title: Perturbation of the chemotactic tumbling of bacteria.
abstract: The bacterial sensing system has been studied on three levels. First, a quantitative method has been devised for measuring the "action spectrum" of the bacterium in response to a sudden addition of attractant. Second, a technique has been developed for the rapid isolation of mutants defective in the transmission part of the sensing system. Third, a study of the effects of light on the transmission system reveals two components, one which generates, tumbling and another which inhibits it.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D018407:Bacterial Physiological Phenomena; D002633:Chemotaxis / Q000187:drug effects; D005990:Glycerol / Q000494:pharmacology; D006601:Hexoses / Q000494:pharmacology; D008027:Light; D009154:Mutation; D012266:Ribose / Q000494:pharmacology; D013045:Species Specificity
chemical_list: D006601:Hexoses; D012266:Ribose; D005990:Glycerol