O60741 (HCN1_HUMAN) Homo sapiens (Human)

Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1 UniProtKBInterProSTRINGInteractive Modelling

890 aa; Sequence (Fasta)

Sequence Features

 42P -> S (in dbSNP:rs56164833) VAR_061105 dbSNP
 47G -> V (in EIEE24; unknown pathological significance; dbSNP:rs544994462) VAR_071825 dbSNP
 85E -> A (in GEFSP10; unknown pathological significance) VAR_082653
 100S -> F (in EIEE24; dominant-negative mutation resulting in gain of channel function; dbSNP:rs587777492) VAR_071826 dbSNP
 143F -> Y (in EIEE24; unknown pathological significance) VAR_082654
 153M -> I (in EIEE24; affects channel gating properties; the half-activation voltage is shifted to the depolarizing direction; significantly faster activation and slower deactivation kinetics than wild-type channel; dbSNP:rs1057519548) VAR_078216 dbSNP
 157L -> V (in GEFSP10; unknown pathological significance; reduced current density; affects channel gating properties as the half-activation voltage is shifted to the depolarizing direction; neurons expressing mutant channels show increased excitability) VAR_082655
 171T -> R (in GEFSP10; unknown pathological significance) VAR_082656
 172T -> P (in GEFSP10; unknown pathological significance) VAR_082657
 243M -> R (in GEFSP10; significantly decreased current densities) VAR_082658
 260T -> I (in GEFSP10; unknown pathological significance) VAR_082659
 261K -> E (in EIEE24; unknown pathological significance) VAR_082660
 264S -> C (found in a patient with infantile-onset epilepsy; unknown pathological significance) VAR_082661
 272S -> P (in EIEE24; dominant-negative mutation resulting in loss of channel currents; dbSNP:rs587777493) VAR_071827 dbSNP
 275I -> T (found in a patient with childhood focal epilepsy; unknown pathological significance) VAR_082662
 279H -> Y (in EIEE24; results in a gain of channel function; dbSNP:rs587777495) VAR_071828 dbSNP
 297R -> T (in EIEE24; dominant-negative mutation resulting in loss of channel currents; dbSNP:rs587777494) VAR_071829 dbSNP
 305M -> L (in EIEE24; absence of hyperpolarization- activated currents; highly reduced amount of protein at the cell membrane) VAR_082663
 329C -> S (in GEFSP10; decreased current density; voltage-dependence of activation as well as the activation and deactivation kinetics are not altered) VAR_082664
 379M -> R (found in a patient with intellectual disability and language delay; unknown pathological significance) VAR_082665
 391G -> C (in GEFSP10; affects channel gating properties as the half-activation voltage is shifted to the hyperpolarizing direction) VAR_082666
 391G -> D (in EIEE24; results in absence of hyperpolarization-activated currents; reduced amount of protein at the cell membrane; dbSNP:rs1057519547) VAR_078217 dbSNP
 391G -> S (in GEFSP10; affects channel gating properties as the half-activation voltage is shifted to the depolarizing direction; reduced amount of protein at the cell membrane) VAR_082667
 397I -> L (in EIEE24; the half-activation voltage is shifted to the depolarizing direction; reduced amount of protein at the cell membrane) VAR_082668
 399S -> P (in EIEE24; results in absence of hyperpolarization-activated currents; reduced amount of protein at the cell membrane) VAR_082669
 401D -> H (in EIEE24; results in a gain of channel function; dbSNP:rs587777491) VAR_071830 dbSNP
 414V -> M (in GEFSP10; results in a depolarizing shift of the half-activation voltage and faster activation kinetics) VAR_082670
 590R -> Q (in GEFSP10; decreased current densities; half-activation voltage is slightly shifted to the hyperpolarizing direction) VAR_082671
 680S -> Y (in GEFSP10; unknown pathological significance) VAR_082672
 715R -> G (in GEFSP10; unknown pathological significance) VAR_082673
 143-164Helical; Name=Segment S1
 174-194Helical; Name=Segment S2
 216-236Helical; Name=Segment S3
 261-281Helical; Voltage-sensor; Name=Segment S4
 296-318Helical; Name=Segment S5
 345-366Pore-forming; Name=Segment H5
 372-392Helical; Name=Segment S6
 539-542cAMP
 549-550cAMP
 590-593cAMP
 98-141Ion transport N-terminal
IPR013621PF08412
 143-402Ion transport domain
IPR005821PF00520
 494-576Cyclic nucleotide-binding domain
IPR000595PF00027

Sequence Alignments

Experimental structures

DescriptionOligo-stateLigandsStructureRangeDownloadAssess
Structure of the human HCN1 hyperpolarization-activated cyclic nucleotide-gated ion channel in comp… Heteromer
CMP;5u6p94-608
Human HCN1 channel in a hyperpolarized conformationhomo-4-mer CMP;HG;6uqf94-635
Human HCN1 channel Y289D mutanthomo-4-mer CMP;6uqg94-635
Structure of the human HCN1 hyperpolarization-activated cyclic nucleotide-gated ion channelhomo-4-mer 5u6o94-586