Incidental Mutation 'R1899:Kcnj3'
ID 214052
Institutional Source Beutler Lab
Gene Symbol Kcnj3
Ensembl Gene ENSMUSG00000026824
Gene Name potassium inwardly-rectifying channel, subfamily J, member 3
Synonyms GIRK1, Kcnf3, Kir3.1
MMRRC Submission 039919-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R1899 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 55325982-55488157 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 55327256 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 15 (V15A)
Ref Sequence ENSEMBL: ENSMUSP00000108252 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000067101] [ENSMUST00000112632] [ENSMUST00000112633]
AlphaFold P63250
Predicted Effect probably damaging
Transcript: ENSMUST00000067101
AA Change: V15A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000063329
Gene: ENSMUSG00000026824
AA Change: V15A

DomainStartEndE-ValueType
low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 385 3.6e-164 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000112632
AA Change: V15A

PolyPhen 2 Score 0.995 (Sensitivity: 0.68; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000108251
Gene: ENSMUSG00000026824
AA Change: V15A

DomainStartEndE-ValueType
low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 235 4e-99 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000112633
AA Change: V15A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000108252
Gene: ENSMUSG00000026824
AA Change: V15A

DomainStartEndE-ValueType
low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 369 1.1e-141 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000128307
Predicted Effect noncoding transcript
Transcript: ENSMUST00000180810
Meta Mutation Damage Score 0.1246 question?
Coding Region Coverage
  • 1x: 97.5%
  • 3x: 97.0%
  • 10x: 95.6%
  • 20x: 93.4%
Validation Efficiency 94% (94/100)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] 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, which has a greater tendency to allow potassium to flow into a cell rather than out of a cell, is controlled by G-proteins and plays an important role in regulating heartbeat. It associates with three other G-protein-activated potassium channels to form a heteromultimeric pore-forming complex that also couples to neurotransmitter receptors in the brain and whereby channel activation can inhibit action potential firing by hyperpolarizing the plasma membrane. These multimeric G-protein-gated inwardly-rectifying potassium (GIRK) channels may play a role in the pathophysiology of epilepsy, addiction, Down's syndrome, ataxia, and Parkinson's disease. Alternative splicing results in multiple transcript variants encoding distinct proteins. [provided by RefSeq, May 2012]
PHENOTYPE: Mice homozygous for a targeted null mutation display slightly increased resting heart rates, and blunted responses to both indirect vagal activation and direct adenosine A1 receptor activation (intended to activate the muscarinic-gated atrial potassium channel). [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 98 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930522L14Rik T A 5: 109,884,664 (GRCm39) Q398L probably benign Het
4930596D02Rik T G 14: 35,532,089 (GRCm39) K162T probably damaging Het
Abca8b G T 11: 109,828,744 (GRCm39) T1353K possibly damaging Het
Abcg3 A C 5: 105,086,065 (GRCm39) C565G probably damaging Het
Actr3b G A 5: 26,034,536 (GRCm39) V185I possibly damaging Het
Akap6 A T 12: 53,188,635 (GRCm39) E2016D possibly damaging Het
Aldh3b2 T C 19: 4,028,662 (GRCm39) V148A possibly damaging Het
Ankfy1 C T 11: 72,645,233 (GRCm39) Q771* probably null Het
Anks1b A G 10: 90,096,618 (GRCm39) D425G probably damaging Het
Arrb1 T C 7: 99,231,504 (GRCm39) probably benign Het
Atg2a C A 19: 6,295,097 (GRCm39) T170N probably damaging Het
