CLCNKB

Anion-selective channel permeable to small monovalent anions with ion selectivity for chloride > bromide > nitrate > iodide. Forms a homodimeric channel where each subunit has its own ion conduction pathway. May conduct double-barreled currents controlled by two types of gates, two fast gates that control each subunit independently and a slow common gate that opens and shuts off both subunits simultaneously. Assembles with the regulatory subunit BSND/Barttin for sorting at the basolateral plasma membrane domain and functional switch to the ion conducting state. CLCNKB:BSND channels display mostly a linear current-voltage relationship controlled by common gate. Mediates chloride conductance along nephron segments, namely the thick ascending limb of Henle's loop, convoluted tubule and the collecting duct, contributing to the maintenance of systemic acid-base and electrolyte homeostasis (By similarity). Conducts chloride currents in the stria vascularis of the inner ear to establish the endocochlear potential necessary for normal hearing..

Function from UniProtKB (P51801), read 2026-09-23. CC BY 4.0.