Incidental Mutation 'R5349:Chrna2'
ID 500968
Institutional Source Beutler Lab
Gene Symbol Chrna2
Ensembl Gene ENSMUSG00000022041
Gene Name cholinergic receptor nicotinic alpha 2 subunit
Synonyms Acra-2, Acra2
MMRRC Submission 042928-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R5349 (G1)
Quality Score 225
Status Not validated
Chromosome 14
Chromosomal Location 66372488-66390397 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 66380956 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 75 (V75A)
Ref Sequence ENSEMBL: ENSMUSP00000145896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022620] [ENSMUST00000206455]
AlphaFold Q91X60
Predicted Effect probably damaging
Transcript: ENSMUST00000022620
AA Change: V75A

PolyPhen 2 Score 0.988 (Sensitivity: 0.73; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000022620
Gene: ENSMUSG00000022041
AA Change: V75A

DomainStartEndE-ValueType
Pfam:Neur_chan_LBD 36 242 2.2e-81 PFAM
Pfam:Neur_chan_memb 249 503 5e-97 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000206455
AA Change: V75A

PolyPhen 2 Score 0.988 (Sensitivity: 0.73; Specificity: 0.96)
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.7%
  • 10x: 97.3%
  • 20x: 95.2%
Validation Efficiency
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: 26 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Actn3 T C 19: 4,917,986 (GRCm39) E327G possibly damaging Het
Cd209d T G 8: 3,928,320 (GRCm39) M22L probably benign Het
Cnst A G 1: 179,450,462 (GRCm39) E642G possibly damaging Het
Diaph1 A G 18: 38,024,125 (GRCm39) V571A unknown Het
Dip2c C A 13: 9,672,689 (GRCm39) H1032N probably damaging Het
Eif4a3l1 A T 6: 136,306,694 (GRCm39) D385V probably damaging Het
Fbxl3 T C 14: 103,333,012 (GRCm39) probably benign Het
Glb1 T C 9: 114,263,529 (GRCm39) probably null Het
Gm8220 T C 14: 44,525,634 (GRCm39) I101T probably benign Het
Grin2b A G 6: 136,021,281 (GRCm39) C7R possibly damaging Het
Myo15a T C 11: 60,384,409 (GRCm39) I516T probably damaging Het
Nr1i3 A G 1: 171,042,641 (GRCm39) D89G possibly damaging Het
Ogfod1 T G 8: 94,781,876 (GRCm39) probably benign Het
Or4k2 G T 14: 50,424,230 (GRCm39) S148* probably null Het
Pard3 G T 8: 128,142,224 (GRCm39) D930Y probably damaging Het
Pde7b C T 10: 20,494,932 (GRCm39) C9Y probably damaging Het
Pilra T A 5: 137,829,488 (GRCm39) D192V probably damaging Het
Ptprj A G 2: 90,301,605 (GRCm39) S176P probably benign Het
Slc4a2 T C 5: 24,640,633 (GRCm39) V685A possibly damaging Het
Srxn1 G A 2: 151,947,799 (GRCm39) V66M probably damaging Het
Stox2 A G 8: 47,740,951 (GRCm39) F44L possibly damaging Het
Tlr11 T C 14: 50,598,337 (GRCm39) F108L probably benign Het
Ttn T A 2: 76,585,168 (GRCm39) I22042F probably damaging Het
Ttn A C 2: 76,638,450 (GRCm39) I13943M probably damaging Het
Wdfy4 T C 14: 32,710,856 (GRCm39) D2577G probably damaging Het
Zyg11a A T 4: 108,040,929 (GRCm39) F675I probably damaging 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
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
R7274:Chrna2 UTSW 14 66,386,675 (GRCm39) missense probably benign 0.03
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'- GGAGTGCTGCCCATTTGATG -3'
(R):5'- ACACAACAAGGTAGCTGCATG -3'

Sequencing Primer
(F):5'- TGACTTCATGCAGACTCACTC -3'
(R):5'- GCTGCATGCTGTGTCCAG -3'
Posted On 2017-12-01