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Entry version 140 (29 Sep 2021)
Sequence version 1 (01 Jun 2002)
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Protein
Submitted name:

Inward rectifier potassium channel 4

Gene

Kcnj4

Organism
Mus musculus (Mouse)
Status
Unreviewed-Annotation 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>
-Experimental evidence at protein 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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei163Role in the control of polyamine-mediated channel gating and in the blocking by intracellular magnesiumUniRule annotation1

<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, Voltage-gated channelUniRule annotationARBA annotation
Biological processIon transport, Potassium transportUniRule annotationARBA annotation, Transport
LigandPotassium

<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
Submitted name:
Inward rectifier potassium channel 4Imported
Submitted name:
Inwardly-rectifying K+ channel proteinImported
Submitted name:
Potassium inwardly-rectifying channel, subfamily J, member 4Imported
<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:Kcnj4Imported
<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>OrganismiMus musculus (Mouse)Imported
<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 identifieri10090 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<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
  • UP000000589 <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 15

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...
MGIi
MGI:104743, Kcnj4

Eukaryotic Pathogen, Vector and Host Database Resources

More...
VEuPathDBi
HostDB:ENSMUSG00000044216

<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

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 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>Transmembranei57 – 83HelicalSequence analysisAdd BLAST27
Transmembranei147 – 172HelicalSequence analysisAdd BLAST26

Keywords - Cellular componenti

Membrane

<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

Proteomic databases

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
340823

PTM databases

SwissPalm database of S-palmitoylation events

More...
SwissPalmi
Q8R435

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSMUSG00000044216, Expressed in striatum and 91 other tissues

<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

GO - Molecular functioni

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
Q8R435

Database of comparative protein structure models

More...
ModBasei
Search...

<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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini22 – 177IRKInterPro annotationAdd BLAST156
Domaini184 – 356IRK_CInterPro annotationAdd BLAST173

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and domains' section denotes the positions of regions of coiled coil within the protein.<p><a href='/help/coiled' target='_top'>More...</a></p>Coiled coili369 – 392Sequence analysisAdd BLAST24

<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

Belongs to the inward rectifier-type potassium channel (TC 1.A.2.1) family. [View classification]UniRule annotation

Keywords - Domaini

Coiled coilSequence analysis, Transmembrane, Transmembrane helixSequence analysisARBA annotation

Phylogenomic databases

Ensembl GeneTree

More...
GeneTreei
ENSGT01030000234586

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_022738_11_1_1

Identification of Orthologs from Complete Genome Data

More...
OMAi
CHVGLSS

Database of Orthologous Groups

More...
OrthoDBi
956263at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q8R435

TreeFam database of animal gene trees

More...
TreeFami
TF313676

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.40.1400, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR014756, Ig_E-set
IPR041647, IRK_C
IPR016449, K_chnl_inward-rec_Kir
IPR003273, K_chnl_inward-rec_Kir2.3
IPR013518, K_chnl_inward-rec_Kir_cyto
IPR040445, Kir_TM

The PANTHER Classification System

More...
PANTHERi
PTHR11767, PTHR11767, 1 hit
PTHR11767:SF53, PTHR11767:SF53, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01007, IRK, 1 hit
PF17655, IRK_C, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF005465, GIRK_kir, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01326, KIR23CHANNEL
PR01320, KIRCHANNEL

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF81296, SSF81296, 1 hit

<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: Fragment.

