Abstract
This review provides a brief description of the structure and transport function of the recently discovered family of retinal-containing Na+-translocating rhodopsins. The main emphasis is put on the kinetics of generation of electric potential difference in the membrane during a single transporter turnover. According to the proposed transport mechanism of Na+-rhodopsin, the driving force for the Na+ translocation from the cytoplasm is the local electric field created by the H+ movement from the Schiff base.
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