Article
An intersubunit zinc binding site in rat P2X2 receptors.
The Journal of biological chemistry - 15 Jul 2005
Nagaya Naomi, Tittle Rachel K, Saar Nir, Dellal Shlomo S, Hume Richard I
Abstract excerpt
P2X receptors are ATP-gated ion channels made up of three similar or identical subunits. It is unknown whether ligand binding is intersubunit or intrasubunit, either for agonists or for allosteric modulators. Zinc binds to rat P2X2 receptors and acts as an allosteric modulator, potentiating channel opening. To probe the location of this zinc binding site, P2X2 receptors bearing mutations of the histidines at...
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