Incidental Mutation 'R7274:Chrna2'
ID 565478
Institutional Source Beutler Lab
Gene Symbol Chrna2
Ensembl Gene ENSMUSG00000022041
Gene Name cholinergic receptor nicotinic alpha 2 subunit
Synonyms Acra-2, Acra2
MMRRC Submission 067851-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R7274 (G1)
Quality Score 225.009
Status Validated
Chromosome 14
Chromosomal Location 66372488-66390397 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 66386675 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Valine at position 274 (I274V)
Ref Sequence ENSEMBL: ENSMUSP00000022620 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022620] [ENSMUST00000022622] [ENSMUST00000089250] [ENSMUST00000111121] [ENSMUST00000178730] [ENSMUST00000206455]
AlphaFold Q91X60
Predicted Effect probably benign
Transcript: ENSMUST00000022620
AA Change: I274V

PolyPhen 2 Score 0.029 (Sensitivity: 0.95; Specificity: 0.82)
SMART Domains Protein: ENSMUSP00000022620
Gene: ENSMUSG00000022041
AA Change: I274V

DomainStartEndE-ValueType
Pfam:Neur_chan_LBD 36 242 2.2e-81 PFAM
Pfam:Neur_chan_memb 249 503 5e-97 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000022622
SMART Domains Protein: ENSMUSP00000022622
Gene: ENSMUSG00000059456

DomainStartEndE-ValueType
B41 35 265 1.33e-45 SMART
TyrKc 425 679 1.46e-139 SMART
low complexity region 713 726 N/A INTRINSIC
Pfam:Focal_AT 870 1008 1.7e-67 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000089250
SMART Domains Protein: ENSMUSP00000086661
Gene: ENSMUSG00000059456

DomainStartEndE-ValueType
B41 35 265 1.33e-45 SMART
TyrKc 425 679 1.46e-139 SMART
low complexity region 713 726 N/A INTRINSIC
Pfam:Focal_AT 828 966 2e-68 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000111121
SMART Domains Protein: ENSMUSP00000106750
Gene: ENSMUSG00000059456

DomainStartEndE-ValueType
B41 35 265 1.33e-45 SMART
TyrKc 425 679 1.46e-139 SMART
low complexity region 713 726 N/A INTRINSIC
Pfam:Focal_AT 866 1004 1.1e-67 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000154865
SMART Domains Protein: ENSMUSP00000122683
Gene: ENSMUSG00000059456

DomainStartEndE-ValueType
Pfam:Pkinase_Tyr 1 83 8.5e-27 PFAM
low complexity region 117 130 N/A INTRINSIC
Pfam:Focal_AT 243 375 5e-57 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000178730
SMART Domains Protein: ENSMUSP00000137008
Gene: ENSMUSG00000059456

DomainStartEndE-ValueType
B41 35 265 1.33e-45 SMART
TyrKc 425 679 1.46e-139 SMART
low complexity region 713 726 N/A INTRINSIC
Pfam:Focal_AT 870 1002 2.1e-55 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000206455
AA Change: I274V

