A STUDY OF ION CHANNELS IN A PHOTOSYNTHETIC MEMBRANE OF PURPLE BACTERIAстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:The present work concerns the mechanism of ion conductivity of photosynthetic membranes. It is shown that the reconstitution of vesicles of photosynthetic membranes (chromatophors) of purple bacteria Rhodospirillum rubrum into planar bilayer lipid membrane leads to fluctuations of currents showing the existence of channels with predominant amplitude of 230 pS in the presence of 100 mM KCl. Measurements under the conditions of KCl gradient show that this channel is cation selective (P(K)/P(Cl) = 7.2). Voltage inactivation of the channel is demonstrated which is prevented by the treatment with trypsin.