PR:000000759	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant D553N (human)	hHCN4/var:D553N|potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant 1 (human)|UniProtKB:Q9Y3Q4, Asp-553, CHEBI:50347	NOT	located_in	GO:0005886	plasma membrane			PMID:15123648	EXP	NCBITaxon:9606		UniProtKB_VAR:VAR_026534	20080601	PRO:CNA	
PR:000000759	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant D553N (human)	hHCN4/var:D553N|potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant 1 (human)|UniProtKB:Q9Y3Q4, Asp-553, CHEBI:50347		associated_with_disease_progression	DOID:13884	sick sinus syndrome			PMID:15123648	EXP	NCBITaxon:9606		UniProtKB_VAR:VAR_026534	20080601	PRO:CNA	
PR:000000760	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant S672R (human)	hHCN4/var:S672R|potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant 2 (human)|UniProtKB:Q9Y3Q4, Ser-672, CHEBI:29952		capable_of	GO:0005222	intracellular cAMP-activated cation channel activity			PMID:16407510	EXP	NCBITaxon:9606		UniProtKB_VAR:VAR_026535	20080601	PRO:CNA	
PR:000000760	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant S672R (human)	hHCN4/var:S672R|potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant 2 (human)|UniProtKB:Q9Y3Q4, Ser-672, CHEBI:29952		associated_with_disease_progression	DOID:13884	sick sinus syndrome			PMID:16407510	EXP	NCBITaxon:9606		UniProtKB_VAR:VAR_026535	20080601	PRO:CNA	
PR:000000760	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant S672R (human)	hHCN4/var:S672R|potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 sequence variant 2 (human)|UniProtKB:Q9Y3Q4, Ser-672, CHEBI:29952	altered	capable_of	GO:0022843	voltage-gated cation channel activity	PR:000002604		PMID:16407510	EXP	NCBITaxon:9606		UniProtKB_VAR:VAR_026535	20080601	PRO:CNA	
PR:Q9Y3Q4-1	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 isoform 1 (human)	hHCN4/iso:1		capable_of	GO:0005261	cation channel activity			PMID:10228147	IDA	NCBITaxon:9606		UniProtKB:Q9Y3Q4-1	20080601	PRO:CNA	
PR:Q9Y3Q4-1	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 isoform 1 (human)	hHCN4/iso:1		participates_in	GO:0006936	muscle contraction			PMID:10228147	IDA	NCBITaxon:9606		UniProtKB:Q9Y3Q4-1	20080601	PRO:CNA	
PR:Q9Y3Q4-1	potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 isoform 1 (human)	hHCN4/iso:1		participates_in	GO:0006812	cation transport			PMID:10228147	IDA	NCBITaxon:9606		UniProtKB:Q9Y3Q4-1	20080601	PRO:CNA