Incidental Mutation 'R4273:Kcna2'
ID 322253
Institutional Source Beutler Lab
Gene Symbol Kcna2
Ensembl Gene ENSMUSG00000040724
Gene Name potassium voltage-gated channel, shaker-related subfamily, member 2
Synonyms Mk-2, Akr6a4, Kca1-2, Kv1.2
MMRRC Submission 041645-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4273 (G1)
Quality Score 225
Status Not validated
Chromosome 3
Chromosomal Location 107101146-107115005 bp(+) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) T to A at 107105193 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Aspartic acid to Glutamic Acid at position 363 (D363E)
Ref Sequence ENSEMBL: ENSMUSP00000143798 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000038695] [ENSMUST00000196403] [ENSMUST00000197470]
AlphaFold P63141
Predicted Effect probably benign
Transcript: ENSMUST00000038695
AA Change: D363E

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000041702
Gene: ENSMUSG00000040724
AA Change: D363E

DomainStartEndE-ValueType
BTB 33 133 1.2e-9 SMART
Pfam:Ion_trans 162 421 6.2e-53 PFAM
Pfam:Ion_trans_2 329 414 4.9e-16 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000196403
AA Change: D363E

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000142873
Gene: ENSMUSG00000040724
AA Change: D363E

DomainStartEndE-ValueType
BTB 33 133 1.2e-9 SMART
low complexity region 164 179 N/A INTRINSIC
Pfam:Ion_trans 224 409 1.3e-36 PFAM
Pfam:Ion_trans_2 329 414 7.9e-16 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000197470
AA Change: D363E

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000143798
Gene: ENSMUSG00000040724
AA Change: D363E

