A lower X-gate in TASK channels traps inhibitors within the vestibule.
Rödström, K., Kiper, A. K., Zhang, W., Rinné, S., Pike, A., Goldstein, M., ... Carpenter, E. P. (2020). A lower X-gate in TASK channels traps inhibitors within the vestibule. Nature, 582(7812), 443–447.