Atp8b5 C T 4: 43,361,804 (GRCm39) R617C possibly damaging Het
Bicra T C 7: 15,721,676 (GRCm39) T614A possibly damaging Het
Cacna1i A G 15: 80,275,843 (GRCm39) D167G possibly damaging Het
Calr4 T G 4: 109,103,490 (GRCm39) probably null Het
Camsap3 G T 8: 3,653,922 (GRCm39) E515* probably null Het
Casp8ap2 T C 4: 32,643,647 (GRCm39) S907P probably damaging Het
Cdk19 T A 10: 40,355,776 (GRCm39) probably benign Het
Chst14 A G 2: 118,757,496 (GRCm39) M122V possibly damaging Het
Cntn4 A G 6: 106,652,774 (GRCm39) M748V probably benign Het
Col7a1 A G 9: 108,807,956 (GRCm39) D2552G unknown Het
Cpeb2 C A 5: 43,434,930 (GRCm39) P600Q probably damaging Het
Cyp2a5 C T 7: 26,538,458 (GRCm39) R274* probably null Het
Dele1 T C 18: 38,391,395 (GRCm39) W378R probably benign Het
Dexi A G 16: 10,360,382 (GRCm39) F58S probably damaging Het
Dlg5 C A 14: 24,198,368 (GRCm39) G1522W probably damaging Het
Dock2 T C 11: 34,244,286 (GRCm39) H1048R probably benign Het
Dpp4 T C 2: 62,175,394 (GRCm39) probably benign Het
Dusp10 A T 1: 183,801,377 (GRCm39) K381N possibly damaging Het
Ercc4 A G 16: 12,965,651 (GRCm39) E761G probably damaging Het
Ern2 T C 7: 121,783,065 (GRCm39) probably benign Het
Fam83f A T 15: 80,576,281 (GRCm39) T311S probably damaging Het
Fat2 T C 11: 55,153,004 (GRCm39) D3736G probably benign Het
Fgf11 G T 11: 69,692,279 (GRCm39) T58K probably benign Het
Galntl5 C G 5: 25,403,530 (GRCm39) S167* probably null Het
Glg1 T G 8: 111,892,306 (GRCm39) E846D probably benign Het
Grm8 C A 6: 28,125,894 (GRCm39) E77D probably damaging Het
Hmcn1 A T 1: 150,533,202 (GRCm39) D3028E probably damaging Het
Htt A G 5: 35,064,429 (GRCm39) I2943V probably benign Het
Ift80 T C 3: 68,825,846 (GRCm39) K498R probably benign Het
Ipo9 A T 1: 135,327,884 (GRCm39) M509K probably damaging Het
Kcnn3 A T 3: 89,427,762 (GRCm39) probably benign Het
Larp1b T A 3: 40,918,519 (GRCm39) D53E probably benign Het
Ltf T C 9: 110,851,913 (GRCm39) F117L possibly damaging Het
Maml1 A G 11: 50,156,957 (GRCm39) L406P probably damaging Het
Mnx1 G A 5: 29,678,955 (GRCm39) A376V unknown Het
Mroh2a G A 1: 88,163,098 (GRCm39) R376H probably benign Het
Mrpl4 A G 9: 20,918,127 (GRCm39) Y111C probably damaging Het
Mto1 T C 9: 78,368,799 (GRCm39) probably benign Het
Nalcn A T 14: 123,553,538 (GRCm39) M972K possibly damaging Het
Nemf T C 12: 69,393,152 (GRCm39) I225V probably null Het
Nipal4 T G 11: 46,041,058 (GRCm39) D379A probably damaging Het
Nktr A G 9: 121,577,932 (GRCm39) probably benign Het
Nlrp5 A G 7: 23,104,222 (GRCm39) T28A probably benign Het
Nxph1 T A 6: 9,247,622 (GRCm39) Y198N probably damaging Het
Or4c123 T C 2: 89,127,014 (GRCm39) N200S probably damaging Het
Or5an10 T C 19: 12,275,707 (GRCm39) Y263C probably damaging Het
Or8u10 A T 2: 85,916,064 (GRCm39) V19D probably benign Het
P2rx7 A G 5: 122,811,799 (GRCm39) Y370C probably benign Het
Piezo1 T C 8: 123,209,384 (GRCm39) probably benign Het
Piezo1 T C 8: 123,216,305 (GRCm39) D1401G probably damaging Het
Plxnd1 A G 6: 115,946,324 (GRCm39) L879P probably benign Het
Polr2a A T 11: 69,634,772 (GRCm39) I636N probably damaging Het
Prex2 G T 1: 11,232,590 (GRCm39) E886* probably null Het
Proca1 A T 11: 78,095,847 (GRCm39) I73F probably damaging Het
Prss55 A T 14: 64,316,839 (GRCm39) V101E probably benign Het
Psg26 T A 7: 18,212,350 (GRCm39) H335L probably benign Het
Rai1 A G 11: 60,076,746 (GRCm39) E270G probably benign Het
Reep1 A G 6: 71,757,781 (GRCm39) N127D probably benign Het
Rims1 G T 1: 22,498,725 (GRCm39) P769Q probably damaging Het
Robo4 A T 9: 37,315,366 (GRCm39) probably benign Het
Ryr2 A T 13: 11,606,222 (GRCm39) D888E probably benign Het
Scamp3 A G 3: 89,087,567 (GRCm39) N135D probably damaging Het
Sdk2 C T 11: 113,729,472 (GRCm39) silent Het
Sema4f A G 6: 82,895,010 (GRCm39) M395T probably benign Het
Sgip1 T C 4: 102,825,534 (GRCm39) probably null Het
