title: [Sodium as an energy coupling ion].
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D001436:Bacteriorhodopsins / Q000378:metabolism; D001693:Biological Transport, Active; D004734:Energy Metabolism; D012964:Sodium / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D001436:Bacteriorhodopsins; D012964:Sodium