6cnj

Structural highlights

Disease

[ACHA4_HUMAN] Autosomal dominant nocturnal frontal lobe epilepsy. The disease is caused by mutations affecting the gene represented in this entry. [ACHB2_HUMAN] Defects in CHRNB2 are the cause of nocturnal frontal lobe epilepsy type 3 (ENFL3) [MIM:605375]. ENFL3 is an autosomal dominant epilepsy characterized by nocturnal seizures with hyperkinetic automatisms and poorly organized stereotyped movements.^{[1] [2]}

Function

[ACHA4_HUMAN] After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane permeable to sodium ions.^[3] [ACHB2_HUMAN] After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane permeable to sodiun ions.^[4]

References

1. ↑ De Fusco M, Becchetti A, Patrignani A, Annesi G, Gambardella A, Quattrone A, Ballabio A, Wanke E, Casari G. The nicotinic receptor beta 2 subunit is mutant in nocturnal frontal lobe epilepsy. Nat Genet. 2000 Nov;26(3):275-6. PMID:11062464 doi:10.1038/81566
2. ↑ Phillips HA, Favre I, Kirkpatrick M, Zuberi SM, Goudie D, Heron SE, Scheffer IE, Sutherland GR, Berkovic SF, Bertrand D, Mulley JC. CHRNB2 is the second acetylcholine receptor subunit associated with autosomal dominant nocturnal frontal lobe epilepsy. Am J Hum Genet. 2001 Jan;68(1):225-31. Epub 2000 Dec 5. PMID:11104662 doi:10.1086/316946
3. ↑ Bondarenko V, Mowrey D, Tillman T, Cui T, Liu LT, Xu Y, Tang P. NMR structures of the transmembrane domains of the alpha4beta2 nAChR. Biochim Biophys Acta. 2012 Feb 14;1818(5):1261-1268. PMID:22361591 doi:10.1016/j.bbamem.2012.02.008
4. ↑ Bondarenko V, Mowrey D, Tillman T, Cui T, Liu LT, Xu Y, Tang P. NMR structures of the transmembrane domains of the alpha4beta2 nAChR. Biochim Biophys Acta. 2012 Feb 14;1818(5):1261-1268. PMID:22361591 doi:10.1016/j.bbamem.2012.02.008