Incidental Mutation 'R2891:Kcnj3'
ID 260090
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 040479-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R2891 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 55325982-55488157 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 55337027 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Phenylalanine at position 298 (I298F)
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: I298F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000063329
Gene: ENSMUSG00000026824
AA Change: I298F

DomainStartEndE-ValueType
low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 385 3.6e-164 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000112632
SMART Domains Protein: ENSMUSP00000108251
Gene: ENSMUSG00000026824

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: I298F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000108252
Gene: ENSMUSG00000026824
AA Change: I298F

DomainStartEndE-ValueType
low complexity region 18 37 N/A INTRINSIC
Pfam:IRK 47 369 1.1e-141 PFAM
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 94.9%
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: 19 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgrl3 T C 5: 81,841,366 (GRCm39) Y816H probably damaging Het
Clcn6 C T 4: 148,097,073 (GRCm39) probably null Het
Farp1 C T 14: 121,494,148 (GRCm39) A543V probably damaging Het
Hhat T C 1: 192,277,394 (GRCm39) Y355C probably damaging Het
Ireb2 A T 9: 54,807,274 (GRCm39) H612L probably benign Het
Kdr A G 5: 76,107,496 (GRCm39) F1016L probably damaging Het
Klf7 T C 1: 64,081,521 (GRCm39) Y269C probably damaging Het
Klhl9 T C 4: 88,639,207 (GRCm39) I345V probably benign Het
Miga2 A T 2: 30,268,306 (GRCm39) probably null Het
Nadk A G 4: 155,671,817 (GRCm39) N232S possibly damaging Het
Ncoa6 T A 2: 155,279,881 (GRCm39) D45V possibly damaging Het
Pcnx2 A G 8: 126,617,797 (GRCm39) S153P probably damaging Het
Per2 C A 1: 91,373,325 (GRCm39) Q154H probably damaging Het
Pik3ap1 G A 19: 41,364,500 (GRCm39) A73V probably benign Het
Plod3 G C 5: 137,017,000 (GRCm39) A50P probably benign Het
Rapsn A T 2: 90,867,169 (GRCm39) D157V probably damaging Het
Shprh T G 10: 11,040,100 (GRCm39) S4R probably damaging Het
Taar8a G A 10: 23,953,028 (GRCm39) V211I probably benign Het
Vpreb3 C T 10: 75,779,056 (GRCm39) 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
R1899:Kcnj3 UTSW 2 55,327,256 (GRCm39) missense probably damaging 1.00
R1966:Kcnj3 UTSW 2 55,327,343 (GRCm39) missense probably damaging 0.99
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'- ACCTGAGGGTGAGTTCCTTC -3'
(R):5'- GAACTCAGGCTGATCACAAAATGC -3'

Sequencing Primer
(F):5'- CCCCTTGACCAACTTGAACTGG -3'
(R):5'- GGCTGATCACAAAATGCCCTAATG -3'
Posted On 2015-01-23