PMID- 28459106 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240313 IS - 2398-502X (Print) IS - 2398-502X (Electronic) IS - 2398-502X (Linking) VI - 2 DP - 2017 Mar 17 TI - Functional assessment of the NMDA receptor variant GluN2A (R586K). PG - 20 LID - 10.12688/wellcomeopenres.10985.2 [doi] LID - 20 AB - Background: The N-methyl-D-aspartate receptor (NMDAR) is an ionotropic glutamate receptor that has important roles in synaptogenesis, synaptic transmission, and synaptic plasticity. Recently, a large number of rare genetic variants have been found in NMDAR subunits in people with neurodevelopmental disorders, and also in healthy individuals. One such is the GluN2A(R586K) variant, found in a person with intellectual disability. Identifying the functional consequences, if any, of such variants allows their potential contribution to pathogenesis to be assessed. Here, we assessed the effect of the GluN2A(R586K) variant on NMDAR pore properties. Methods: We expressed recombinant NMDARs with and without the GluN2A(R586K) variant in Xenopus laevis oocytes and in primary cultured mouse neurons, and made electrophysiological recordings assessing Mg(2+) block, single-channel conductance, mean open time and current density. Results: The GluN2A(R586K) variant was not found to influence any of the properties assessed. Conclusions: Our findings suggest it is unlikely that the GluN2A(R586K) variant contributes to the pathogenesis of neurodevelopmental disorder. FAU - Marwick, Katie F M AU - Marwick KFM AUID- ORCID: 0000-0003-1753-4626 AD - Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK. FAU - Parker, Peter AU - Parker P AD - Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK. FAU - Skehel, Paul AU - Skehel P AD - Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK. FAU - Hardingham, Giles AU - Hardingham G AD - Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK. FAU - Wyllie, David J A AU - Wyllie DJA AUID- ORCID: 0000-0002-4957-6049 AD - Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, UK. LA - eng GR - Wellcome Trust/United Kingdom GR - 102838/Wellcome Trust/United Kingdom GR - G0902044/MRC_/Medical Research Council/United Kingdom PT - Journal Article DEP - 20170317 PL - England TA - Wellcome Open Res JT - Wellcome open research JID - 101696457 PMC - PMC5407442 MID - EMS72386 OTO - NOTNLM OT - EEG OT - NMDAR OT - conductance OT - electrophysiology OT - epilepsy OT - intellectual disability OT - magnesium OT - neurons COIS- Competing interests: No competing interests were disclosed. EDAT- 2017/05/02 06:00 MHDA- 2017/05/02 06:01 PMCR- 2017/04/26 CRDT- 2017/05/02 06:00 PHST- 2017/05/02 06:00 [entrez] PHST- 2017/05/02 06:00 [pubmed] PHST- 2017/05/02 06:01 [medline] PHST- 2017/04/26 00:00 [pmc-release] AID - 10.12688/wellcomeopenres.10985.2 [doi] PST - epublish SO - Wellcome Open Res. 2017 Mar 17;2:20. doi: 10.12688/wellcomeopenres.10985.2.