The contact region between three domains of the extracellular loop of ASIC1a is critical for channel function.

Abstract excerpt

Acid-sensing ion channels are members of the epithelial Na(+) channel/degenerin family. They are neuronal nonvoltage-gated Na(+) channels that are activated by extracellular acidification. In this study, we investigated the role of a highly conserved region of the extracellular part of ASIC1a that forms the contact between the finger domain, the adjacent beta-ball, and the upper palm domain in ASIC1a. The finger...

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