PolyPhen 2 Score 0.029 (Sensitivity: 0.95; Specificity: 0.82)
Meta Mutation Damage Score 0.0692 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 98.9%
Validation Efficiency 100% (61/61)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels formed by a pentameric arrangement of alpha and beta subunits to create distinct muscle and neuronal receptors. Neuronal receptors are found throughout the peripheral and central nervous system where they are involved in fast synaptic transmission. This gene encodes an alpha subunit that is widely expressed in the brain. The proposed structure for nAChR subunits is a conserved N-terminal extracellular domain followed by three conserved transmembrane domains, a variable cytoplasmic loop, a fourth conserved transmembrane domain, and a short C-terminal extracellular region. Mutations in this gene cause autosomal dominant nocturnal frontal lobe epilepsy type 4. Single nucleotide polymorphisms (SNPs) in this gene have been associated with nicotine dependence. [provided by RefSeq, Nov 2009]
PHENOTYPE: Mice homozygous for a targeted null mutation do not exhibit any significant abnormalities compared to controls. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 60 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1190005I06Rik T C 8: 121,338,005 (GRCm39) S69G possibly damaging Het
Alg12 G A 15: 88,690,910 (GRCm39) S337F probably damaging Het
Bcl11a T C 11: 24,113,985 (GRCm39) S443P probably damaging Het
C1qtnf4 T C 2: 90,719,885 (GRCm39) Y53H probably damaging Het
Cacna1d T A 14: 29,864,600 (GRCm39) E454V probably damaging Het
Cacna1h A G 17: 25,597,811 (GRCm39) F1761S probably damaging Het
Cacna1i A T 15: 80,261,023 (GRCm39) I1344F possibly damaging Het
Cat T C 2: 103,307,235 (GRCm39) N33D probably benign Het
Cdh17 C T 4: 11,783,174 (GRCm39) Q172* probably null Het
Cog2 T G 8: 125,262,258 (GRCm39) S299A possibly damaging Het
Cpa6 C A 1: 10,479,524 (GRCm39) M236I probably damaging Het
Crym T A 7: 119,789,742 (GRCm39) Q242L probably benign Het
Ddx60 T C 8: 62,393,142 (GRCm39) probably null Het
Eif4a3l1 A G 6: 136,306,396 (GRCm39) T286A possibly damaging Het
Epdr1 A T 13: 19,777,458 (GRCm39) I180N possibly damaging Het
Fancd2os G A 6: 113,574,851 (GRCm39) L52F probably benign Het
Fbxo16 C A 14: 65,558,716 (GRCm39) R292S probably benign Het
Fn1 T C 1: 71,667,272 (GRCm39) Q820R probably benign Het
Gm4131 T A 14: 62,704,301 (GRCm39) Y140F possibly damaging Het
Grin2a T C 16: 9,396,986 (GRCm39) R1034G possibly damaging Het
Hypk A G 2: 121,284,805 (GRCm39) probably benign Het
Ighmbp2 A G 19: 3,314,951 (GRCm39) V823A probably benign Het
Irf5 A G 6: 29,534,039 (GRCm39) N95S probably damaging Het
Kdr A T 5: 76,125,360 (GRCm39) M379K probably benign Het
Kif19a G T 11: 114,656,281 (GRCm39) probably benign Het
Klhdc4 T C 8: 122,526,397 (GRCm39) probably null Het
Lama2 A T 10: 26,995,976 (GRCm39) I1717N probably damaging Het
Lama4 A T 10: 38,968,295 (GRCm39) Q1479L probably benign Het
Lgr5 T A 10: 115,288,410 (GRCm39) T745S probably damaging Het
Lifr T A 15: 7,196,540 (GRCm39) probably null Het
Llgl1 C T 11: 60,596,812 (GRCm39) R138C possibly damaging Het
Mccc1 A T 3: 36,044,005 (GRCm39) V246E probably damaging Het
Mdn1 T A 4: 32,725,944 (GRCm39) L2621H probably benign Het
Mecr C A 4: 131,581,089 (GRCm39) A80D probably damaging Het
Mia2 A G 12: 59,154,905 (GRCm39) E206G probably damaging Het
Nubpl A G 12: 52,179,203 (GRCm39) probably benign Het
Obscn C T 11: 59,024,053 (GRCm39) R539H probably damaging Het
Or4n4b T A 14: 50,535,879 (GRCm39) T296S probably benign Het
Or8h10 A G 2: 86,808,867 (GRCm39) V91A probably benign Het
Pde5a A T 3: 122,648,895 (GRCm39) K838* probably null Het
Pgm3 A G 9: 86,444,650 (GRCm39) L295P probably damaging Het
Pkp2 T C 16: 16,064,793 (GRCm39) L439P possibly damaging Het
Polr1a T A 6: 71,897,500 (GRCm39) C205* probably null Het
