Figure 1. Direct measurement of Δψ generation by NaR-proteoliposomes adsorbed on a phospholipid-impregnated collodion film.
(A) The medium contained 100 mM KCl (red curve), 100 mM NaCl (blue curve), or 100 mM LiCl (green curve). (B) Photoelectrogenic response of NaR in medium containing 100 mM NaCl shown on a semilogarithmic scale. Roman numbers indicate three steps of Δψ generation.