Sik2 A T 9: 50,906,974 (GRCm39) probably benign Het
Smtn G T 11: 3,481,326 (GRCm39) A223D possibly damaging Het
Spen T C 4: 141,197,654 (GRCm39) T3405A probably benign Het
Srebf1 A G 11: 60,094,312 (GRCm39) L601P probably damaging Het
Srsf11 A T 3: 157,737,217 (GRCm39) probably benign Het
Tacc2 T G 7: 130,225,932 (GRCm39) S891R possibly damaging Het
Tbc1d17 T A 7: 44,491,057 (GRCm39) probably benign Het
Tgfbr3l C A 8: 4,299,600 (GRCm39) R128S probably damaging Het
Thsd1 G A 8: 22,742,334 (GRCm39) probably benign Het
Tlx3 T C 11: 33,153,072 (GRCm39) S130G probably benign Het
Tmem25 A T 9: 44,709,513 (GRCm39) probably null Het
Trak2 A T 1: 58,985,495 (GRCm39) M1K probably null Het
Trappc12 C T 12: 28,796,984 (GRCm39) E183K probably damaging Het
Ubl3 A G 5: 148,446,090 (GRCm39) V71A possibly damaging Het
Unc50 A G 1: 37,477,880 (GRCm39) Y254C probably damaging Het
Unkl T C 17: 25,448,434 (GRCm39) probably null Het
Uso1 T A 5: 92,349,051 (GRCm39) S819T probably benign Het
Yes1 A T 5: 32,802,395 (GRCm39) R103S probably damaging Het
Zfp131 A G 13: 120,228,561 (GRCm39) V396A probably damaging Het
Zfp553 T C 7: 126,834,826 (GRCm39) I127T possibly damaging Het
Zfp599 A T 9: 22,162,845 (GRCm39) N102K probably benign Het
Zmynd10 A T 9: 107,427,236 (GRCm39) Q288L probably benign Het
Other mutations in Kcnj3
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00673:Kcnj3 APN 2 55,485,284 (GRCm39) missense possibly damaging 0.88
IGL01889:Kcnj3 APN 2 55,327,216 (GRCm39) missense possibly damaging 0.69
IGL01988:Kcnj3 APN 2 55,327,243 (GRCm39) missense probably benign 0.43
IGL01989:Kcnj3 APN 2 55,327,243 (GRCm39) missense probably benign 0.43
IGL02004:Kcnj3 APN 2 55,327,243 (GRCm39) missense probably benign 0.43
IGL02035:Kcnj3 APN 2 55,327,590 (GRCm39) missense probably damaging 1.00
R0268:Kcnj3 UTSW 2 55,484,971 (GRCm39) nonsense probably null
R0565:Kcnj3 UTSW 2 55,485,276 (GRCm39) missense probably benign 0.03
R0853:Kcnj3 UTSW 2 55,327,235 (GRCm39) missense possibly damaging 0.69
R1318:Kcnj3 UTSW 2 55,327,750 (GRCm39) missense possibly damaging 0.88
R1592:Kcnj3 UTSW 2 55,327,898 (GRCm39) missense probably damaging 1.00
R1756:Kcnj3 UTSW 2 55,327,232 (GRCm39) missense probably damaging 1.00
R1966:Kcnj3 UTSW 2 55,327,343 (GRCm39) missense probably damaging 0.99
R2891:Kcnj3 UTSW 2 55,337,027 (GRCm39) missense probably damaging 1.00
R2892:Kcnj3 UTSW 2 55,337,027 (GRCm39) missense probably damaging 1.00
R2893:Kcnj3 UTSW 2 55,337,027 (GRCm39) missense probably damaging 1.00
R3901:Kcnj3 UTSW 2 55,327,360 (GRCm39) missense possibly damaging 0.46
R4470:Kcnj3 UTSW 2 55,327,877 (GRCm39) missense probably damaging 1.00
R4603:Kcnj3 UTSW 2 55,336,991 (GRCm39) nonsense probably null
R4694:Kcnj3 UTSW 2 55,484,918 (GRCm39) missense probably benign 0.00
R4945:Kcnj3 UTSW 2 55,327,590 (GRCm39) missense probably damaging 1.00
R5144:Kcnj3 UTSW 2 55,337,059 (GRCm39) splice site probably null
R5332:Kcnj3 UTSW 2 55,327,559 (GRCm39) missense probably damaging 1.00
R5959:Kcnj3 UTSW 2 55,327,330 (GRCm39) missense probably benign 0.10
R6352:Kcnj3 UTSW 2 55,327,561 (GRCm39) missense probably benign 0.06
R7042:Kcnj3 UTSW 2 55,484,877 (GRCm39) missense possibly damaging 0.87
R7475:Kcnj3 UTSW 2 55,327,338 (GRCm39) missense probably benign 0.09
R7626:Kcnj3 UTSW 2 55,484,833 (GRCm39) nonsense probably null
R7771:Kcnj3 UTSW 2 55,336,949 (GRCm39) missense probably damaging 1.00
R8225:Kcnj3 UTSW 2 55,327,726 (GRCm39) missense probably damaging 1.00
R8558:Kcnj3 UTSW 2 55,336,875 (GRCm39) missense possibly damaging 0.91
R8986:Kcnj3 UTSW 2 55,485,039 (GRCm39) missense probably benign
R9653:Kcnj3 UTSW 2 55,484,864 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- CAAAGACTGCTGCTACCTGC -3'
(R):5'- ACTTGAGATCCACCAGGGTAG -3'

Sequencing Primer
(F):5'- GTGCTCCCCACCCCCAC -3'
(R):5'- CTTGAGATCCACCAGGGTAGTGAAG -3'
Posted On 2014-07-14