Gene: KCNJ2

Basic information

Tag Content
Uniprot ID P63252; O15110; P48049;
Entrez ID 3759
Genbank protein ID AAF73241.1; AAB50277.1; AAC50072.1; AAC39555.1; AAA91781.1; AAB88797.1; AAA64282.1; AAF73242.1;
Genbank nucleotide ID NM_000891.2
Ensembl protein ID ENSP00000441848; ENSP00000243457;
Ensembl nucleotide ID ENSG00000123700
Gene name Inward rectifier potassium channel 2
Gene symbol KCNJ2
Organism Homo sapiens
NCBI taxa ID 9606
Cleft type
Developmental stage
Data sources Homology search
Reference
Functional description Probably participates in establishing action potential waveform and excitability of neuronal and muscle tissues. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by extracellular barium or cesium.
Sequence
MGSVRTNRYS IVSSEEDGMK LATMAVANGF GNGKSKVHTR QQCRSRFVKK DGHCNVQFIN 60
VGEKGQRYLA DIFTTCVDIR WRWMLVIFCL AFVLSWLFFG CVFWLIALLH GDLDASKEGK 120
ACVSEVNSFT AAFLFSIETQ TTIGYGFRCV TDECPIAVFM VVFQSIVGCI IDAFIIGAVM 180
AKMAKPKKRN ETLVFSHNAV IAMRDGKLCL MWRVGNLRKS HLVEAHVRAQ LLKSRITSEG 240
EYIPLDQIDI NVGFDSGIDR IFLVSPITIV HEIDEDSPLY DLSKQDIDNA DFEIVVILEG 300
MVEATAMTTQ CRSSYLANEI LWGHRYEPVL FEEKHYYKVD YSRFHKTYEV PNTPLCSARD 360
LAEKKYILSN ANSFCYENEV ALTSKEEDDS ENGVPESTST DTPPDIDLHN QASVPLEPRP 420
LRRESEI 427

Abbreviation :
CLO : cleft lip only. CPO : cleft palate only. CLP : cleft lip and palate. CL/P : cleft lip with/without cleft palate.
For humans: CL/P, CLO, CPO, and CLP. For mice: CLO, CLP, and CPO.

Gene expression information

Gene expression in different tissues (GTEx V7)

  

Gene expression in different tissues (ENCODE)

  

Protein structural annotations

3D structure in PDB database


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Protein disorder information

Orthologous information

Relation Gene symbol Entrez ID UniProt ID Cleft type Developmental stage Species Evidence Details
1:1 orthologKCNJ2281883O19182Bos taurusPredictionMore>>
1:1 orthologKCNJ2403717Q9MYY9Canis lupus familiarisPredictionMore>>
1:1 orthologKCNJ2102168940A0A452DN29Capra hircusPredictionMore>>
1:1 orthologKCNJ2100052953F7C3Q3Equus caballusPredictionMore>>
1:1 orthologKCNJ23759P63252Homo sapiensPredictionMore>>
1:1 orthologKcnj216518P35561CPOMus musculusPublicationMore>>
1:1 orthologKCNJ2468312H2QDR5Pan troglodytesPredictionMore>>
1:1 orthologKCNJ2397293O18839Sus scrofaPredictionMore>>
1:1 orthologKCNJ2100008987P49656Oryctolagus cuniculusPredictionMore>>
1:1 orthologKcnj229712Q64273Rattus norvegicusPredictionMore>>
1:1 orthologkcnj2a564522E7FGH1Danio rerioPredictionMore>>

Other genetic variants/mutations

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Disease or phenotype associated information

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Gene Ontology (GO)/biological pathways

GO:Molecular Function

GO ID GO Term Evidence
GO:0005242 inward rectifier potassium channel activityIDA
GO:0005242 inward rectifier potassium channel activityIBA
GO:0005546 phosphatidylinositol-4,5-bisphosphate bindingIDA
GO:0042802 identical protein bindingIEA
GO:0086008 voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarizationIMP

