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Single-channel recordings reveal that norfluoxetine inhibits the two-pore domain K+ channel TREK-2 by a complex array of mechanisms.


The sarcomeric titin springs and accessory proteins modulate muscle force and mechanical signaling at the N2A signalosome.


Proks et al. show that the antidepressant norfluoxetine affects the behavior of TREK-2 two-pore domain K+ channels by regulating the equilibrium between their open and closed states as well as their filter gating.

In Special Collection: Neuroscience Collection 2022

Smith et al. use a novel technique for direct measurement of solute transport from cerebrospinal fluid to brain interstitial fluid. Contrary to previous suggestions, they find no evidence for a role of aquaporin-4 in this process of extracellular transport in the central nervous system.

Hariharan and Guan find that binding of either melibiose or Na+ to their transporter, MelB, may favor MelB open states, while cooperative binding may trigger dehydration and cavity closure, thus enforcing cotransport. Cooperative binding is the core mechanism for their cotransport.

In Special Collection: Ion Channels Update 2022

Yang et al. study changes in the activity of the kidney ENaC and ROMK channels in response to variations in K+ levels in the diet. Na+ channel activity and localization changed in response to varying K+ levels, suggesting adaptation in the nephron to compensate for excess or lack of K+.

In Special Collection: Ion Channels Update 2022

Moise et al. develop a finite element model of the intercalated disk (ID) that takes into account the nanoscale structure. Incorporating these details in a cardiac tissue model predicts that alterations in ID structure can affect electrical conduction in the heart.

Lopez-Redondo et al. use cryo-EM and molecular dynamics to evaluate the effects of Zn2+ binding on the conformation and dynamics of the zinc/proton antiporter YiiP. Removal of Zn2+ leads to enhanced conformational dynamics and causes a transition to an intermediate state in the transport cycle.

Han et al. study the effect of primary cardiac hypertrophy on cardiac mechano-energetics. Using isolated cardiac tissues, they show that despite impaired contractile performance, cardiac mechanical efficiency is preserved in hypertrophic hearts.


Rook et al. assess how mutations in acid-sensing ion channel 1 (ASIC1) affect channel desensitization. They establish that, contrary to previous reports, a glutamine to glycine substitution does not abolish desensitization, but causes complex pH-dependent effects on channel desensitization.

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