Membrane potentials in yeast cells measured by direct and indirect methods.
The membrane potential, delta psi, of various yeasts estimated from the distribution of tetraphenylphosphonium cations ranged from -50 to -120 mV, depending on species, incubation conditions and technique of measurement. Values obtained directly with a microelectrode in Endomyces magnusii were consistently lower than those determined indirectly.
D001203:Ascomycota / Q000502:physiology*; D002462:Cell Membrane / Q000502:physiology; D007202:Indicators and Reagents; D007700:Kinetics; D008564:Membrane Potentials; D008839:Microelectrodes; D009861:Onium Compounds; D009943:Organophosphorus Compounds; D012248:Rhodotorula / Q000502:physiology; D012440:Saccharomyces / Q000502:physiology; D012441:Saccharomyces cerevisiae / Q000502:physiology; D004718:Saccharomycetales / Q000502:physiology*; D013045:Species Specificity
D007202:Indicators and Reagents; D009861:Onium Compounds; D009943:Organophosphorus Compounds; C013289:tetraphenylphosphonium