GO:Biological Process

GO ID GO Term Evidence
GO:0006813 potassium ion transportIDA
GO:0014861 regulation of skeletal muscle contraction via regulation of action potentialIMP
GO:0015693 magnesium ion transportIEA
GO:0030007 cellular potassium ion homeostasisTAS
GO:0034765 regulation of ion transmembrane transportIBA
GO:0051289 protein homotetramerizationIDA
GO:0055119 relaxation of cardiac muscleIMP
GO:0060075 regulation of resting membrane potentialTAS
GO:0060306 regulation of membrane repolarizationIDA
GO:0061337 cardiac conductionTAS
GO:0071260 cellular response to mechanical stimulusIEA
GO:0071805 potassium ion transmembrane transportIDA
GO:0086002 cardiac muscle cell action potential involved in contractionIMP
GO:0086004 regulation of cardiac muscle cell contractionIEA
GO:0086011 membrane repolarization during action potentialIMP
GO:0086012 membrane depolarization during cardiac muscle cell action potentialTAS
GO:0086013 membrane repolarization during cardiac muscle cell action potentialIMP
GO:0086013 membrane repolarization during cardiac muscle cell action potentialTAS
GO:0086091 regulation of heart rate by cardiac conductionIMP
GO:0090076 relaxation of skeletal muscleIMP
GO:1901381 positive regulation of potassium ion transmembrane transportIEA
GO:1990573 potassium ion import across plasma membraneIDA
GO:1990573 potassium ion import across plasma membraneIBA

GO:Cellular Component

GO ID GO Term Evidence
GO:0005623 cellIEA
GO:0005790 smooth endoplasmic reticulumIEA
GO:0005791 rough endoplasmic reticulumIEA
GO:0005794 Golgi apparatusIEA
GO:0005886 plasma membraneTAS
GO:0005887 integral component of plasma membraneTAS
GO:0008076 voltage-gated potassium channel complexIDA
GO:0014704 intercalated discIEA
GO:0030315 T-tubuleIEA
GO:0031224 intrinsic component of membraneIDA
GO:0043025 neuronal cell bodyIEA
GO:0043197 dendritic spineIEA

Reactome Pathway

Reactome ID Reactome Term Evidence
R-HSA-112314 Neurotransmitter receptors and postsynaptic signal transmissionTAS
R-HSA-112315 Transmission across Chemical SynapsesTAS
R-HSA-112316 Neuronal SystemTAS
R-HSA-1296041 Activation of G protein gated Potassium channelsTAS
R-HSA-1296053 Classical Kir channelsTAS
R-HSA-1296059 G protein gated Potassium channelsTAS
R-HSA-1296065 Inwardly rectifying K+ channelsTAS
R-HSA-1296071 Potassium ChannelsTAS
R-HSA-397014 Muscle contractionTAS
R-HSA-5576886 Phase 4 - resting membrane potentialTAS
R-HSA-5576891 Cardiac conductionTAS
R-HSA-977443 GABA receptor activationTAS
R-HSA-977444 GABA B receptor activationTAS
R-HSA-991365 Activation of GABAB receptorsTAS
R-HSA-997272 Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunitsTAS

Drugs and compounds information

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Functional annotations

Keywords

Keyword ID Keyword Term
KW-0002 3D-structure
KW-1020 Atrial fibrillation
KW-0225 Disease mutation
KW-0407 Ion channel
KW-0406 Ion transport
KW-0449 Lipoprotein
KW-0454 Long QT syndrome
KW-0472 Membrane
KW-0519 Myristate
KW-0630 Potassium
KW-0633 Potassium transport
KW-1185 Reference proteome
KW-0702 S-nitrosylation
KW-0940 Short QT syndrome
KW-0812 Transmembrane
KW-1133 Transmembrane helix
KW-0813 Transport
KW-0851 Voltage-gated channel

Interpro

InterPro ID InterPro Term
IPR014756 Ig_E-set
IPR041647 IRK_C
IPR016449 K_chnl_inward-rec_Kir
IPR003271 K_chnl_inward-rec_Kir2.1
IPR013518 K_chnl_inward-rec_Kir_cyto
IPR013673 K_chnl_inward-rec_Kir_N
IPR040445 Kir_TM

PROSITE

PROSITE ID PROSITE Term

Pfam

Pfam ID Pfam Term
PF01007 IRK
PF17655 IRK_C
PF08466 IRK_N

Protein-protein interaction

Protein-miRNA interaction