UniProtKB - Q9QWS8 (KCNH8_RAT)
Protein
Potassium voltage-gated channel subfamily H member 8
Gene
Kcnh8
Organism
Rattus norvegicus (Rat)
Status
Functioni
Pore-forming (alpha) subunit of voltage-gated potassium channel. Elicits a slowly activating, outward rectifying current. Channel properties may be modulated by cAMP and subunit assembly.
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Nucleotide bindingi | 551 – 668 | cNMPAdd BLAST | 118 |
GO - Molecular functioni
- RNA polymerase II cis-regulatory region sequence-specific DNA binding Source: RGD
- voltage-gated potassium channel activity Source: RGD
GO - Biological processi
- negative regulation of apoptotic process Source: RGD
- potassium ion transmembrane transport Source: GO_Central
- regulation of ion transmembrane transport Source: UniProtKB-KW
- regulation of membrane potential Source: GO_Central
Keywordsi
Molecular function | Ion channel, Potassium channel, Voltage-gated channel |
Biological process | Ion transport, Potassium transport, Transport |
Ligand | Potassium |
Enzyme and pathway databases
Reactomei | R-RNO-1296072, Voltage gated Potassium channels |
Names & Taxonomyi
Protein namesi | Recommended name: Potassium voltage-gated channel subfamily H member 8Alternative name(s): Ether-a-go-go-like potassium channel 3 Short name: ELK channel 3 Voltage-gated potassium channel subunit Kv12.1 |
Gene namesi | Name:Kcnh8 Synonyms:Elk1, Elk3 |
Organismi | Rattus norvegicus (Rat) |
Taxonomic identifieri | 10116 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Rattus |
Proteomesi |
|
Organism-specific databases
RGDi | 2549, Kcnh8 |
Subcellular locationi
Other locations
Plasma Membrane
- integral component of plasma membrane Source: GO_Central
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 225 | CytoplasmicSequence analysisAdd BLAST | 225 | |
Transmembranei | 226 – 246 | Helical; Name=Segment S1Sequence analysisAdd BLAST | 21 | |
Topological domaini | 247 – 255 | ExtracellularSequence analysis | 9 | |
Transmembranei | 256 – 276 | Helical; Name=Segment S2Sequence analysisAdd BLAST | 21 | |
Topological domaini | 277 – 298 | CytoplasmicSequence analysisAdd BLAST | 22 | |
Transmembranei | 299 – 319 | Helical; Name=Segment S3Sequence analysisAdd BLAST | 21 | |
Topological domaini | 320 – 327 | ExtracellularSequence analysis | 8 | |
Transmembranei | 328 – 348 | Helical; Voltage-sensor; Name=Segment S4Sequence analysisAdd BLAST | 21 | |
Topological domaini | 349 – 353 | CytoplasmicSequence analysis | 5 | |
Transmembranei | 354 – 374 | Helical; Name=Segment S5Sequence analysisAdd BLAST | 21 | |
Topological domaini | 375 – 419 | ExtracellularSequence analysisAdd BLAST | 45 | |
Intramembranei | 420 – 440 | Pore-forming; Name=Segment H5Sequence analysisAdd BLAST | 21 | |
Topological domaini | 441 – 448 | ExtracellularSequence analysis | 8 | |
Transmembranei | 449 – 469 | Helical; Name=Segment S6Sequence analysisAdd BLAST | 21 | |
Topological domaini | 470 – 1102 | CytoplasmicSequence analysisAdd BLAST | 633 |
Keywords - Cellular componenti
MembranePTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000054020 | 1 – 1102 | Potassium voltage-gated channel subfamily H member 8Add BLAST | 1102 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Glycosylationi | 320 | N-linked (GlcNAc...) asparagineSequence analysis | 1 | |
Glycosylationi | 409 | N-linked (GlcNAc...) asparagineSequence analysis | 1 |
Keywords - PTMi
GlycoproteinProteomic databases
PaxDbi | Q9QWS8 |
PRIDEi | Q9QWS8 |
PTM databases
GlyGeni | Q9QWS8, 2 sites |
Expressioni
Tissue specificityi
Detected in superior cervical, mesenteric and coeliac ganglia. Expressed in brain (piriform cortex, olfactory tubercle, cerebral cortex, hippocampus pyramidial cells and dentate gyrus and basal ganglia of caudate/putamen and accumbens nucleus). Expressed in pituitary.2 Publications
Interactioni
Subunit structurei
The potassium channel is probably composed of a homo- or heterotetrameric complex of pore-forming alpha subunits that can associate with modulating beta subunits.
