Kcne2 potassium voltage-gated channel subfamily E regulatory subunit 2 [Rattus norvegicus (Norway rat)] - Gene

Summary

Official Symbol: Kcne2provided by RGD
Official Full Name: potassium voltage-gated channel subfamily E regulatory subunit 2provided by RGD
Primary source: RGD:621383
See related: EnsemblRapid:ENSRNOG00000029811 AllianceGenome:RGD:621383
Gene type: protein coding
RefSeq status: PROVISIONAL
Organism: Rattus norvegicus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Rattus
Also known as: Mirp1
Summary: Enables several functions, including identical protein binding activity; transmembrane transporter binding activity; and voltage-gated potassium channel activity. Contributes to delayed rectifier potassium channel activity and inward rectifier potassium channel activity. Involved in several processes, including potassium ion transmembrane transport; regulation of monoatomic ion transmembrane transporter activity; and tongue development. Located in cell surface and plasma membrane. Part of voltage-gated potassium channel complex. Human ortholog(s) of this gene implicated in atrial fibrillation; familial atrial fibrillation; long QT syndrome; and long QT syndrome 6. Orthologous to human KCNE2 (potassium voltage-gated channel subfamily E regulatory subunit 2). [provided by Alliance of Genome Resources, Nov 2024]
Expression: Biased expression in Lung (RPKM 96.3), Uterus (RPKM 33.0) and 8 other tissues See more
Orthologs: human mouse all
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Genomic context

Location:: 11q11

Exon count:: 3

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCr8 (GCF_036323735.1)	11	NC_086029.1 (45003468..45015942)
RS_2023_06	previous assembly	mRatBN7.2 (GCF_015227675.2)	11	NC_051346.1 (31517176..31530026)
106	previous assembly	Rnor_6.0 (GCF_000001895.5)	11	NC_005110.4 (32434786..32447264)

Chromosome 11 - NC_086029.1 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: A rat RNA-Seq transcriptomic BodyMap across 11 organs and 4 developmental stages
Description: 320 RNA samples isolated from 11 organs (adrenal gland, brain, heart, kidney, liver, lung, muscle, spleen, thymus, and testes or uterus) from both sexes of Fischer 344 rats across four developmental stages (2-, 6-, 21-, and 104-weeks-old)
BioProject: PRJNA238328
Publication: PMID 24510058
Analysis date: Mon Jun 6 17:44:12 2016

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Endogenous KCNE2 in cardiomyocytes is important in maintaining cardiac electrical stability mainly by regulating Ito and action potential duration.
Title: Manipulation of KCNE2 expression modulates action potential duration and Ito and IK in rat and mouse ventricular myocytes.
The KCNE2 mutation R27C may induce familial atrial fibrillation partially through enhancing the suppression of Cav1.2 calcium channel.
Title: KCNE2 modulates cardiac L-type Ca(2+) channel.
KCNE1 and KCNE2, auxiliary subunits of voltage-gated potassium channels, undergo sequential cleavage mediated by either alpha-secretase and presenilin(PS)/gamma-secretase or BACE1 and PS/gamma-secretase in cells.
Title: BACE1 and presenilin/γ-secretase regulate proteolytic processing of KCNE1 and 2, auxiliary subunits of voltage-gated potassium channels.
KCNE1 and KCNE2 suppress currents generated by homomeric Kv1.4, Kv3.3, and Kv3.4 channels
Title: KCNE1 and KCNE2 provide a checkpoint governing voltage-gated potassium channel α-subunit composition.
currents generated by homomeric Kv1.4, Kv3.3, and Kv3.4 channels are all strongly suppressed by the single transmembrane domain ancillary (beta) subunits KCNE1 and KCNE2
Title: KCNE1 and KCNE2 inhibit forward trafficking of homomeric N-type voltage-gated potassium channels.
KCNE2 can modulate its partner channel function not only by altering channel conductance and/or gating kinetics, but also by affecting protein stability.
Title: KCNE2 protein is more abundant in ventricles than in atria and can accelerate hERG protein degradation in a phosphorylation-dependent manner.
KCNE-2 potassium channel and KCNH-2 are molecular subunits of an inwardly rectifying potassium channel complex.
Title: The stoichiometric relationship between KCNH-2 and KCNE-2 in I(Kr) channel formation.
mRNA expression for Kcnd2 and Kcne2 was significantly reduced in diabetic rats which may underlie delayed propagation of electrical activity in the ventricular myocardium
Title: Altered gene expression may underlie prolonged duration of the QT interval and ventricular action potential in streptozotocin-induced diabetic rat heart.
Rat MinK and MiRP1 reduced Kv2.1 current density three- and twofold, respectively; slowed Kv2.1 activation (at +60 mV) two- and threefold, respectively; and slowed Kv2.1 deactivation less than twofold.
Title: Regulation of the Kv2.1 potassium channel by MinK and MiRP1.
In aging rat ventricle, KCNE2 may associate with HCN2 and enhance its current amplitude. KCNE2 protein is expressed in ventricles, and it can play diverse roles in ventricular electrical activity under (patho)physiological conditions.
Title: KCNE2 protein is expressed in ventricles of different species, and changes in its expression contribute to electrical remodeling in diseased hearts.

