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Structural revelations of the human proton channel

The voltage-gated proton channel, HV1, is notoriously unique among ion channels (1), and plays key roles in the health and disease of diverse tissues and species (2). Li et al. (3) combine biochemical, computational, and electron paramagnetic resonance (EPR) spectroscopic approaches to shed light on structural aspects of the human proton channel, hHV1. Their results advance the field in several key areas, culminating in a bold new model for gating.