FunctionCan insert into membranes and form chloride ion channels. Channel activity depends on the pH. Membrane insertion seems to be redox-regulated and may occur only under oxydizing conditions. Involved in regulation of the cell cycle.
Tissue specificityExpression is prominent in heart, placenta, liver, kidney and pancreas.
Sequence similaritiesBelongs to the chloride channel CLIC family. Contains 1 GST C-terminal domain.
DomainMembers of this family may change from a globular, soluble state to a state where the N-terminal domain is inserted into the membrane and functions as chloride channel. A conformation change of the N-terminal domain is thought to expose hydrophobic surfaces that trigger membrane insertion.
Post-translational modificationsHydrogen peroxide treatment causes a conformation change, leading to dimerization and formation of an intramolecular disulfide bond between Cys-24 and Cys-59.
Cellular localizationNucleus. Nucleus membrane. Cytoplasm. Cell membrane. Mostly in the nucleus including in the nuclear membrane. Small amount in the cytoplasm and the plasma membrane. Exists both as soluble cytoplasmic protein and as membrane protein with probably a single transmembrane domain.