An cation channel that opens in response to binding by extracellular glutmate, but only if glycine is also bound and the membrane is depolarized. Voltage gating is indirect, due to ejection of bound magnesium from the pore at permissive voltages. [GOC:mah, PMID:10049997]
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C5: Ontology GO: Gene Ontology GO:MF: GO Molecular Function