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Entry version 142 (16 Oct 2019)
Sequence version 1 (01 Jun 1998)
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Protein

Potassium channel subfamily K member 3

Gene

Kcnk3

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at transcript leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

pH-dependent, voltage-insensitive, background potassium channel protein. Rectification direction results from potassium ion concentration on either side of the membrane. Acts as an outward rectifier when external potassium concentration is low. When external potassium concentration is high, current is inward.By similarity

Miscellaneous

Inhibited by extracellular acidification, zinc, bupivacaine and phenytoin. Activated by protein kinase A.

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionIon channel, Potassium channel
Biological processIon transport, Potassium transport, Transport
LigandPotassium

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-RNO-1299316 TWIK-releated acid-sensitive K+ channel (TASK)
R-RNO-5576886 Phase 4 - resting membrane potential

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Potassium channel subfamily K member 3
Alternative name(s):
Acid-sensitive potassium channel protein TASK-1
TWIK-related acid-sensitive K(+) channel 1
Two pore potassium channel KT3.1
Short name:
Two pore K(+) channel KT3.1
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Kcnk3
Synonyms:Task, Task1
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiRattus norvegicus (Rat)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10116 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002494 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 6

Organism-specific databases

Rat genome database

More...
RGDi
61997 Kcnk3

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>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 & Seán O’Donoghue; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 8CytoplasmicSequence analysis8
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei9 – 29HelicalSequence analysisAdd BLAST21
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a region that is buried within a membrane, but does not cross it.<p><a href='/help/intramem' target='_top'>More...</a></p>Intramembranei78 – 101Pore-forming; Name=Pore-forming 1Sequence analysisAdd BLAST24
Transmembranei108 – 128HelicalSequence analysisAdd BLAST21
Topological domaini129 – 158CytoplasmicSequence analysisAdd BLAST30
Transmembranei159 – 179HelicalSequence analysisAdd BLAST21
Intramembranei184 – 207Pore-forming; Name=Pore-forming 2Sequence analysisAdd BLAST24
Transmembranei223 – 243HelicalSequence analysisAdd BLAST21
Topological domaini244 – 411CytoplasmicSequence analysisAdd BLAST168

Keywords - Cellular componenti

Cell membrane, Membrane

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL4294

IUPHAR/BPS Guide to PHARMACOLOGY

More...
GuidetoPHARMACOLOGYi
515

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001017461 – 411Potassium channel subfamily K member 3Add BLAST411

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi53N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Glycoprotein

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
O54912

PRoteomics IDEntifications database

More...
PRIDEi
O54912

PTM databases

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
O54912

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Strongest expression in heart. Moderate expression in lung and brain. Low levels in liver, kidney and skeletal muscle.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSRNOG00000009790 Expressed in 9 organ(s), highest expression level in heart

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
O54912 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
O54912 RN

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer. Heterodimer with KCNK1.

By similarity

GO - Molecular functioni

Protein-protein interaction databases

Database of interacting proteins

More...
DIPi
DIP-61121N

Protein interaction database and analysis system

More...
IntActi
O54912, 2 interactors

STRING: functional protein association networks

More...
STRINGi
10116.ENSRNOP00000013107

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG4404 Eukaryota
ENOG410XRZJ LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000158248

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000231463

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O54912

KEGG Orthology (KO)

More...
KOi
K04914

Identification of Orthologs from Complete Genome Data

More...
OMAi
IGFISCM

Database of Orthologous Groups

More...
OrthoDBi
1109218at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
O54912

TreeFam database of animal gene trees

More...
TreeFami
TF313947

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003280 2pore_dom_K_chnl
IPR003092 2pore_dom_K_chnl_TASK
IPR013099 K_chnl_dom
IPR005406 KCNK3

The PANTHER Classification System

More...
PANTHERi
PTHR11003:SF138 PTHR11003:SF138, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07885 Ion_trans_2, 2 hits

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF038061 K_channel_subfamily_K_type, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01333 2POREKCHANEL
PR01584 TASK1CHANNEL
PR01095 TASKCHANNEL

