>2mng_A mol:protein length:131 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 NSEEIINFNCRKLVASMPLFANADPNFVTSMLTKLRFEVFQPGDYIIREGTIGKKMYFI QHGVVSVLTKGNKETKLADGSYFGEICLLTRGRRTASVRADTYCRLYSLSVDNFNEVLE EYPMMRRAFETVA