Q9Y3Q4 (HCN4_HUMAN) Homo sapiens (Human)
Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 UniProtKBInterProSTRINGInteractive Modelling
1203 aa; Sequence (Fasta)
It is possible new templates exist for this target since these models were created.
Sequence Features
| 485 | A -> V (in SSS2; results in a significant reduction of current density compared to wild-type; dbSNP:rs1454748709) VAR_066614 dbSNP | ||
| 553 | D -> N (in SSS2; dbSNP:rs104894485) VAR_026534 dbSNP | ||
| 672 | S -> R (in SSS2; results in decreased affinity for cAMP but does not abolish channel activation; shifts the current activation range to hyperpolarized voltages; slows channel opening and speeds up channel closure; dbSNP:rs104894488) VAR_026535 dbSNP | ||
| 267-287 | Helical; Name=Segment S1 | ||
| 294-314 | Helical; Name=Segment S2 | ||
| 341-361 | Helical; Name=Segment S3 | ||
| 369-389 | Helical; Voltage-sensor; Name=Segment S4 | ||
| 421-441 | Helical; Name=Segment S5 | ||
| 465-486 | Pore-forming; Name=Segment H5 | ||
| 497-517 | Helical; Name=Segment S6 | ||
| 659-662 | cAMP | ||
| 669-670 | cAMP | ||
| 710-713 | cAMP | ||
| 219-261 | Ion transport N-terminal IPR013621PF08412 | ||
| 263-522 | Ion transport domain IPR005821PF00520 | ||
| 614-696 | Cyclic nucleotide-binding domain IPR000595PF00027 |
Sequence Alignments
Experimental structures
| Description | Oligo-state | Ligands | Structure | Range |
|---|---|---|---|---|
| Structure of human HCN4 hyperpolarization-activated cyclic nucleotide-gated ion channel in complex … | homo-4-mer | 4×CMP; 28×PC1; 4×PIE; 8×3PE; 4×UNX; | 6gyo | |
| Assess | ||||
| Structure of human HCN4 hyperpolarization-activated cyclic nucleotide-gated ion channel | homo-4-mer | 28×PC1; 8×3PE; | 6gyn | |
| Assess | ||||
| Crystal structure of the human HCN4 channel C-terminus carrying the S672R mutation | homo-4-mer | 4×CMP; 4×PO4; | 4hbn | |
| Assess | ||||
| Tetramerization dynamics of the C-terminus underlies isoform-specific cAMP-gating in HCN channels | homo-4-mer | 4×CMP; 20×GOL; | 3u11 | |
| Assess | ||||
| Structure of the cyclic nucleotide-binding domain of HCN4 channel complexed with 7-CH-cAMP | homo-4-mer | 4×7CH; | 4nvp | |
| Assess | ||||
| Structural basis for the cAMP-dependent gating in human HCN4 channel | homo-4-mer | 4×CMP; | 3otf | |
| Assess | ||||
| HCN4 CNBD in complex with cGMP | homo-4-mer | 8×PCG; 4×ACT; 2×GOL; | 4kl1 | |
| Assess | ||||
| Apo Structure of human HCN4 CNBD solved by NMR | monomer | 2mng | ||
| Assess | ||||
Homology models
| Oligo-state | QMEAN | Template | Range | Seq id (%) | Ligands |
|---|---|---|---|---|---|
| homo-4-mer | -1.25 | 6uqf.1.A | 85.92 | ||
| Assess | |||||