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Distinct gating modes determine the biphasic relaxation of NMDA receptor currents
Journal article   Peer reviewed

Distinct gating modes determine the biphasic relaxation of NMDA receptor currents

Wei Zhang, James R Howe and Gabriela K Popescu
Nature neuroscience, Vol.11(12), pp.1373-1375
12/2008
DOI: 10.1038/nn.2214
PMCID: PMC2587015
PMID: 18953348
url
https://www.ncbi.nlm.nih.gov/pmc/articles/2587015View
Open Access

Abstract

Following brief stimulation, macroscopic NMDA receptor currents decay with biphasic kinetics that is believed to reflect glutamate dissociation and receptor desensitization. We found that the fast and slow decay components arise from the simultaneous deactivation of receptor populations that gate with short and long openings, respectively. Because individual receptors switched infrequently between gating modes, the relaxation time course was largely determined by the proportion of channels in each gating mode at the time of stimulation.

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