Incidental Mutation 'R1966:Kcnj3'
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 039979-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R1966 (G1)
Quality Score225
Status Not validated
Chromosomal Location55435970-55598145 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to T at 55437331 bp
Amino Acid Change Glutamine to Leucine at position 44 (Q44L)
Ref Sequence ENSEMBL: ENSMUSP00000108251 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000067101] [ENSMUST00000112632] [ENSMUST00000112633]
Predicted Effect possibly damaging
Transcript: ENSMUST00000067101
AA Change: Q44L

PolyPhen 2 Score 0.497 (Sensitivity: 0.88; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000063329
Gene: ENSMUSG00000026824
AA Change: Q44L

low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 385 3.6e-164 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000112632
AA Change: Q44L

PolyPhen 2 Score 0.990 (Sensitivity: 0.72; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000108251
Gene: ENSMUSG00000026824
AA Change: Q44L

low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 235 4e-99 PFAM
Predicted Effect possibly damaging
Transcript: ENSMUST00000112633
AA Change: Q44L

PolyPhen 2 Score 0.497 (Sensitivity: 0.88; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000108252
Gene: ENSMUSG00000026824
AA Change: Q44L

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
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.5%
  • 10x: 97.0%
  • 20x: 94.6%
Validation Efficiency
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: 100 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1810013L24Rik A G 16: 8,830,581 E41G possibly damaging Het
2410002F23Rik T A 7: 44,251,226 V185E probably benign Het
Abca1 A C 4: 53,050,409 V1608G probably damaging Het
Ap2b1 T C 11: 83,346,895 I557T probably benign Het
Arhgef15 G T 11: 68,954,675 P117Q probably damaging Het
Arhgef39 T C 4: 43,496,710 S335G probably benign Het
Blm A T 7: 80,513,186 F139Y possibly damaging Het
Cacna2d1 C T 5: 16,333,785 R581* probably null Het
Cadps C A 14: 12,822,450 E97* probably null Het
Cavin2 T A 1: 51,289,642 L86Q probably damaging Het
Ccdc136 A G 6: 29,418,092 E787G probably damaging Het
Ccdc39 T C 3: 33,826,480 K446R probably damaging Het
Cdh23 T C 10: 60,323,582 Y2138C probably damaging Het
Cdk12 T A 11: 98,204,090 Y241* probably null Het
Clcn4 T A 7: 7,284,185 *688L probably null Het
Cntnap1 T C 11: 101,180,386 V375A possibly damaging Het
Coq5 T A 5: 115,294,831 probably null Het
Cyp4b1 A G 4: 115,625,879 I405T probably benign Het
Det1 T C 7: 78,843,218 Y346C probably damaging Het
Enpp3 A T 10: 24,807,491 V276E probably damaging Het
Epb41l2 G A 10: 25,441,768 R61Q probably benign Het
Fam76b G A 9: 13,828,066 probably null Het
Fbxo45 A T 16: 32,233,230 D238E probably benign Het
Fnip2 G A 3: 79,493,472 T314I probably benign Het
Fsip2 T C 2: 82,992,780 S6286P possibly damaging Het
Gbf1 T C 19: 46,271,564 F999L probably damaging Het
Gm14139 T A 2: 150,191,907 D49E probably benign Het
Gnao1 C A 8: 93,944,199 T102K probably benign Het
Gpatch2 T A 1: 187,322,301 D76E probably damaging Het
Gpd1l A G 9: 114,914,394 I146T probably benign Het
Grik2 A T 10: 49,355,909 H508Q probably damaging Het
Hk3 A T 13: 55,014,455 F112Y probably damaging Het
Hmcn2 T G 2: 31,389,329 I1781S probably damaging Het
Inhba A T 13: 16,026,636 K261M probably damaging Het
Jarid2 T A 13: 44,906,276 N661K probably damaging Het
Kcna2 T C 3: 107,104,630 S176P probably damaging Het
Kcns1 G T 2: 164,168,535 F101L probably damaging Het
