Gene Gene information from NCBI Gene database.
Entrez ID 3759
Gene name Potassium inwardly rectifying channel subfamily J member 2
Gene symbol KCNJ2
Synonyms (NCBI Gene)
ATFB9HHBIRK1HHIRK1IRK1KIR2.1LQT7SQT3
Chromosome 17
Chromosome location 17q24.3
Summary Potassium channels are present in most mammalian cells, where they participate in a wide range of physiologic responses. The protein encoded by this gene is an integral membrane protein and inward-rectifier type potassium channel. The encoded protein, whi
SNPs SNP information provided by dbSNP.
44
SNP ID Visualize variation Clinical significance Consequence
rs104894575 A>T Pathogenic, not-provided Missense variant, coding sequence variant
rs104894578 C>T Pathogenic, not-provided Missense variant, coding sequence variant
rs104894579 G>A,C,T Pathogenic, not-provided Missense variant, coding sequence variant
rs104894580 C>A,T Pathogenic, not-provided Synonymous variant, missense variant, coding sequence variant
rs104894581 C>A,T Pathogenic, not-provided, uncertain-significance Missense variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
334
miRTarBase ID miRNA Experiments Reference
MIRT001983 hsa-miR-1-3p Luciferase reporter assay 17401374
MIRT001983 hsa-miR-1-3p Luciferase reporter assay 17401374
MIRT001983 hsa-miR-1-3p Luciferase reporter assay 17401374
MIRT001983 hsa-miR-1-3p Luciferase reporter assay 17401374
MIRT001983 hsa-miR-1-3p Luciferase reporter assay 17401374
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
52
GO ID Ontology Definition Evidence Reference
GO:0005242 Function Inward rectifier potassium channel activity IBA
GO:0005242 Function Inward rectifier potassium channel activity IDA 7696590, 7840300, 8821791, 9490857, 9533862, 11371347, 12086641, 20921230, 36149965
GO:0005242 Function Inward rectifier potassium channel activity IEA
GO:0005242 Function Inward rectifier potassium channel activity IMP 15761194, 15922306, 16571646, 17324964, 36149965
GO:0005515 Function Protein binding IPI 30126976, 32296183, 32541000
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
600681 6263 ENSG00000123700
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P63252
Protein name Inward rectifier potassium channel 2 (Cardiac inward rectifier potassium channel) (Inward rectifier K(+) channel Kir2.1) (IRK-1) (hIRK1) (Potassium channel, inwardly rectifying subfamily J member 2)
Protein function Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it (PubMed:36149965, PubMed:7590287, PubMed:9490857). Their voltage dependence is regulated by the concentrat
PDB 6SPZ , 7ZDZ , 8QQL
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF08466 IRK_N 1 47 Inward rectifier potassium channel N-terminal Family
PF01007 IRK 48 186 Inward rectifier potassium channel transmembrane domain Domain
PF17655 IRK_C 193 366 Inward rectifier potassium channel C-terminal domain Domain
Tissue specificity TISSUE SPECIFICITY: Heart, brain, placenta, lung, skeletal muscle, and kidney. Diffusely distributed throughout the brain.
Sequence
Sequence length 427
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Cholinergic synapse
Oxytocin signaling pathway
Renin secretion
Gastric acid secretion
  Activation of G protein gated Potassium channels
Classical Kir channels
Phase 4 - resting membrane potential
Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
54
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Andersen Tawil syndrome Likely pathogenic; Pathogenic rs104894583, rs2144377213, rs199473385, rs786205820, rs199473372, rs864622292, rs104894575, rs104894578, rs104894579, rs2144376746, rs104894580, rs104894581, rs104894582, rs104894584, rs104894585
View all (25 more)
RCV002015482
RCV002021951
RCV001971766
RCV000644779
RCV002894880
View all (43 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Atrial fibrillation, familial, 1 Pathogenic rs199473377 RCV001824594
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Atrial fibrillation, familial, 9 Likely pathogenic; Pathogenic rs104894578, rs104894580, rs786205817, rs199473377, rs199473384 RCV005222677
RCV000763415
RCV000850566
RCV001535632
RCV002483105
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Cardiac arrhythmia Likely pathogenic; Pathogenic rs1555603994, rs199473653, rs199473387 RCV002282268
RCV004700362
RCV001841764
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
ANDERSEN CARDIODYSRHYTHMIC PERIODIC PARALYSIS HPO
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANDERSEN SYNDROME CTD, Disgenet
CTD, Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANDERSEN-TAWIL SYNDROME Disgenet, Orphanet
Disgenet, Orphanet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ARRHYTHMIAS, CARDIAC CTD
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Andersen Syndrome Andersen Syndrome CLINVAR_DG 11371347, 12086641, 12148092, 12163457, 12796536, 12909315, 14522976, 15911703, 16217063, 16818210, 17074642, 17074643, 17119796, 17211524, 17221872
View all (16 more)
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome UNIPROT_DG 11371347, 12148092, 12163457, 16571646, 17324964
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome LHGDN 12032359, 12148092, 12163457, 16541386, 17324964, 18690034
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome BEFREE 12045162, 12148092, 12163457, 12689820, 12796536, 14522976, 15176421, 15176430, 15276028, 15466642, 15911703, 15922306, 16217063, 16500306, 16541386
View all (45 more)
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen-tawil syndrome Pubtator 12148092, 14522976, 17119796, 17341397, 21148745, 21703452, 22166941, 23516313, 24047492, 24861851, 26109178, 28315637, 28336205, 29017447, 30516532
View all (11 more)
Associate
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome GENOMICS_ENGLAND_DG 12163457, 12796536, 16217063, 25691870, 27761157
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome ORPHANET_DG 16571646
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen Syndrome Andersen Syndrome CTD_human_DG 17399643, 19931173
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Andersen-Tawil syndrome Andersen Tawil Syndrome Orphanet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Arrhythmias Cardiac Cardiac arrhythmias Pubtator 12148092, 17341397, 24047492, 24561538, 24861851, 35762211, 39969299 Associate
★☆☆☆☆
Found in Text Mining only