2000
DOI: 10.1016/s0006-3495(00)76653-7
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Charge Motions During the Photocycle of pharaonis Halorhodopsin

Abstract: Oriented gel samples were prepared from halorhodopsin-containing membranes from Natronobacterium pharaonis, and their photoelectric responses to laser flash excitation were measured at different chloride concentrations. The fast component of the current signal displayed a characteristic dependency on chloride concentration, and could be interpreted as a sum of two signals that correspond to the responses at high-chloride and no-chloride, but high-sulfate, concentration. The chloride concentration-dependent tra… Show more

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Cited by 50 publications
(77 citation statements)
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“…Thus, the membrane potential appears to have significant effects on the Cl − transfer in the CP channel compared to those in the EC channel. This result might be consistent with previous reports: Ludmann et al [15] and Muneyuki et al [19] detected much smaller electrogenicity during the NpHR′ formation compared to that during the O formation. These observations may reflect the difference in dielectric constants of CP and EC channels.…”
Section: Electrogenic Processes During the Nphr Photocyclesupporting
confidence: 94%
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“…Thus, the membrane potential appears to have significant effects on the Cl − transfer in the CP channel compared to those in the EC channel. This result might be consistent with previous reports: Ludmann et al [15] and Muneyuki et al [19] detected much smaller electrogenicity during the NpHR′ formation compared to that during the O formation. These observations may reflect the difference in dielectric constants of CP and EC channels.…”
Section: Electrogenic Processes During the Nphr Photocyclesupporting
confidence: 94%
“…However, the previous flashinduced voltage measurements led to the conclusion that O does not appear in the Cl − transport photocycle [18]. On the other hand, other voltage measurements detected large electrogenicity during O formation [15,19]. These data support the model that Cl − release is associated with O formation.…”
Section: Introductionmentioning
confidence: 63%
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