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

O54912-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKRQNVRTLA LIVCTFTYLL VGAAVFDALE SEPEMIERQR LELRQLELRA
60 70 80 90 100
RYNLSEGGYE ELERVVLRLK PHKAGVQWRF AGSFYFAITV ITTIGYGHAA
110 120 130 140 150
PSTDGGKVFC MFYALLGIPL TLVMFQSLGE RINTFVRYLL HRAKRGLGMR
160 170 180 190 200
HAEVSMANMV LIGFVSCIST LCIGAAAFSY YERWTFFQAY YYCFITLTTI
210 220 230 240 250
GFGDYVALQK DQALQTQPQY VAFSFVYILT GLTVIGAFLN LVVLRFMTMN
260 270 280 290 300
AEDEKRDAEH RALLTHNGQA GGLGGLSCLS GSLGDGVRPR DPVTCAAAAG
310 320 330 340 350
GMGVGVGVGG SGFRNVYAEM LHFQSMCSCL WYKSREKLQY SIPMIIPRDL
360 370 380 390 400
STSDTCVEHS HSSPGGGGRY SDTPSHPCLC SGTQRSAISS VSTGLHSLAT
410
FRGLMKRRSS V
Length:411
Mass (Da):45,276
Last modified:June 1, 1998 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iD2778016E09E2BF5
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
G3V9Y8G3V9Y8_RAT
Potassium channel subfamily K membe...
Kcnk3 rCG_61999
392Annotation score:

Annotation score:2 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AF031384 mRNA Translation: AAC39952.1

NCBI Reference Sequences

More...
RefSeqi
NP_203694.1, NM_033376.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSRNOT00000013107; ENSRNOP00000013107; ENSRNOG00000009790

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
29553

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
rno:29553

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF031384 mRNA Translation: AAC39952.1
RefSeqiNP_203694.1, NM_033376.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

DIPiDIP-61121N
IntActiO54912, 2 interactors
STRINGi10116.ENSRNOP00000013107

Chemistry databases

ChEMBLiCHEMBL4294
GuidetoPHARMACOLOGYi515

PTM databases

PhosphoSitePlusiO54912

Proteomic databases

PaxDbiO54912
PRIDEiO54912

Genome annotation databases

EnsembliENSRNOT00000013107; ENSRNOP00000013107; ENSRNOG00000009790
GeneIDi29553
KEGGirno:29553

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3777
RGDi61997 Kcnk3

Phylogenomic databases

eggNOGiKOG4404 Eukaryota
ENOG410XRZJ LUCA
GeneTreeiENSGT00940000158248
HOGENOMiHOG000231463
InParanoidiO54912
KOiK04914
OMAiIGFISCM
OrthoDBi1109218at2759
PhylomeDBiO54912
TreeFamiTF313947

Enzyme and pathway databases

ReactomeiR-RNO-1299316 TWIK-releated acid-sensitive K+ channel (TASK)
R-RNO-5576886 Phase 4 - resting membrane potential

Miscellaneous databases

Protein Ontology

More...
PROi
PR:O54912

Gene expression databases

BgeeiENSRNOG00000009790 Expressed in 9 organ(s), highest expression level in heart
ExpressionAtlasiO54912 baseline and differential
GenevisibleiO54912 RN

Family and domain databases

InterProiView protein in InterPro
IPR003280 2pore_dom_K_chnl
IPR003092 2pore_dom_K_chnl_TASK
IPR013099 K_chnl_dom
IPR005406 KCNK3
PANTHERiPTHR11003:SF138 PTHR11003:SF138, 1 hit
PfamiView protein in Pfam
PF07885 Ion_trans_2, 2 hits
PIRSFiPIRSF038061 K_channel_subfamily_K_type, 1 hit
PRINTSiPR01333 2POREKCHANEL
PR01584 TASK1CHANNEL
PR01095 TASKCHANNEL

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiKCNK3_RAT
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: O54912
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 21, 2001
Last sequence update: June 1, 1998
Last modified: October 16, 2019
This is version 142 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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