Unravelling the conformational plasticity of the extracellular domain of a prokaryotic nAChR homologue in solution by NMR.

: Pentameric ligand-gated ion channels (pLGICs) of the Cys loop family are transmembrane glycoproteins implicated in a variety of biological functions. Here, we present a solution NMR study of the extracellular domain of a prokaryotic pLGIC homologue from the bacterium Gloeobacter violaceus that is found to be a monomer in solution.