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. 2013 Dec 17;170(8):1607–1651. doi: 10.1111/bph.12447
Nomenclature HCN1 HCN2 HCN3 HCN4
HGNC, UniProt HCN1, O60741 HCN2, Q9UL51 HCN3, Q9P1Z3 HCN4, Q9Y3Q4
Activators cAMP > cGMP (both weak) cAMP > cGMP – cAMP > cGMP
Inhibitors Cs+, ivabradine, ZD7288 Cs+, ivabradine, ZD7288 Cs+, ivabradine, ZD7288 Cs+, ivabradine, ZD7288