title: Further evidence for the existence of a membrane potential in Trypanosoma brucei brucei.
abstract: The distribution of 137Cs+, in the presence of valinomycin, has been used to measure the magnitude of the membrane potential (delta psi) in bloodstream forms of Trypanosoma brucei brucei. Values of the delta psi falling in the range -100 mV to -160 mV were observed and the maintenance of this delta psi was sensitive to certain ionophores and protonophores.
mesh_terms: D000818:Animals; D002586:Cesium / Q000378:metabolism; D002712:Chlorides; D008564:Membrane Potentials; D014346:Trypanosoma brucei brucei / Q000378:metabolism / Q000502:physiology*; D014634:Valinomycin / Q000494:pharmacology
chemical_list: D002712:Chlorides; D002586:Cesium; D014634:Valinomycin; C028019:cesium chloride