https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Mutations in the GABA transporter SLC6A1 cause epilepsy with myoclonic-atonic seizures https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28096 Sat 24 Mar 2018 07:25:00 AEDT ]]> Germline de novo mutations in GNB1 cause severe neurodevelopmental disability, hypotonia, and seizures https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24835 −21), implicating GNB1 as a genome-wide-significant disease-associated gene. The majority of these 13 mutations affect known Gβ binding sites, which suggests that a likely disease mechanism is through the disruption of the protein interface required for Gα-Gβγ interaction (resulting in a constitutively active Gβγ) or through the disruption of residues relevant for interaction between Gβγ and certain downstream effectors (resulting in reduced interaction with the effectors). Strikingly, 8 of the 13 individuals recruited here for a neurodevelopmental disorder have a germline de novo GNB1 mutation that overlaps a set of five recurrent somatic tumor mutations for which recent functional studies demonstrated a gain-of-function effect due to constitutive activation of G protein downstream signaling cascades for some of the affected residues.]]> Sat 24 Mar 2018 07:15:11 AEDT ]]>