Anti-BFNC2 antibodies are used in antigen-specific immunodetection in biological samples. The target BFNC2 is a known alias name of the protein potassium voltage-gated channel subfamily Q member 3, encoded by the KCNQ3 gene in humans. This 872-amino acid residue protein is reported to associate with KCNQ2 or KCNQ5 to form a potassium channel with essentially identical properties to the channel underlying the native M-current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. It is localized to the cell membrane of the cell and features ubiquitinated post-translational modifications. In terms of tissue expression, it is reported to be highly expressed in the brain. The term EBN2 is another synonym for BFNC2.