Incidental Mutation 'R4431:Chrna4'
ID 328596
Institutional Source Beutler Lab
Gene Symbol Chrna4
Ensembl Gene ENSMUSG00000027577
Gene Name cholinergic receptor, nicotinic, alpha polypeptide 4
Synonyms a4 nicotinic receptor, Acra-4, alpha4-nAChR, Acra4, alpha4 nAChR
MMRRC Submission 041146-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.172) question?
Stock # R4431 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 180664104-180685339 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 180670413 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 448 (S448P)
Ref Sequence ENSEMBL: ENSMUSP00000104479 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000067120] [ENSMUST00000108851]
AlphaFold O70174
Predicted Effect probably damaging
Transcript: ENSMUST00000067120
AA Change: S448P

PolyPhen 2 Score 0.984 (Sensitivity: 0.74; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000066338
Gene: ENSMUSG00000027577
AA Change: S448P

DomainStartEndE-ValueType
signal peptide 1 30 N/A INTRINSIC
Pfam:Neur_chan_LBD 39 245 1.4e-76 PFAM
Pfam:Neur_chan_memb 252 620 1.9e-107 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000108851
AA Change: S448P

PolyPhen 2 Score 0.991 (Sensitivity: 0.71; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000104479
Gene: ENSMUSG00000027577
AA Change: S448P

DomainStartEndE-ValueType
signal peptide 1 30 N/A INTRINSIC
Pfam:Neur_chan_LBD 39 245 8.4e-79 PFAM
Pfam:Neur_chan_memb 252 620 3.3e-112 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000135766
SMART Domains Protein: ENSMUSP00000125724
Gene: ENSMUSG00000027577

