the mammalian retina, melanopsin, is involved in circadian rhythms and pupillary reflex but not in image-forming (Hankins MW et al, 2008; Kumbalasiri T and Provencio I, 2005). Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G protein transducin, encoded by GNAT genes, is one of the transducers of a visual impulse that performs the coupling between rhodopsin and cGMP-phosphodiesterase. Defects in GNAT1 are the cause of congenital stationary night blindness autosomal dominant type 3, also known as congenital stationary night blindness Nougaret type. Congenital stationary night blindness is a non-progressive retinal disorder characterized by impaired night vision (Dryja TP et al, 1996). Defects in GNAT2 are the cause of achromatopsia type 4 (ACHM4). Achromatopsia is an autosomal recessively inherited visual disorder that is present from birth and that features the absence of color discrimination (Kohl S et al, 2002). | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:comment | Authored: Jassal, B, 2009-05-07 08:25:16 | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | urn:biopax:UnificationXref:... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | urn:biopax:UnificationXref:... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:xref | http://identifiers.org/pubm... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:dataSource | urn:biopax:Provenance:react... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:dataSource | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:displayName | Opsins | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:organism | http://identifiers.org/taxo... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:pathwayComponent | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:pathwayComponent | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:pathwayOrder | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:pathwayOrder | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:stepProcess | http://www.reactome.org/bio... | lld:biopax3 |
| http://www.reactome.org/bio... | biopax3:pathwayComponent | http://www.reactome.org/bio... | lld:biopax3 |
