ATR-FTIR Spectroscopy Revealing the Different Vibrational Modes of the Selectivity Filter Interacting with K<sup>+</sup> and Na<sup>+</sup> in the Open and Collapsed Conformations of the KcsA Potassium ChannelYuji Furutani, Hideki Kandori, Hirofumi Shimizu et al.|The Journal of Physical Chemistry Letters|2012Cited by 36