Protein-protein interaction databases
STRINGi | 10116.ENSRNOP00000017246 |
Chemistry databases
BindingDBi | Q9QWS8 |
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 18 – 90 | PASAdd BLAST | 73 | |
Domaini | 93 – 145 | PACPROSITE-ProRule annotationAdd BLAST | 53 |
Motif
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Motifi | 434 – 439 | Selectivity filterBy similarity | 6 |
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 711 – 722 | Poly-GluAdd BLAST | 12 |
Domaini
The segment S4 is probably the voltage-sensor and is characterized by a series of positively charged amino acids at every third position.
Sequence similaritiesi
Belongs to the potassium channel family. H (Eag) (TC 1.A.1.20) subfamily. Kv12.1/KCNH8 sub-subfamily. [View classification]Curated
Keywords - Domaini
Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | KOG0498, Eukaryota |
InParanoidi | Q9QWS8 |
OrthoDBi | 247304at2759 |
PhylomeDBi | Q9QWS8 |
Family and domain databases
CDDi | cd00038, CAP_ED, 1 hit cd00130, PAS, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
InterProi | View protein in InterPro IPR018490, cNMP-bd-like IPR000595, cNMP-bd_dom IPR005821, Ion_trans_dom IPR003938, K_chnl_volt-dep_EAG/ELK/ERG IPR003950, K_chnl_volt-dep_ELK IPR001610, PAC IPR000014, PAS IPR000700, PAS-assoc_C IPR035965, PAS-like_dom_sf IPR014710, RmlC-like_jellyroll |
Pfami | View protein in Pfam PF00027, cNMP_binding, 1 hit PF00520, Ion_trans, 1 hit PF13426, PAS_9, 1 hit |
PRINTSi | PR01463, EAGCHANLFMLY PR01465, ELKCHANNEL |
SMARTi | View protein in SMART SM00100, cNMP, 1 hit SM00086, PAC, 1 hit |
SUPFAMi | SSF51206, SSF51206, 1 hit SSF55785, SSF55785, 1 hit |
TIGRFAMsi | TIGR00229, sensory_box, 1 hit |
PROSITEi | View protein in PROSITE PS50042, CNMP_BINDING_3, 1 hit PS50113, PAC, 1 hit |
(1+)i Sequence
Sequence statusi: Complete.
This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All
Q9QWS8-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MPVMKGLLAP QNTFLDTIAT RFDGTHSNFI LANAQVAKGF PIVYCSDGFC
60 70 80 90 100
ELAGFARTEV MQKSCSCKFL FGVETNEQLM LQIEKSLEEK VEFKGEIMFY
110 120 130 140 150
KKNGAPFWCL LDIVPIKNEK GDVVLFLASF KDITDTKVKI TSEDKKEDRA
160 170 180 190 200
KGRSRAGSHF DSARRRSRAV LYHISGHLQR REKNKLKINN NVFVDKPAFP
210 220 230 240 250
EYKVSDAKKS KFILLHFSTF KAGWDWLILL ATFYVAVTVP YNVCFIGNED
260 270 280 290 300
LSTTRSTTVS DIAVEILFII DIILNFRTTY VSKSGQVIFE ARSICIHYVT
310 320 330 340 350
TWFIIDLIAA LPFDLLYAFN VTVVSLVHLL KTVRLLRLLR LLQKLDRYSQ
360 370 380 390 400
HSTIVLTLLM SMFALLAHWM ACIWYVIGKM EREDNSLLKW EVGWLHELGK
410 420 430 440 450
RLESPYYGNN TLGGPSIRSA YIAALYFTLS SLTSVGFGNV SANTDAEKIF
460 470 480 490 500
SICTMLIGAL MHALVFGNVT AIIQRMYSRW SLYHTRTKDL KDFIRVHHLP
510 520 530 540 550
QQLKQRMLEY FQTTWSVNNG IDSNELLKDF PDELRSDITM HLNKEILQLS
560 570 580 590 600
LFECASRGCL RSLSLHIKTS FCAPGEYLLR QGDALQAIYF VCSGSMEVLK
610 620 630 640 650
DSMVLAILGK GDLIGANLSI KDQVIKTNAD VKALTYCDLQ CIILKGLFEV
660 670 680 690 700
LGLYPEYAHK FVEDIQHDLT YNLREGHESD VISRLSNKST VPQAEPKGNG
710 720 730 740 750
SIKKRLPSIV EDEEEEEVEE EETTSLSPIY TRGSSVSHSK KTGSSKSYLG
760 770 780 790 800
LSLKQLTSGT VPFHSPIRVS SANSPKTKQE ADPPNHGTRK EKNLKVQLCS
810 820 830 840 850
LGTAGTPELS PRIVDGIEDG NSSEETQTFD FGSEQIRPEP RISPSLGESE
860 870 880 890 900
IGAAFLFIKA EETKQQINKL NSEVTTLTQE VSQLGKDMRS IMQLLENILS
