A number of ELISA Kits are available that target hyperpolarization activated cyclic nucleotide-gated potassium channel 4, an alias of the protein, hyperpolarization activated cyclic nucleotide gated potassium channel 4. The human protein, encoded by the gene HCN4, is a member of the Potassium channel HCN family. The protein's cellular localization is indicated to be membrane-associated. Additional synonyms or past names for this protein may include: SSS2. Homology is conserved in other species, such as Mouse, Rat, Frog.