Coupled control of desensitization and gating by the ligand binding domain of glutamate receptors.

Abstract excerpt

The kinetics of ligand gated ion channels are tuned to permit diverse roles in cellular signaling. To follow high-frequency excitatory synaptic input, postsynaptic AMPA-type glutamate receptors must recover rapidly from desensitization. Chimeras between AMPA and the related kainate receptors demonstrate that the ligand binding domains alone control the lifetime of the desensitized state. Mutation of nonconserved...

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