A succinct summarization of the past ten years of research in the field. * Examines the accumulated knowledge of channel structures and considers how it has advanced. * Provides a historical background and presents an analysis of the structure and function of several types of channels, including potassium, ClC chloride, and sodium ion channels. * Delves into topics such as diversity of potassium channels in prokaryotic and eukaryotic cells, selectivity and permeability of bacterial ion channels, voltage- and mechano-sensing, simulation studies of ion channels using molecular modeling, and the role of bacterial ion channels in cell physiology. * Serves as an important reference for ion channel specialists and as a useful introduction to the topic for nonspecialists in such fields as microbiology, structural and developmental biology, neuroscience, and biophysics who wish to acquaint themselves with these molecules. This title is published by the American Society for Microbiology Press and distributed by Taylor and Francis in rest of world territories.