Incidental Mutation 'R1756:Kcnj3'
ID194829
Institutional Source Beutler Lab
Gene Symbol Kcnj3
Ensembl Gene ENSMUSG00000026824
Gene Namepotassium inwardly-rectifying channel, subfamily J, member 3
SynonymsGIRK1, Kcnf3, Kir3.1
MMRRC Submission 039788-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R1756 (G1)
Quality Score225
Status Validated
Chromosome2
Chromosomal Location55435970-55598145 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to C at 55437220 bp
ZygosityHeterozygous
Amino Acid Change Lysine to Threonine at position 7 (K7T)
Ref Sequence ENSEMBL: ENSMUSP00000108252 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000067101] [ENSMUST00000112632] [ENSMUST00000112633]
Predicted Effect probably damaging
Transcript: ENSMUST00000067101
AA Change: K7T

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000063329
Gene: ENSMUSG00000026824
AA Change: K7T

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: K7T

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000108251
Gene: ENSMUSG00000026824
AA Change: K7T

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: K7T

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000108252
Gene: ENSMUSG00000026824
AA Change: K7T

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 0.118 question?
Coding Region Coverage
  • 1x: 97.5%
  • 3x: 96.9%
  • 10x: 95.5%
  • 20x: 93.0%
Validation Efficiency 100% (96/96)
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: 94 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2010111I01Rik T A 13: 63,068,061 H382Q possibly damaging Het
A330008L17Rik C A 8: 99,421,882 noncoding transcript Het
Acin1 A G 14: 54,665,204 V377A probably benign Het
Adam39 A T 8: 40,825,324 I251F probably damaging Het
Adnp2 A T 18: 80,127,697 *1166K probably null Het
Akap12 T A 10: 4,357,574 D1461E probably benign Het
Apba1 A G 19: 23,893,692 D296G possibly damaging Het
Apol7a G T 15: 77,393,471 L26M possibly damaging Het
Bcl2 C T 1: 106,712,392 M163I probably damaging Het
Cap2 T G 13: 46,531,013 I53R probably benign Het
Ccdc105 T A 10: 78,747,197 K451M probably damaging Het
Ccdc74a T C 16: 17,650,468 V318A possibly damaging Het
Ccnb2 A G 9: 70,410,788 V234A probably benign Het
Cd207 C T 6: 83,675,597 V184I probably benign Het
Cdk12 C A 11: 98,241,761 C1005* probably null Het
Cep83 T C 10: 94,750,267 S344P probably damaging Het
Ces1g A T 8: 93,306,954 Y447N probably benign Het
Cfap54 A T 10: 93,048,061 L277Q probably damaging Het
Cfh A G 1: 140,100,877 Y1027H probably damaging Het
Clcnkb T A 4: 141,415,214 I28F possibly damaging Het
Clec4d A G 6: 123,267,109 D59G probably damaging Het
Colq G A 14: 31,547,452 P153S probably damaging Het
Crybg1 T A 10: 43,986,279 T1500S probably damaging Het
Cyp2d34 T A 15: 82,617,524 R262W probably damaging Het
Dennd4b C G 3: 90,271,605 L559V probably damaging Het
Dhrs1 A G 14: 55,739,309 V306A probably benign Het
Diaph1 A T 18: 37,854,573 D1043E possibly damaging Het
Dis3 G T 14: 99,086,103 D538E probably damaging Het
Dnaic2 T G 11: 114,750,380 S344A probably benign Het
Dner C T 1: 84,445,590 V431M probably damaging Het
Dnm1l A G 16: 16,342,695 probably null Het
Eps15 T G 4: 109,312,918 L139* probably null Het
Fam193a T A 5: 34,466,292 I55N possibly damaging Het
Gm10308 T A 17: 91,088,957 Y102* probably null Het
Gm10509 A G 17: 21,690,855 K30E possibly damaging Het
Gm4778 A T 3: 94,266,218 M174L probably benign Het
Gm9573 A T 17: 35,619,239 probably benign Het
Gpr155 T C 2: 73,367,577 M400V probably benign Het
H2-M10.2 T C 17: 36,286,123 probably benign Het
Heatr1 G T 13: 12,396,460 A61S probably benign Het
Helb G T 10: 120,094,242 T744K probably damaging Het
Hmcn1 C A 1: 150,599,030 W4702L probably damaging Het
Hmcn2 C T 2: 31,396,120 R2095W probably damaging Het
Igfbp3 G C 11: 7,208,461 D267E probably damaging Het
Ighmbp2 T A 19: 3,268,669 H469L probably damaging Het
Krtap5-5 T G 7: 142,229,621 K97N unknown Het
Lcor T C 19: 41,559,266 S430P probably benign Het
Lpin1 A G 12: 16,538,540 V883A probably damaging Het
Lrp1b T C 2: 41,110,825 Y2243C probably damaging Het
