Glycine hinges with opposing actions at the acetylcholine receptor-channel transmitter binding site.

Abstract excerpt

The extent to which agonists activate synaptic receptor-channels depends on both the intrinsic tendency of the unliganded receptor to open and the amount of agonist binding energy realized in the channel-opening process. We examined mutations of the nicotinic acetylcholine receptor transmitter binding site (α subunit loop B) with regard to both of these parameters. αGly147 is an "activation" hinge where backbone...

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