Incidental Mutation 'R0034:Chrna7'
ID18610
Institutional Source Beutler Lab
Gene Symbol Chrna7
Ensembl Gene ENSMUSG00000030525
Gene Namecholinergic receptor, nicotinic, alpha polypeptide 7
Synonymsalpha7-nAChR, alpha7, Acra7, alpha7 nicotinic receptor
MMRRC Submission 038328-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R0034 (G1)
Quality Score
Status Validated
Chromosome7
Chromosomal Location63098692-63212569 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to G at 63148606 bp
ZygosityHeterozygous
Amino Acid Change Lysine to Asparagine at position 109 (K109N)
Ref Sequence ENSEMBL: ENSMUSP00000032738 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000032738]
Predicted Effect possibly damaging
Transcript: ENSMUST00000032738
AA Change: K109N

PolyPhen 2 Score 0.792 (Sensitivity: 0.85; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000032738
Gene: ENSMUSG00000030525
AA Change: K109N

DomainStartEndE-ValueType
low complexity region 10 17 N/A INTRINSIC
Pfam:Neur_chan_LBD 26 230 1e-75 PFAM
Pfam:Neur_chan_memb 237 487 3.6e-63 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000208304
Meta Mutation Damage Score 0.3244 question?
Coding Region Coverage
  • 1x: 76.6%
  • 3x: 64.3%
  • 10x: 35.1%
  • 20x: 16.8%
Validation Efficiency 87% (59/68)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The nicotinic acetylcholine receptors (nAChRs) are members of a superfamily of ligand-gated ion channels that mediate fast signal transmission at synapses. The nAChRs are thought to be hetero-pentamers composed of homologous subunits. The proposed structure for each subunit 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. The protein encoded by this gene forms a homo-oligomeric channel, displays marked permeability to calcium ions and is a major component of brain nicotinic receptors that are blocked by, and highly sensitive to, alpha-bungarotoxin. Once this receptor binds acetylcholine, it undergoes an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane. This gene is located in a region identified as a major susceptibility locus for juvenile myoclonic epilepsy and a chromosomal location involved in the genetic transmission of schizophrenia. An evolutionarily recent partial duplication event in this region results in a hybrid containing sequence from this gene and a novel FAM7A gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]
PHENOTYPE: Nullizygous mice lack hippocampal fast nicotinic currents but show nicotine-induced seizures as well as altered anxiety behavior, fertility defects, airway basal cell hyperplasia. and higher TNF sythesis when endotoxemic. Newborns homozygous for a knock-in allele die with increased neuron apoptosis. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 22 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930402H24Rik T C 2: 130,736,572 H664R probably damaging Het
Asns G A 6: 7,676,299 P419L probably damaging Het
Cep152 C T 2: 125,583,893 A851T probably benign Het
Farp1 A G 14: 121,255,429 H481R probably benign Het
Kif9 G A 9: 110,519,611 C738Y probably benign Het
Klf12 A G 14: 99,987,429 probably null Het
Ltbp1 T A 17: 75,047,568 probably benign Het
Map2k4 A G 11: 65,719,611 probably benign Het
Nat8f5 C A 6: 85,817,886 A31S probably benign Het
Plb1 G T 5: 32,273,113 G138V probably benign Het
Plcz1 A T 6: 140,020,448 probably benign Het
Poln A C 5: 34,115,418 V398G possibly damaging Het
Ppp2r2c A G 5: 36,927,539 I115V probably benign Het
Rapgef1 C A 2: 29,724,768 probably benign Het
Rbm43 A T 2: 51,925,710 D166E probably benign Het
Sgk3 T C 1: 9,885,677 V301A probably damaging Het
Trap1 A T 16: 4,069,030 probably benign Het
Trim14 A G 4: 46,523,627 L137P probably damaging Het
Tsku T C 7: 98,352,663 T154A possibly damaging Het
Usp50 T C 2: 126,777,975 E139G possibly damaging Het
Zfp949 A T 9: 88,567,640 probably benign Het
Zscan20 T C 4: 128,585,662 N1012S probably damaging Het
Other mutations in Chrna7
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01776:Chrna7 APN 7 63099519 missense probably benign 0.01
IGL01999:Chrna7 APN 7 63103791 missense probably damaging 1.00
IGL02016:Chrna7 APN 7 63103835 missense probably damaging 1.00
IGL02388:Chrna7 APN 7 63107691 missense probably damaging 1.00
IGL02400:Chrna7 APN 7 63099322 missense probably damaging 1.00
IGL02458:Chrna7 APN 7 63106094 missense probably damaging 1.00
IGL03039:Chrna7 APN 7 63148592 missense probably damaging 1.00
inflation UTSW 7 63148601 missense probably damaging 1.00
thaler UTSW 7 63106027 missense probably damaging 1.00
R0631:Chrna7 UTSW 7 63099643 missense probably benign 0.00
R1666:Chrna7 UTSW 7 63212142 missense possibly damaging 0.70
R1703:Chrna7 UTSW 7 63099507 missense probably damaging 0.99
R1763:Chrna7 UTSW 7 63099252 missense probably benign 0.05
R1974:Chrna7 UTSW 7 63099286 missense probably damaging 1.00
R2294:Chrna7 UTSW 7 63110424 missense probably benign 0.11
R2393:Chrna7 UTSW 7 63099246 missense probably damaging 1.00
R4598:Chrna7 UTSW 7 63103790 missense probably damaging 1.00
R4599:Chrna7 UTSW 7 63103790 missense probably damaging 1.00
R4842:Chrna7 UTSW 7 63212448 missense probably benign 0.05
R5143:Chrna7 UTSW 7 63106147 missense probably damaging 1.00
R5310:Chrna7 UTSW 7 63106057 missense probably damaging 1.00
R5339:Chrna7 UTSW 7 63099307 missense probably damaging 1.00
R5516:Chrna7 UTSW 7 63099298 missense probably damaging 0.98
R5807:Chrna7 UTSW 7 63148601 missense probably damaging 1.00
R6501:Chrna7 UTSW 7 63106115 missense probably damaging 1.00
R6918:Chrna7 UTSW 7 63159551 missense probably benign 0.03
R7000:Chrna7 UTSW 7 63106039 missense probably damaging 1.00
R7189:Chrna7 UTSW 7 63106027 missense probably damaging 1.00
R7483:Chrna7 UTSW 7 63104990 missense probably damaging 1.00
R7953:Chrna7 UTSW 7 63103793 missense possibly damaging 0.82
R7955:Chrna7 UTSW 7 63103793 missense possibly damaging 0.82
R7956:Chrna7 UTSW 7 63103793 missense possibly damaging 0.82
R8235:Chrna7 UTSW 7 63212224 missense probably damaging 1.00
Z1176:Chrna7 UTSW 7 63212184 missense probably damaging 1.00
Z1177:Chrna7 UTSW 7 63107551 critical splice donor site probably null
Posted On2013-03-25