Recombinant human CLIC1 protein

CLIC1 (Chloride intracellular channel 1), also referred to as NCC27, is a member of the highly conserved family of chloride ion channels that function in both soluble and integral membrane forms. This protein is a monomeric protein that contains a redox-active site similar to glutaredoxin; it functions as an anion-selective channel. It forms a dimer when oxidized and is then able to form chloride ion channels in bilayers and vesicles, whereas a reducing environment prevents this from occurring. Recombinant human CLIC1 protein, fused to His-tag at N-terminus, was expressed in E. coli and purified by using conventional chromatography techniques.