Submit: New GeneRIF Correction See all GeneRIFs (11)

General gene information

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Markers

Kcne2 (e-PCR), detects polymorphism
- UniSTS:259099

RH139863 (e-PCR)
- UniSTS:221947

Gene Ontology Provided by RGD

Function	Evidence Code	Pubs
contributes_to delayed rectifier potassium channel activity	IBA Inferred from Biological aspect of Ancestor more info
contributes_to delayed rectifier potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
contributes_to delayed rectifier potassium channel activity	ISO Inferred from Sequence Orthology more info
enables identical protein binding	IPI Inferred from Physical Interaction more info	PubMed
contributes_to inward rectifier potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
contributes_to inward rectifier potassium channel activity	ISO Inferred from Sequence Orthology more info
enables monoatomic cation channel activity	TAS Traceable Author Statement more info	PubMed
enables potassium channel regulator activity	IBA Inferred from Biological aspect of Ancestor more info
enables potassium channel regulator activity	IDA Inferred from Direct Assay more info	PubMed
enables potassium channel regulator activity	ISO Inferred from Sequence Orthology more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables transmembrane transporter binding	IBA Inferred from Biological aspect of Ancestor more info
enables transmembrane transporter binding	IDA Inferred from Direct Assay more info	PubMed
enables transmembrane transporter binding	IPI Inferred from Physical Interaction more info	PubMed
enables transmembrane transporter binding	ISO Inferred from Sequence Orthology more info
enables voltage-gated potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
contributes_to voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization	IBA Inferred from Biological aspect of Ancestor more info
enables voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization	ISO Inferred from Sequence Orthology more info