Lrrc46 G A 11: 97,034,730 probably benign Het
Man1c1 G C 4: 134,703,438 P11R probably damaging Het
Mpdz C T 4: 81,306,877 V1438M possibly damaging Het
Ncbp1 T A 4: 46,169,131 L635* probably null Het
Nipbl T C 15: 8,338,551 N1202D possibly damaging Het
Nphs1 A G 7: 30,461,534 D196G probably benign Het
Nupl1 A T 14: 60,244,670 probably benign Het
Olfr1008 A G 2: 85,690,083 Y218C probably damaging Het
Olfr1360 A G 13: 21,674,695 I83T probably benign Het
Olfr901 A T 9: 38,430,995 I238F probably benign Het
Pax8 A T 2: 24,435,821 N350K probably damaging Het
Pik3cd T C 4: 149,658,750 K298E probably benign Het
Pkd1 C T 17: 24,594,485 R4000C probably damaging Het
Pkn2 A T 3: 142,810,727 V546D possibly damaging Het
Plcg2 A G 8: 117,592,708 K673E probably benign Het
Pld4 T G 12: 112,763,392 probably null Het
Plek A T 11: 16,992,901 N130K probably damaging Het
Prune2 G A 19: 17,123,704 D2191N probably benign Het
Ptgis T C 2: 167,206,803 Y431C probably damaging Het
Rhbdf2 T C 11: 116,607,266 S36G probably benign Het
Rtn4ip1 C T 10: 43,910,830 A178V probably damaging Het
Rxfp1 A G 3: 79,670,881 S168P probably benign Het
Sec24a A G 11: 51,733,763 probably benign Het
Shf G A 2: 122,368,682 P51S probably damaging Het
Slitrk6 C T 14: 110,750,552 M574I probably benign Het
Slk T C 19: 47,622,677 F861L probably damaging Het
Smpd3 C A 8: 106,264,971 A317S probably benign Het
Spz1 T A 13: 92,575,125 Q281L probably damaging Het
Syde1 T A 10: 78,586,980 R519S probably benign Het
Taf4 T C 2: 179,976,531 H39R unknown Het
Tbx5 A T 5: 119,845,113 probably null Het
Tenm2 C T 11: 36,063,177 G1236R possibly damaging Het
Th G A 7: 142,898,166 Q19* probably null Het
Tmprss11a T A 5: 86,420,179 I230F probably damaging Het
Tnfrsf14 T A 4: 154,925,322 H50L possibly damaging Het
Tpp2 T A 1: 43,978,725 probably null Het
Trappc9 G A 15: 73,025,967 R377W probably damaging Het
Trim2 A G 3: 84,190,800 I398T possibly damaging Het
Trpc5 A T X: 144,481,226 S212T probably damaging Het
Ttn A G 2: 76,787,334 probably benign Het
Unc80 A G 1: 66,639,248 T2063A possibly damaging Het
Usp37 A T 1: 74,479,655 S260T probably benign Het
Vcan A G 13: 89,691,681 S1915P probably benign Het
Vmn1r33 T A 6: 66,612,298 I91F possibly damaging Het
Zfp422 T C 6: 116,626,424 T205A probably benign Het
Other mutations in Kcnj3
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00673:Kcnj3 APN 2 55595272 missense possibly damaging 0.88
IGL01889:Kcnj3 APN 2 55437204 missense possibly damaging 0.69
IGL01988:Kcnj3 APN 2 55437231 missense probably benign 0.43
IGL01989:Kcnj3 APN 2 55437231 missense probably benign 0.43
IGL02004:Kcnj3 APN 2 55437231 missense probably benign 0.43
IGL02035:Kcnj3 APN 2 55437578 missense probably damaging 1.00
R0268:Kcnj3 UTSW 2 55594959 nonsense probably null
R0565:Kcnj3 UTSW 2 55595264 missense probably benign 0.03
R0853:Kcnj3 UTSW 2 55437223 missense possibly damaging 0.69
R1318:Kcnj3 UTSW 2 55437738 missense possibly damaging 0.88
R1592:Kcnj3 UTSW 2 55437886 missense probably damaging 1.00
R1899:Kcnj3 UTSW 2 55437244 missense probably damaging 1.00
R1966:Kcnj3 UTSW 2 55437331 missense probably damaging 0.99
R2891:Kcnj3 UTSW 2 55447015 missense probably damaging 1.00
R2892:Kcnj3 UTSW 2 55447015 missense probably damaging 1.00
R2893:Kcnj3 UTSW 2 55447015 missense probably damaging 1.00
R3901:Kcnj3 UTSW 2 55437348 missense possibly damaging 0.46
R4470:Kcnj3 UTSW 2 55437865 missense probably damaging 1.00
R4603:Kcnj3 UTSW 2 55446979 nonsense probably null
R4694:Kcnj3 UTSW 2 55594906 missense probably benign 0.00
R4945:Kcnj3 UTSW 2 55437578 missense probably damaging 1.00
R5144:Kcnj3 UTSW 2 55447047 splice site probably null
R5332:Kcnj3 UTSW 2 55437547 missense probably damaging 1.00
R5959:Kcnj3 UTSW 2 55437318 missense probably benign 0.10
R6352:Kcnj3 UTSW 2 55437549 missense probably benign 0.06
Predicted Primers PCR Primer
(F):5'- TCCTGGAAAGAAAGCCTCTGTCCC -3'
(R):5'- GTTACCATGCTGCACATTGCACC -3'

Sequencing Primer
(F):5'- GCAAAGACTGCTGCTACCTG -3'
(R):5'- TTCTTGTCCACGAACCGCT -3'
Posted On2014-05-23