Kdm5b T A 1: 134,613,873 probably null Het
Klhl14 C T 18: 21,554,673 G564D probably damaging Het
Klhl18 A T 9: 110,476,590 V2E probably benign Het
Klhl6 T C 16: 19,982,822 E61G probably damaging Het
Krt1 T C 15: 101,848,992 D261G probably benign Het
Lama5 C A 2: 180,188,352 C1896F probably damaging Het
Lrba A G 3: 86,605,868 probably null Het
Lrch3 A G 16: 32,914,385 T82A possibly damaging Het
Maml3 C G 3: 52,104,139 G2A unknown Het
Mapkap1 T A 2: 34,518,679 N34K probably damaging Het
Muc13 A T 16: 33,814,539 I488F probably damaging Het
Muc5ac A G 7: 141,803,376 D1129G possibly damaging Het
Nacc1 A T 8: 84,676,381 N288K probably damaging Het
Nek1 T G 8: 61,016,296 I129R probably damaging Het
Nf1 T A 11: 79,411,564 S319R possibly damaging Het
Nle1 C T 11: 82,901,788 G432D probably damaging Het
Nol4l A G 2: 153,529,455 V103A probably benign Het
Oca2 A G 7: 56,414,467 I737V probably damaging Het
Olfr1270 T C 2: 90,149,404 S201G probably damaging Het
Olfr231 G T 1: 174,117,251 S255* probably null Het
Olfr346 G A 2: 36,688,784 V261I probably benign Het
Olfr358 A T 2: 37,004,948 F222Y possibly damaging Het
Olfr630 G T 7: 103,755,168 T139K probably damaging Het
Olfr655 A G 7: 104,596,801 C127R probably damaging Het
Olfr750 T A 14: 51,071,157 I79F probably damaging Het
Orc1 T A 4: 108,612,217 I746N probably damaging Het
Pbxip1 A G 3: 89,445,488 D147G probably damaging Het
Pirb A T 7: 3,717,638 L287Q probably benign Het
Plin5 T A 17: 56,112,186 D412V probably damaging Het
Plxna2 A T 1: 194,644,700 Y314F possibly damaging Het
Ppid A T 3: 79,602,299 K308* probably null Het
Prss38 T C 11: 59,373,484 Y219C probably damaging Het
Ptx3 C T 3: 66,224,621 R188C probably damaging Het
Ralgds T A 2: 28,545,875 V504E probably damaging Het
Rere T C 4: 150,616,873 Y1237H probably damaging Het
Rpp30 C T 19: 36,089,149 S94L probably damaging Het
Rrp15 C T 1: 186,736,205 V205I possibly damaging Het
Scpep1 A G 11: 88,952,414 W73R probably damaging Het
Sec23ip A G 7: 128,755,353 H376R probably damaging Het
Serping1 G T 2: 84,765,728 T454K probably damaging Het
Shtn1 T G 19: 58,975,038 Y615S probably benign Het
Slc20a2 C A 8: 22,545,537 P184T probably damaging Het
Slc22a29 C A 19: 8,218,408 R89L probably damaging Het
Slc2a2 A G 3: 28,719,485 Q313R probably damaging Het
Tas2r122 A T 6: 132,711,194 Y245* probably null Het
Ticrr C A 7: 79,694,735 C1449* probably null Het
Tmem181a T C 17: 6,303,226 V412A probably benign Het
Tmtc4 T A 14: 122,927,599 E616V probably benign Het
Tnrc6b A G 15: 80,880,439 K714R probably damaging Het
Trpm8 T A 1: 88,332,748 probably null Het
Ubr2 T C 17: 46,954,919 T1163A probably benign Het
Ubr4 A G 4: 139,451,244 probably null Het
Ulk2 A T 11: 61,819,471 probably null Het
Ulk4 T A 9: 121,257,116 M350L probably benign Het
Vmn1r185 T C 7: 26,611,531 E183G probably benign Het
Vmn1r76 T A 7: 11,930,514 I223F probably damaging Het
Wdr27 T C 17: 14,934,599 T19A possibly damaging Het
Wdr59 T G 8: 111,450,903 T973P possibly damaging Het
Wnk2 A G 13: 49,039,011 S664P probably damaging Het
Zfp120 A T 2: 150,117,398 C335S probably damaging Het
Zfp30 C A 7: 29,792,452 Q44K probably benign Het
Zfp541 T C 7: 16,079,071 S550P probably benign Het
Zw10 C A 9: 49,068,833 N421K probably damaging 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
R1756:Kcnj3 UTSW 2 55437220 missense probably damaging 1.00
R1899:Kcnj3 UTSW 2 55437244 missense probably damaging 1.00
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

Sequencing Primer
Posted On2014-08-25