Does not exhibit calcium-activated chloride channel (CaCC) activity. Can inhibit the activity of ANO1. Shows predominantly an intracellular localization with a weak expression in the cell membrane. Highly expressed in the brain. Intermediate levels in the retina and heart and low levels in the placenta, liver, lung, duodenum, kidney, testis and spleen. In brain areas, highest expression in the frontal and occipital cortices and in the cerebellum. Lower expression in the fetal brain than in the adult brain. The disease is caused by variants affecting the gene represented in this entry. The term 'anoctamin' was coined because these channels are anion selective and have eight (OCT) transmembrane segments. There is some dissatisfaction in the field with the Ano nomenclature because it is not certain that all the members of this family are anion channels or have the 8-transmembrane topology. Belongs to the anoctamin family. Contaminating sequence.