Voltage-gated hydrogen channel 1

UniProtKB accession:  Q3U2S8

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Voltage-gated proton-selective channel that conducts outward proton currents in response to intracellular acidification. Lacks a canonical ion-channel pore domain and mediates proton permeability via its voltage sensor domain (PubMed:16556803, PubMed:19805063, PubMed:22569364, PubMed:23165764, PubMed:24584463). Provides for proton efflux that compensates for electron charge generated by NADPH oxidase activity either in the extracellular or phagosomal compartments, thus enabling the production of high levels of bactericidal reactive oxygen species during the respiratory burst (PubMed:19805063, PubMed:20026664, PubMed:24415791). Opens when the pH of airway surface liquid exceeds 7 and contributes to respiratory epithelial acid secretion to maintain pH in the mucosa (By similarity).