@article{MTMT:3192921, title = {Regulation of Na+ channel inactivation by the DIII and DIV voltage-sensing domains.}, url = {https://m2.mtmt.hu/api/publication/3192921}, author = {Hsu, EJ and Zhu, W and Schubert, AR and Voelker, T and Varga, Zoltán and Silva, JR}, doi = {10.1085/jgp.201611678}, journal-iso = {J GEN PHYSIOL}, journal = {JOURNAL OF GENERAL PHYSIOLOGY}, volume = {149}, unique-id = {3192921}, issn = {0022-1295}, abstract = {Functional eukaryotic voltage-gated Na+ (NaV) channels comprise four domains (DI-DIV), each containing six membrane-spanning segments (S1-S6). Voltage sensing is accomplished by the first four membrane-spanning segments (S1-S4), which together form a voltage-sensing domain (VSD). A critical NaV channel gating process, inactivation, has previously been linked to activation of the VSDs in DIII and DIV. Here, we probe this interaction by using voltage-clamp fluorometry to observe VSD kinetics in the presence of mutations at locations that have been shown to impair NaV channel inactivation. These locations include the DIII-DIV linker, the DIII S4-S5 linker, and the DIV S4-S5 linker. Our results show that, within the 10-ms timeframe of fast inactivation, the DIV-VSD is the primary regulator of inactivation. However, after longer 100-ms pulses, the DIII-DIV linker slows DIII-VSD deactivation, and the rate of DIII deactivation correlates strongly with the rate of recovery from inactivation. Our results imply that, over the course of an action potential, DIV-VSDs regulate the onset of fast inactivation while DIII-VSDs determine its recovery.}, year = {2017}, eissn = {1540-7748}, pages = {389-403} } @article{MTMT:3070626, title = {Exploring the structure of the voltage-gated Na+ channel by an engineered drug access pathway to the receptor site for local anesthetics}, url = {https://m2.mtmt.hu/api/publication/3070626}, author = {Lukács, Péter and Gawali, Vaibhavkumar S and Cervenka, Rene and Ke, Song and Koenig, Xaver and Rubi, Lena and Zarrabi, Touran and Hilber, Karlheinz and Stary-Weinzinger, Anna and Todt, Hannes}, doi = {10.1074/jbc.M113.541763}, journal-iso = {J BIOL CHEM}, journal = {JOURNAL OF BIOLOGICAL CHEMISTRY}, volume = {289}, unique-id = {3070626}, issn = {0021-9258}, year = {2014}, eissn = {1083-351X}, pages = {21770-21781} } @article{MTMT:3070588, title = {A molecular switch between the outer and the inner vestibules of the voltage-gated Na+ channel}, url = {https://m2.mtmt.hu/api/publication/3070588}, author = {Zarrabi, Touran and Cervenka, Rene and Sandtner, Walter and Lukács, Péter and Koenig, Xaver and Hilber, Karlheinz and Mille, Markus and Lipkind, Gregory M and Fozzard, Harry A and Todt, Hannes}, doi = {10.1074/jbc.M110.132886}, journal-iso = {J BIOL CHEM}, journal = {JOURNAL OF BIOLOGICAL CHEMISTRY}, volume = {285}, unique-id = {3070588}, issn = {0021-9258}, year = {2010}, eissn = {1083-351X}, pages = {39458-39470} }