Ion occupancy of the selectivity filter controls opening of a cytoplasmic gate in the K2P channel TALK-2
L. C. Neelsen, E. B. Riel, S. Rinne, F.-R. Schmid, B. C. Juers, M. Bedoya, J. P. Langer, B. Eymsh, A. K. Kiper, S. Cordeiro, N. Decher, T. Baukrowitz, M. Schewe
This paper identifies a lower cytoplasmic gate in TALK-2 channels and demonstrates bidirectional coupling between this gate and the selectivity filter gate, showing that ion occupancy and stimuli can influence both gates.
bioRxiv · Nov 22, 2023Biophysics