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

Q8R435-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MHGHNRNGQA HVPRRKRRNR FVKKNGQCNV YFANLSNKSQ RYMADIFTTC
60 70 80 90 100
VDTRWRYMLM IFSAAFLVSW LFFGLLFWCI AFFHGDLEAS PSVPAAGGPG
110 120 130 140 150
GNGGASPNAP KPCIMHVNGF LGAFLFSVET QTTIGYGFRC VTEECPLAVI
160 170 180 190 200
AVVVQSIVGC VIDSFMIGTI MAKMARPKKR AQTLLFSHHA VISVRDGKLC
210 220 230 240 250
LMWRVGNLRK SHIVEAHVRA QLIKPYMTQE GEYLPLDQRD LNVGYDIGLD
260 270 280 290 300
RIFLVSPIII VHEIDEDSPL YGMGKEELES EDFEIVVILE GMVEATAMTT
310 320 330 340 350
QARSSYLASE ILWGHRFEPV VFEEKSHYKV DYSRFHKTYE VAGTPCCSAR
360 370 380 390 400
ELQESKITVL PAPPPPPSAF CYENELALMS QEEEEMEEEA AAAAAVAAGL
410 420 430 440
GLEAGSKEEA GIIRMLEFGS HLDLERMQAA TLPLDNISYR RESAI
Length:445
Mass (Da):49,645
Last modified:June 1, 2002 - 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:i66D8B95D2A7D7AC5
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
P52189KCNJ4_MOUSE
Inward rectifier potassium channel ...
Kcnj4 Irk3
445Annotation 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 Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section is used for sequence fragments to indicate that the residue at the extremity of the sequence is not the actual terminal residue in the complete protein sequence.<p><a href='/help/non_ter' target='_top'>More...</a></p>Non-terminal residuei1Imported1

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
BC120593 mRNA Translation: AAI20594.1
BC137594 mRNA Translation: AAI37595.1
AY079447 Genomic DNA Translation: AAL87535.1

NCBI Reference Sequences

More...
RefSeqi
NP_032453.3, NM_008427.4
XP_006520549.1, XM_006520486.3
XP_006520550.1, XM_006520487.3
XP_006520551.1, XM_006520488.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000057801; ENSMUSP00000094075; ENSMUSG00000044216

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
16520

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mmu:16520

UCSC genome browser

More...
UCSCi
uc007wtn.2, mouse

<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
BC120593 mRNA Translation: AAI20594.1
BC137594 mRNA Translation: AAI37595.1
AY079447 Genomic DNA Translation: AAL87535.1
RefSeqiNP_032453.3, NM_008427.4
XP_006520549.1, XM_006520486.3
XP_006520550.1, XM_006520487.3
XP_006520551.1, XM_006520488.3

3D structure databases

SMRiQ8R435
ModBaseiSearch...

PTM databases

SwissPalmiQ8R435

Proteomic databases

ProteomicsDBi340823

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...
Antibodypediai
327, 314 antibodies

The DNASU plasmid repository

More...
DNASUi
16520

Genome annotation databases

EnsembliENSMUST00000057801; ENSMUSP00000094075; ENSMUSG00000044216
GeneIDi16520
KEGGimmu:16520
UCSCiuc007wtn.2, mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3761
MGIiMGI:104743, Kcnj4
VEuPathDBiHostDB:ENSMUSG00000044216

Phylogenomic databases

GeneTreeiENSGT01030000234586
HOGENOMiCLU_022738_11_1_1
OMAiCHVGLSS
OrthoDBi956263at2759
PhylomeDBiQ8R435
TreeFamiTF313676

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...
BioGRID-ORCSi
16520, 1 hit in 48 CRISPR screens

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000044216, Expressed in striatum and 91 other tissues

Family and domain databases

Gene3Di2.60.40.1400, 1 hit
InterProiView protein in InterPro
IPR014756, Ig_E-set
IPR041647, IRK_C
IPR016449, K_chnl_inward-rec_Kir
IPR003273, K_chnl_inward-rec_Kir2.3
IPR013518, K_chnl_inward-rec_Kir_cyto
IPR040445, Kir_TM
PANTHERiPTHR11767, PTHR11767, 1 hit
PTHR11767:SF53, PTHR11767:SF53, 1 hit
PfamiView protein in Pfam
PF01007, IRK, 1 hit
PF17655, IRK_C, 1 hit
PIRSFiPIRSF005465, GIRK_kir, 1 hit
PRINTSiPR01326, KIR23CHANNEL
PR01320, KIRCHANNEL
SUPFAMiSSF81296, SSF81296, 1 hit

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 nameiQ8R435_MOUSE
<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: Q8R435
<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/TrEMBL: June 1, 2002
Last sequence update: June 1, 2002
Last modified: September 29, 2021
This is version 140 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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

Proteomics identificationCombined sources, Reference proteomeImported
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