910 920 930 940 950
PQQPSQFCSL HPTSICPSRE SFQTRVSWSA HQPCLHLQAN GAHLYHGNVT
960 970 980 990 1000
SDIWSVDPSL VGSNPQRTEA HEQSPVDSEL HHSPNLAYSP SHCQVIQEGH
1010 1020 1030 1040 1050
LQFLRCISPH SDTTLTPLQS ISATLSSSVC SSSETSLHLV LPSRSEEGSI
1060 1070 1080 1090 1100
THGPVSSFSL ENLPGSWDRE GMMSASTEPL ENFPVEVVTS TADVKDSKAI
NV
Computationally mapped potential isoform sequencesi
There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basketA0A0G2K7A0 | A0A0G2K7A0_RAT | Potassium voltage-gated channel sub... | Kcnh8 rCG_23615 | 1,102 | Annotation score: |
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 71 | F → L in CAA07591 (PubMed:9824707).Curated | 1 | |
Sequence conflicti | 187 | K → N in CAA07591 (PubMed:9824707).Curated | 1 | |
Sequence conflicti | 296 | I → T in CAA07591 (PubMed:9824707).Curated | 1 | |
Sequence conflicti | 370 | M → I in CAA07591 (PubMed:9824707).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF061957 mRNA Translation: AAC61520.1 AJ007632 mRNA Translation: CAA07591.1 |
PIRi | T17367 |
RefSeqi | NP_659563.1, NM_145095.2 |
Genome annotation databases
GeneIDi | 246325 |
KEGGi | rno:246325 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF061957 mRNA Translation: AAC61520.1 AJ007632 mRNA Translation: CAA07591.1 |
PIRi | T17367 |
RefSeqi | NP_659563.1, NM_145095.2 |
3D structure databases
SMRi | Q9QWS8 |
ModBasei | Search... |
Protein-protein interaction databases
STRINGi | 10116.ENSRNOP00000017246 |
Chemistry databases
BindingDBi | Q9QWS8 |
PTM databases
GlyGeni | Q9QWS8, 2 sites |
Proteomic databases
PaxDbi | Q9QWS8 |
PRIDEi | Q9QWS8 |
Genome annotation databases
GeneIDi | 246325 |
KEGGi | rno:246325 |
Organism-specific databases
CTDi | 131096 |
RGDi | 2549, Kcnh8 |
Phylogenomic databases
eggNOGi | KOG0498, Eukaryota |
InParanoidi | Q9QWS8 |
OrthoDBi | 247304at2759 |
PhylomeDBi | Q9QWS8 |
Enzyme and pathway databases
Reactomei | R-RNO-1296072, Voltage gated Potassium channels |
Miscellaneous databases
PROi | PR:Q9QWS8 |
Family and domain databases
CDDi | cd00038, CAP_ED, 1 hit cd00130, PAS, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
InterProi | View protein in InterPro IPR018490, cNMP-bd-like IPR000595, cNMP-bd_dom IPR005821, Ion_trans_dom IPR003938, K_chnl_volt-dep_EAG/ELK/ERG IPR003950, K_chnl_volt-dep_ELK IPR001610, PAC IPR000014, PAS IPR000700, PAS-assoc_C IPR035965, PAS-like_dom_sf IPR014710, RmlC-like_jellyroll |
Pfami | View protein in Pfam PF00027, cNMP_binding, 1 hit PF00520, Ion_trans, 1 hit PF13426, PAS_9, 1 hit |
PRINTSi | PR01463, EAGCHANLFMLY PR01465, ELKCHANNEL |
SMARTi | View protein in SMART SM00100, cNMP, 1 hit SM00086, PAC, 1 hit |
SUPFAMi | SSF51206, SSF51206, 1 hit SSF55785, SSF55785, 1 hit |
TIGRFAMsi | TIGR00229, sensory_box, 1 hit |
PROSITEi | View protein in PROSITE PS50042, CNMP_BINDING_3, 1 hit PS50113, PAC, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | KCNH8_RAT | |
Accessioni | Q9QWS8Primary (citable) accession number: Q9QWS8 Secondary accession number(s): O88877 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 28, 2002 |
Last sequence update: | November 28, 2002 | |
Last modified: | December 2, 2020 | |
This is version 144 of the entry and version 2 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families