DomainStartEndE-ValueType
BTB 33 133 1.2e-9 SMART
Pfam:Ion_trans 162 421 6.2e-53 PFAM
Pfam:Ion_trans_2 329 414 4.9e-16 PFAM
Coding Region Coverage
  • 1x: 99.4%
  • 3x: 98.8%
  • 10x: 97.7%
  • 20x: 96.1%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Potassium channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member contains six membrane-spanning domains with a shaker-type repeat in the fourth segment. It belongs to the delayed rectifier class, members of which allow nerve cells to efficiently repolarize following an action potential. The coding region of this gene is intronless, and the gene is clustered with genes KCNA3 and KCNA10 on chromosome 1. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for a null allele exhibit postnatal lethality, increased susceptibility to spontaneous and chemically-induced seizures and altered neuron electrophysiology. Mice homozygous for an ENU-induced allele exhibit abnormal gait, impaired coordination, and premature lethality. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 65 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acer2 T A 4: 86,874,598 probably null Het
Adgrf2 T A 17: 42,710,122 T604S probably damaging Het
Akap8l T A 17: 32,321,931 K533* probably null Het
Appbp2 T C 11: 85,234,676 Y45C probably damaging Het
Arap2 T C 5: 62,670,979 I950V possibly damaging Het
Arhgap31 T C 16: 38,602,335 E1123G possibly damaging Het
Atp2c1 G T 9: 105,435,140 N493K probably benign Het
Bcr T C 10: 75,125,111 I458T probably damaging Het
Brd4 G A 17: 32,214,782 T468I probably benign Het
Cdh23 T A 10: 60,311,161 D2774V possibly damaging Het
Cfdp1 T C 8: 111,768,785 Y267C probably damaging Het
Chd6 C A 2: 160,961,291 A2156S probably benign Het
Dazap2 C A 15: 100,618,090 P100T probably damaging Het
Disp1 T A 1: 183,087,644 I1071F possibly damaging Het
Dlgap1 T A 17: 70,766,043 S686T probably benign Het
Dst C T 1: 34,192,340 R3183C possibly damaging Het
Enpp4 T C 17: 44,101,807 N279D probably benign Het
Exoc3l T C 8: 105,289,961 *740W probably null Het
Exoc5 A T 14: 49,015,480 C625* probably null Het
Fam98b A T 2: 117,260,231 N137Y possibly damaging Het
Fat4 T A 3: 38,891,627 D1556E probably damaging Het
Fcer2a C A 8: 3,682,848 V319L possibly damaging Het
Fer1l6 T C 15: 58,627,522 V1247A probably benign Het
Fmo4 A G 1: 162,805,179 V201A probably damaging Het
Fras1 G A 5: 96,614,904 G755D probably benign Het
Gm13078 A T 4: 143,726,846 K175* probably null Het
Grid2 T C 6: 63,909,045 Y142H probably damaging Het
Hspg2 C T 4: 137,518,940 R1010C probably damaging Het
Ibtk T C 9: 85,726,731 Q376R probably damaging Het
Impdh2 T C 9: 108,564,956 M414T probably damaging Het
Itm2c A G 1: 85,907,029 T160A probably damaging Het
Lama2 C T 10: 27,347,054 C412Y probably damaging Het
Lims2 C G 18: 31,956,337 T151S probably benign Het
Mier1 T C 4: 103,162,431 S423P possibly damaging Het
Mrgpra3 A T 7: 47,589,432 W249R probably benign Het
Mtor A G 4: 148,550,152 H2410R probably benign Het
Mvp C T 7: 126,989,703 A631T probably benign Het
Nepro T C 16: 44,735,829 V450A possibly damaging Het
Ngrn T C 7: 80,264,521 V140A probably damaging Het
Nobox T C 6: 43,306,008 E231G probably benign Het
Olfr129 A T 17: 38,055,272 I98N probably damaging Het
P3h2 T A 16: 26,105,221 I155F probably benign Het
Pcdha3 C T 18: 36,948,091 R629C probably damaging Het
Riok3 AGAAGCGG AG 18: 12,135,941 probably benign Het
Rttn T C 18: 89,091,896 I1675T probably benign Het
Sall2 C A 14: 52,313,803 R643L probably damaging Het
Slc35f4 G T 14: 49,304,301 T182N possibly damaging Het
Slc52a3 T A 2: 152,005,740 I256N possibly damaging Het
Sox9 T C 11: 112,785,154 S390P possibly damaging Het
Tango2 T C 16: 18,302,790 probably benign Het
Tas1r1 T C 4: 152,032,157 E340G possibly damaging Het
Tek G A 4: 94,829,970 G524R probably damaging Het
Tmem260 A T 14: 48,505,304 Y532F probably benign Het
Tsks C A 7: 44,957,929 L559I probably damaging Het
Unc79 C A 12: 103,122,353 L1702I probably damaging Het
Vmn1r14 T A 6: 57,234,148 I237N probably damaging Het
Vmn2r17 G A 5: 109,452,966 C710Y probably benign Het
Zfp119b G T 17: 55,938,926 T420K possibly damaging Het
Zfp202 C T 9: 40,207,494 R68* probably null Het
Zfp229 T A 17: 21,746,821 S677R probably benign Het
Zfp462 C T 4: 55,008,411 H126Y probably benign Het
Zfp52 C A 17: 21,560,197 Y102* probably null Het
Zfp616 T A 11: 74,083,700 M265K probably benign Het
Zfyve9 A T 4: 108,680,976 I1031N probably damaging Het
Zmynd11 T C 13: 9,697,690 Y203C probably damaging Het
Other mutations in Kcna2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00164:Kcna2 APN 3 107104630 missense probably damaging 1.00
IGL00711:Kcna2 APN 3 107104753 missense probably benign
IGL02380:Kcna2 APN 3 107104958 missense probably benign 0.00
grim UTSW 3 107105027 missense probably damaging 1.00
IGL03097:Kcna2 UTSW 3 107105399 missense probably benign 0.02
R0117:Kcna2 UTSW 3 107105354 missense probably damaging 1.00
R0200:Kcna2 UTSW 3 107105160 missense probably benign
R0463:Kcna2 UTSW 3 107105160 missense probably benign
R0472:Kcna2 UTSW 3 107105516 missense probably benign
R0662:Kcna2 UTSW 3 107105401 missense probably benign
R0746:Kcna2 UTSW 3 107105168 missense probably benign
R1838:Kcna2 UTSW 3 107104512 missense probably benign
R1847:Kcna2 UTSW 3 107105113 missense possibly damaging 0.54
R1912:Kcna2 UTSW 3 107105401 missense probably benign
R1966:Kcna2 UTSW 3 107104630 missense probably damaging 1.00
R1971:Kcna2 UTSW 3 107104824 missense probably damaging 1.00
R2419:Kcna2 UTSW 3 107104153 missense probably benign 0.21
R3796:Kcna2 UTSW 3 107105590 missense probably benign 0.37
R3830:Kcna2 UTSW 3 107104796 missense probably benign 0.04
R4570:Kcna2 UTSW 3 107104795 missense probably benign
R4662:Kcna2 UTSW 3 107105417 missense probably benign
R4756:Kcna2 UTSW 3 107105417 missense probably benign
R5054:Kcna2 UTSW 3 107104340 missense probably damaging 1.00
R5069:Kcna2 UTSW 3 107104637 missense probably damaging 1.00
R5070:Kcna2 UTSW 3 107104637 missense probably damaging 1.00
R5126:Kcna2 UTSW 3 107104234 missense probably damaging 1.00
R5146:Kcna2 UTSW 3 107105498 missense probably benign 0.00
R5205:Kcna2 UTSW 3 107097146 unclassified probably benign
R5472:Kcna2 UTSW 3 107105309 missense possibly damaging 0.93
R6687:Kcna2 UTSW 3 107105027 missense probably damaging 1.00
R6689:Kcna2 UTSW 3 107105027 missense probably damaging 1.00
R7216:Kcna2 UTSW 3 107104793 missense probably damaging 0.99
R7304:Kcna2 UTSW 3 107104750 missense probably benign
R7538:Kcna2 UTSW 3 107104568 missense probably benign 0.31
R7585:Kcna2 UTSW 3 107105342 missense probably damaging 1.00
R7968:Kcna2 UTSW 3 107105144 missense possibly damaging 0.79
R8241:Kcna2 UTSW 3 107105022 missense probably damaging 1.00
R9223:Kcna2 UTSW 3 107104990 missense possibly damaging 0.93
R9441:Kcna2 UTSW 3 107104952 missense probably benign
R9449:Kcna2 UTSW 3 107105571 nonsense probably null
Predicted Primers PCR Primer
(F):5'- AAGTTGTCCAGACACTCCAAAGG -3'
(R):5'- CGGGATCTTTGGACAGCTTG -3'

Sequencing Primer
(F):5'- GGTCTACAGATTCTAGGTCAGACC -3'
(R):5'- GACAGCTTGTCACTTGCAAG -3'
Posted On 2015-06-20