Process	Evidence Code	Pubs
involved_in cardiac muscle cell action potential involved in contraction	ISO Inferred from Sequence Orthology more info
involved_in cellular response to xenobiotic stimulus	IDA Inferred from Direct Assay more info	PubMed
involved_in cellular response to xenobiotic stimulus	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within establishment of localization in cell	ISO Inferred from Sequence Orthology more info
involved_in iodide transport	ISO Inferred from Sequence Orthology more info
involved_in membrane repolarization	IDA Inferred from Direct Assay more info	PubMed
involved_in membrane repolarization	ISO Inferred from Sequence Orthology more info
involved_in membrane repolarization during action potential	IBA Inferred from Biological aspect of Ancestor more info
involved_in membrane repolarization during action potential	IDA Inferred from Direct Assay more info	PubMed
involved_in membrane repolarization during action potential	ISO Inferred from Sequence Orthology more info
involved_in membrane repolarization during ventricular cardiac muscle cell action potential	ISO Inferred from Sequence Orthology more info
involved_in multicellular organismal response to stress	ISO Inferred from Sequence Orthology more info
involved_in myo-inositol transport	ISO Inferred from Sequence Orthology more info
involved_in negative regulation of delayed rectifier potassium channel activity	IBA Inferred from Biological aspect of Ancestor more info
involved_in negative regulation of delayed rectifier potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of delayed rectifier potassium channel activity	ISO Inferred from Sequence Orthology more info
involved_in negative regulation of voltage-gated potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of proteasomal protein catabolic process	ISO Inferred from Sequence Orthology more info
involved_in positive regulation of voltage-gated calcium channel activity	IDA Inferred from Direct Assay more info	PubMed
involved_in potassium ion export across plasma membrane	IBA Inferred from Biological aspect of Ancestor more info
involved_in potassium ion export across plasma membrane	IDA Inferred from Direct Assay more info	PubMed
involved_in potassium ion export across plasma membrane	ISO Inferred from Sequence Orthology more info
involved_in potassium ion import across plasma membrane	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in potassium ion import across plasma membrane	ISO Inferred from Sequence Orthology more info
involved_in potassium ion transmembrane transport	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of_or_within potassium ion transmembrane transport	ISO Inferred from Sequence Orthology more info
involved_in potassium ion transmembrane transport	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within protein localization	ISO Inferred from Sequence Orthology more info
involved_in regulation of cyclic nucleotide-gated ion channel activity	IDA Inferred from Direct Assay more info	PubMed
involved_in regulation of delayed rectifier potassium channel activity	IDA Inferred from Direct Assay more info	PubMed
involved_in regulation of heart rate by cardiac conduction	IBA Inferred from Biological aspect of Ancestor more info
involved_in regulation of heart rate by cardiac conduction	ISO Inferred from Sequence Orthology more info
involved_in regulation of membrane repolarization	IDA Inferred from Direct Assay more info	PubMed
involved_in regulation of membrane repolarization	ISO Inferred from Sequence Orthology more info
involved_in regulation of potassium ion transmembrane transport	IDA Inferred from Direct Assay more info	PubMed
involved_in regulation of potassium ion transmembrane transport	ISO Inferred from Sequence Orthology more info
involved_in regulation of ventricular cardiac muscle cell membrane repolarization	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within regulation of ventricular cardiac muscle cell membrane repolarization	ISO Inferred from Sequence Orthology more info
involved_in regulation of ventricular cardiac muscle cell membrane repolarization	ISO Inferred from Sequence Orthology more info
involved_in tongue development	IEP Inferred from Expression Pattern more info	PubMed
involved_in ventricular cardiac muscle cell action potential	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within ventricular cardiac muscle cell action potential	ISO Inferred from Sequence Orthology more info
involved_in ventricular cardiac muscle cell action potential	ISO Inferred from Sequence Orthology more info

Component	Evidence Code	Pubs
located_in apical plasma membrane	ISO Inferred from Sequence Orthology more info
located_in cell surface	IDA Inferred from Direct Assay more info	PubMed
located_in cell surface	ISO Inferred from Sequence Orthology more info
located_in membrane	ISO Inferred from Sequence Orthology more info
located_in plasma membrane	IDA Inferred from Direct Assay more info	PubMed
located_in plasma membrane	ISO Inferred from Sequence Orthology more info
part_of voltage-gated potassium channel complex	IBA Inferred from Biological aspect of Ancestor more info
part_of voltage-gated potassium channel complex	IDA Inferred from Direct Assay more info	PubMed
part_of voltage-gated potassium channel complex	ISO Inferred from Sequence Orthology more info

General protein information

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Preferred Names: potassium voltage-gated channel subfamily E member 2

Names: minK-related peptide 1; minimum potassium ion channel-related peptide 1; potassium channel subunit beta MiRP1; potassium channel, voltage gated subfamily E regulatory beta subunit 2; potassium channel, voltage-gated Isk-related subfamily E regulatory beta subunit 2; potassium voltage-gated channel, Isk-related family, member 2; potassium voltage-gated channel, Isk-related subfamily, gene 2

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_133603.2 → NP_598287.1 potassium voltage-gated channel subfamily E member 2

See identical proteins and their annotated locations for NP_598287.1

Status: PROVISIONAL

Source sequence(s)

BC089778

UniProtKB/Swiss-Prot

P63161, Q5FVT9

UniProtKB/TrEMBL

A6JLI9

Related

ENSRNOP00000081079.1, ENSRNOT00000093948.2

Conserved Domains (1) summary

pfam02060
Location:50 → 108

ISK_Channel; Slow voltage-gated potassium channel