BACTERIAL CHEMOTAXIS - A FIELD IN MOTION

Many different types of studies are being combined to provide an incre asingly detailed picture of the bacterial chemotaxis system. The struc tures of periplasmic receptors and a cytoplasmic response regulator, a long with structures of domains of a membrane receptor, a receptor-mod ifying enzyme and a cytoplasmic histidine kinase, have been determined . These structures provide a basis for Other work which is likely to o pen up new structural avenues.