Regulator G-proteinske signalizacije 18 je protein koji je kod ljudi kodiran RGS18genom.[1][2]
Ovaj gen kodira člana familije regulatora G-proteinske signalizacije. Taj protein sadrži konzervirani 120 aminokiselina dug motiv, koji se naziva RGS domen. RGS18 umanjuje signalnu aktivnost G-proteina putem vezivanja za aktivirane, GTP-vezane G alfa podjedinice, i tako što deluje kao aktivirajući protein GTPaze (GAP), čime povećava stopu konverzije GTP u GDP. Ova hidroliza omogućava G alfa podjedinicama da vežu G beta/gama heterodimere, čime se formiraju neaktivni G-proteinski heterotrimeri, i time se prekida signal. Alternatne transkripcione splajsne varijante ovog gena su poznate, ali nisu detaljno okarakterisane.[2]
↑Park IK, Klug CA, Li K, Jerabek L, Li L, Nanamori M, Neubig RR, Hood L, Weissman IL, Clarke MF (March 2001). „Molecular cloning and characterization of a novel regulator of G-protein signaling from mouse hematopoietic stem cells”. J Biol Chem276 (2): 915–23. DOI:10.1074/jbc.M005947200. PMID11042171.
↑Gagnon, Alison W; Murray David L; Leadley Robert J (July 2002). „Cloning and characterization of a novel regulator of G protein signalling in human platelets”. Cell. Signal. (England) 14 (7): 595–606. DOI:10.1016/S0898-6568(02)00012-8. ISSN0898-6568. PMID11955952.
Literatura
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Gagnon AW, Murray DL, Leadley RJ (2002). „Cloning and characterization of a novel regulator of G protein signalling in human platelets”. Cell. Signal.14 (7): 595–606. DOI:10.1016/S0898-6568(02)00012-8. PMID11955952.
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Aldenhoven J, Chen Y, Moran C (2006). „Assignment of UCK2, ATF3 and RGS18 from human chromosome 1 to porcine chromosomes 4, 9 and 10 with somatic and radiation hybrid panels”. Cytogenet. Genome Res.112 (3–4): 341F. DOI:10.1159/000089896. PMID16484797.
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