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Protein

Potassium voltage-gated channel subfamily E member 1

Gene

KCNE1

Organism
Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

Ancillary protein that assembles as a beta subunit with a voltage-gated potassium channel complex of pore-forming alpha subunits. Modulates the gating kinetics and enhances stability of the channel complex. Assembled with KCNB1 modulates the gating characteristics of the delayed rectifier voltage-dependent potassium channel KCNB1. Assembled with KCNQ1/KVLQT1 is proposed to form the slowly activating delayed rectifier cardiac potassium (IKs) channel. The outward current reaches its steady state only after 50 seconds. Assembled with KCNH2/HERG may modulate the rapidly activating component of the delayed rectifying potassium current in heart (IKr).By similarity

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionIon channel, Potassium channel, Voltage-gated channel
Biological processIon transport, Potassium transport, Transport
LigandPotassium

Names & Taxonomyi

Protein namesi
Recommended name:
Potassium voltage-gated channel subfamily E member 1
Gene namesi
Name:KCNE1
OrganismiPongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
Taxonomic identifieri9601 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaePongo
Proteomesi
  • UP000001595 Componenti: Unplaced

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei44 – 66HelicalSequence analysisAdd BLAST23
Topological domaini67 – 129CytoplasmicSequence analysisAdd BLAST63

Keywords - Cellular componenti

Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001442811 – 129Potassium voltage-gated channel subfamily E member 1Add BLAST129

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Glycosylationi5N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi26N-linked (GlcNAc...) asparagineSequence analysis1
Modified residuei102Phosphoserine; by PKCBy similarity1

Post-translational modificationi

Phosphorylation inhibits the potassium current.By similarity
N-glycosylation at Asn-26 occurs post-translationally, and requires prior cotranslational glycosylation at Asn-5.By similarity

Keywords - PTMi

Glycoprotein, Phosphoprotein

Interactioni

Subunit structurei

Interacts with KCNB1. Interacts with KCNC2 (By similarity). Associates with KCNH2/HERG. Interacts with KCNQ1; targets the complex KCNQ1-KCNE1 to the membrane raft (By similarity).By similarity

Protein-protein interaction databases

STRINGi9601.ENSPPYP00000012714

Structurei

3D structure databases

SMRiQ5R8Q2
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the potassium channel KCNE family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG410IY71 Eukaryota
ENOG410Y1SF LUCA
HOVERGENiHBG052226
InParanoidiQ5R8Q2

Family and domain databases

InterProiView protein in InterPro
IPR000369 K_chnl_KCNE
IPR005424 K_chnl_volt-dep_bsu_KCNE1
PANTHERiPTHR15282 PTHR15282, 1 hit
PfamiView protein in Pfam
PF02060 ISK_Channel, 1 hit
PRINTSiPR01604 KCNE1CHANNEL
PR00168 KCNECHANNEL

Sequencei

Sequence statusi: Complete.

Q5R8Q2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MILSNTTAVT PFLTKLWQET VQQGGNVSGL ARRSPRSDDG KLEALYVLMV
60 70 80 90 100
LGFFGFFTLG IMLSYIRSKK LEHSNDPFNV YIESDAWQEK DKAYVQARVL
110 120
KSYRACYVVE NHLAVEQPNT HLPGTKPSP
Length:129
Mass (Da):14,568
Last modified:December 21, 2004 - v1
Checksum:i32F043C431E61ABB
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR859699 mRNA Translation: CAH91858.1
RefSeqiNP_001126076.1, NM_001132604.1
UniGeneiPab.17497

Genome annotation databases

GeneIDi100173028
KEGGipon:100173028

Similar proteinsi

Entry informationi

Entry nameiKCNE1_PONAB
AccessioniPrimary (citable) accession number: Q5R8Q2
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 24, 2006
Last sequence update: December 21, 2004
Last modified: June 20, 2018
This is version 57 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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