Affiliation: | (1) Molecular Graphics Unit, Bath University, BA2 7AY Bath, UK;(2) Molecular Neuroscience Group, Department of Biochemistry, Bath University, BA2 7AY Bath, UK;(3) MRC Molecular Neurobiology Unit, MRC Center, CB2 2QH Cambridge, UK;(4) Zoology Department, University of Cambridge, CB3 2JK Cambridge, UK |