Rab3gap1 T A 1: 127,855,249 (GRCm39) I429K probably benign Het
Rassf8 T C 6: 145,761,295 (GRCm39) V207A probably benign Het
Sacs T A 14: 61,451,530 (GRCm39) D4525E possibly damaging Het
Sec24a A T 11: 51,598,082 (GRCm39) L864Q probably damaging Het
Spats2l C A 1: 57,918,672 (GRCm39) Y35* probably null Het
Sptlc2 A T 12: 87,388,380 (GRCm39) D367E probably benign Het
Ssc4d T C 5: 135,996,810 (GRCm39) D97G possibly damaging Het
Tjp1 A G 7: 65,177,400 (GRCm39) Y3H possibly damaging Het
Tkt T A 14: 30,291,102 (GRCm39) probably null Het
Trim60 T A 8: 65,453,133 (GRCm39) N372I possibly damaging Het
Trpm2 T C 10: 77,759,389 (GRCm39) N1132D probably benign Het
Tsc22d1 T C 14: 76,654,154 (GRCm39) I211T probably damaging Het
Ttc39b T C 4: 83,180,088 (GRCm39) K132E possibly damaging Het
Ttn C T 2: 76,553,932 (GRCm39) V30924I probably damaging Het
Tubgcp6 G A 15: 88,987,173 (GRCm39) Q1267* probably null Het
Zfp30 C A 7: 29,492,043 (GRCm39) T180N probably benign Het
Zp2 A G 7: 119,731,614 (GRCm39) *714R probably null Het
Other mutations in Chrna2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02738:Chrna2 APN 14 66,386,889 (GRCm39) missense probably benign 0.01
IGL03172:Chrna2 APN 14 66,379,688 (GRCm39) missense probably benign
IGL03268:Chrna2 APN 14 66,388,395 (GRCm39) splice site probably benign
IGL03344:Chrna2 APN 14 66,388,415 (GRCm39) missense probably damaging 0.99
intrepid UTSW 14 66,383,902 (GRCm39) missense probably damaging 1.00
PIT1430001:Chrna2 UTSW 14 66,387,186 (GRCm39) missense probably benign 0.01
R0511:Chrna2 UTSW 14 66,386,553 (GRCm39) missense probably damaging 1.00
R0631:Chrna2 UTSW 14 66,386,757 (GRCm39) missense probably benign 0.45
R1205:Chrna2 UTSW 14 66,380,812 (GRCm39) missense probably benign 0.00
R1485:Chrna2 UTSW 14 66,380,812 (GRCm39) missense probably benign 0.00
R1487:Chrna2 UTSW 14 66,380,812 (GRCm39) missense probably benign 0.00
R1513:Chrna2 UTSW 14 66,380,878 (GRCm39) missense probably benign 0.13
R2023:Chrna2 UTSW 14 66,379,677 (GRCm39) missense probably benign 0.25
R2094:Chrna2 UTSW 14 66,386,912 (GRCm39) missense possibly damaging 0.65
R2964:Chrna2 UTSW 14 66,386,817 (GRCm39) missense possibly damaging 0.82
R2966:Chrna2 UTSW 14 66,386,817 (GRCm39) missense possibly damaging 0.82
R3118:Chrna2 UTSW 14 66,388,442 (GRCm39) missense probably damaging 0.98
R3931:Chrna2 UTSW 14 66,387,216 (GRCm39) missense probably benign 0.26
R3979:Chrna2 UTSW 14 66,386,402 (GRCm39) missense probably damaging 1.00
R3983:Chrna2 UTSW 14 66,386,906 (GRCm39) missense probably benign 0.00
R4080:Chrna2 UTSW 14 66,380,873 (GRCm39) nonsense probably null
R4080:Chrna2 UTSW 14 66,380,866 (GRCm39) missense probably benign 0.12
R4508:Chrna2 UTSW 14 66,383,902 (GRCm39) missense probably damaging 1.00
R4661:Chrna2 UTSW 14 66,386,292 (GRCm39) missense probably damaging 1.00
R4726:Chrna2 UTSW 14 66,386,345 (GRCm39) missense possibly damaging 0.85
R5349:Chrna2 UTSW 14 66,380,956 (GRCm39) missense probably damaging 0.99
R5787:Chrna2 UTSW 14 66,386,457 (GRCm39) missense probably benign 0.16
R6967:Chrna2 UTSW 14 66,388,398 (GRCm39) critical splice acceptor site probably null
R7218:Chrna2 UTSW 14 66,381,320 (GRCm39) splice site probably null
R7565:Chrna2 UTSW 14 66,388,484 (GRCm39) missense probably benign
R7965:Chrna2 UTSW 14 66,388,525 (GRCm39) makesense probably null
R8337:Chrna2 UTSW 14 66,387,017 (GRCm39) nonsense probably null
R8955:Chrna2 UTSW 14 66,379,681 (GRCm39) missense probably benign 0.43
R9017:Chrna2 UTSW 14 66,386,282 (GRCm39) missense probably benign 0.40
Z1176:Chrna2 UTSW 14 66,386,753 (GRCm39) missense probably damaging 1.00
Z1177:Chrna2 UTSW 14 66,388,476 (GRCm39) missense probably null 1.00
Predicted Primers PCR Primer
(F):5'- TGGACCTGAAGGACTACTGG -3'
(R):5'- AACGGTGGTGGACATTGAGC -3'

Sequencing Primer
(F):5'- AGTGGGCCATTATCAACGC -3'
(R):5'- CATTGAGCACGAAGACTGTGATCAC -3'
Posted On 2019-06-26