DomainStartEndE-ValueType
signal peptide 1 30 N/A INTRINSIC
Pfam:Neur_chan_LBD 39 130 9.2e-37 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000198922
Meta Mutation Damage Score 0.1237 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.3%
Validation Efficiency 100% (52/52)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a nicotinic acetylcholine receptor, which belongs to a superfamily of ligand-gated ion channels that play a role in fast signal transmission at synapses. These pentameric receptors can bind acetylcholine, which causes an extensive change in conformation that leads to the opening of an ion-conducting channel across the plasma membrane. This protein is an integral membrane receptor subunit that can interact with either nAChR beta-2 or nAChR beta-4 to form a functional receptor. Mutations in this gene cause nocturnal frontal lobe epilepsy type 1. Polymorphisms in this gene that provide protection against nicotine addiction have been described. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]
PHENOTYPE: Nullizygous mice may show reduced chemically-elicited analgesia, susceptibility to seizures, increased anxiety, and altered behavioral responses to nicotine or a new environment. Homozygotes for any of several knock-in alleles exhibit altered nervous system physiology and/or sensitivity to nicotine. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 50 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
0610040J01Rik G T 5: 64,056,182 (GRCm39) probably benign Het
2510039O18Rik T C 4: 148,026,022 (GRCm39) S181P probably benign Het
4930522L14Rik A T 5: 109,884,440 (GRCm39) C473S possibly damaging Het
4930523C07Rik A T 1: 159,872,149 (GRCm39) noncoding transcript Het
Aak1 A G 6: 86,963,300 (GRCm39) K910R unknown Het
Abca2 A G 2: 25,332,864 (GRCm39) D1521G probably benign Het
Adamts20 C A 15: 94,241,924 (GRCm39) D695Y probably damaging Het
Bag4 C T 8: 26,259,516 (GRCm39) A228T probably benign Het
Bltp3a A G 17: 28,104,905 (GRCm39) N533S probably damaging Het
Bspry T A 4: 62,400,904 (GRCm39) I132N possibly damaging Het
Cfap300 A G 9: 8,027,178 (GRCm39) V120A probably damaging Het
Cfh T C 1: 140,064,004 (GRCm39) Y424C probably damaging Het
Chd2 T C 7: 73,085,709 (GRCm39) R1642G possibly damaging Het
Chrm2 A G 6: 36,501,097 (GRCm39) D318G probably benign Het
Cldn8 A C 16: 88,359,619 (GRCm39) M102R probably damaging Het
Dock8 T C 19: 25,042,754 (GRCm39) V112A probably benign Het
Fbxo42 C A 4: 140,927,861 (GRCm39) R714S probably damaging Het
Fmo1 G A 1: 162,661,281 (GRCm39) A334V possibly damaging Het
Gpr68 A T 12: 100,865,650 (GRCm39) probably benign Het
Gramd4 A G 15: 86,014,361 (GRCm39) K345R probably damaging Het
Gtpbp1 T G 15: 79,600,398 (GRCm39) S444A probably damaging Het
Ints12 T C 3: 132,808,242 (GRCm39) Y207H probably damaging Het
Kat2b-ps A T 5: 93,540,443 (GRCm39) noncoding transcript Het
Klhl25 T A 7: 75,515,162 (GRCm39) F23I probably damaging Het
Lamc1 A G 1: 153,097,274 (GRCm39) I1590T probably damaging Het
Lhfpl4 A G 6: 113,170,805 (GRCm39) I127T possibly damaging Het
Lrrc71 A G 3: 87,650,143 (GRCm39) S286P possibly damaging Het
Man1c1 A T 4: 134,430,329 (GRCm39) V151D probably damaging Het
Mipol1 G A 12: 57,350,310 (GRCm39) R36Q possibly damaging Het
Nuggc T A 14: 65,848,659 (GRCm39) W187R probably benign Het
Or4a71 A G 2: 89,357,987 (GRCm39) Y256H probably damaging Het
Pkhd1 G A 1: 20,593,538 (GRCm39) T1525I probably damaging Het
Pomp A G 5: 147,812,289 (GRCm39) E125G probably damaging Het
Ptar1 G T 19: 23,671,695 (GRCm39) G33C probably damaging Het
Ptpn3 A G 4: 57,235,355 (GRCm39) S335P probably damaging Het
Pus7 A G 5: 23,951,487 (GRCm39) Y521H probably benign Het
Shank1 C T 7: 43,969,076 (GRCm39) R324* probably null Het
Slc12a3 A T 8: 95,069,713 (GRCm39) I541F probably damaging Het
Slc12a9 G A 5: 137,319,775 (GRCm39) P580L probably benign Het
Spz1 A G 13: 92,711,837 (GRCm39) L213P probably damaging Het
Strn A G 17: 79,043,891 (GRCm39) V9A probably damaging Het
Sytl5 A T X: 9,826,262 (GRCm39) N412Y probably damaging Het
Tert T A 13: 73,775,594 (GRCm39) F115Y probably damaging Het
Tmem67 T A 4: 12,051,473 (GRCm39) N785I possibly damaging Het
Trf T C 9: 103,089,075 (GRCm39) N243S possibly damaging Het
Ttc3 T C 16: 94,211,817 (GRCm39) probably null Het
Vmn2r22 T C 6: 123,614,817 (GRCm39) T258A possibly damaging Het
Vps13b A C 15: 35,770,899 (GRCm39) Q2114P probably damaging Het
Wdfy1 T A 1: 79,691,583 (GRCm39) R275* probably null Het
Wnt2b A G 3: 104,860,256 (GRCm39) L217S probably damaging Het
Other mutations in Chrna4
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00815:Chrna4 APN 2 180,671,184 (GRCm39) missense probably benign 0.09
IGL00914:Chrna4 APN 2 180,670,824 (GRCm39) missense probably damaging 1.00
IGL01511:Chrna4 APN 2 180,670,461 (GRCm39) missense probably benign 0.13
IGL02517:Chrna4 APN 2 180,670,926 (GRCm39) missense probably benign 0.01
IGL02715:Chrna4 APN 2 180,671,374 (GRCm39) unclassified probably benign
R1168:Chrna4 UTSW 2 180,675,931 (GRCm39) missense possibly damaging 0.61
R1475:Chrna4 UTSW 2 180,671,172 (GRCm39) missense probably benign 0.44
R1572:Chrna4 UTSW 2 180,671,100 (GRCm39) missense possibly damaging 0.95
R4428:Chrna4 UTSW 2 180,670,413 (GRCm39) missense probably damaging 0.99
R4429:Chrna4 UTSW 2 180,670,413 (GRCm39) missense probably damaging 0.99
R4494:Chrna4 UTSW 2 180,670,281 (GRCm39) missense probably damaging 0.98
R4664:Chrna4 UTSW 2 180,679,286 (GRCm39) missense probably damaging 1.00
R4666:Chrna4 UTSW 2 180,679,286 (GRCm39) missense probably damaging 1.00
R4931:Chrna4 UTSW 2 180,670,665 (GRCm39) missense probably benign 0.00
R5144:Chrna4 UTSW 2 180,666,623 (GRCm39) missense probably damaging 1.00
R5556:Chrna4 UTSW 2 180,675,773 (GRCm39) missense possibly damaging 0.94
R5633:Chrna4 UTSW 2 180,671,253 (GRCm39) missense probably damaging 1.00
R5889:Chrna4 UTSW 2 180,670,451 (GRCm39) missense probably damaging 1.00
R6056:Chrna4 UTSW 2 180,671,235 (GRCm39) missense probably damaging 1.00
R6120:Chrna4 UTSW 2 180,666,599 (GRCm39) missense probably damaging 1.00
R7030:Chrna4 UTSW 2 180,671,334 (GRCm39) missense probably damaging 1.00
R7352:Chrna4 UTSW 2 180,679,267 (GRCm39) missense probably damaging 0.97
R7694:Chrna4 UTSW 2 180,660,386 (GRCm39) missense
R7945:Chrna4 UTSW 2 180,670,454 (GRCm39) missense probably benign 0.04
R8075:Chrna4 UTSW 2 180,680,859 (GRCm39) missense unknown
R8706:Chrna4 UTSW 2 180,679,307 (GRCm39) missense probably damaging 1.00
R9091:Chrna4 UTSW 2 180,670,643 (GRCm39) missense possibly damaging 0.79
R9138:Chrna4 UTSW 2 180,670,775 (GRCm39) missense probably damaging 0.97
R9154:Chrna4 UTSW 2 180,670,602 (GRCm39) missense probably damaging 0.99
R9270:Chrna4 UTSW 2 180,670,643 (GRCm39) missense possibly damaging 0.79
R9598:Chrna4 UTSW 2 180,679,264 (GRCm39) missense probably damaging 1.00
Z1177:Chrna4 UTSW 2 180,670,078 (GRCm39) missense possibly damaging 0.80
Z1177:Chrna4 UTSW 2 180,666,606 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- AGGGAAGCAGCTCCATCTTG -3'
(R):5'- CCGGAGACTTATCGAATCCATG -3'

Sequencing Primer
(F):5'- TCCATCTTGGGAAACACAGTACTGG -3'
(R):5'- CTTATCGAATCCATGCACAAGATGG -3'
Posted On 2015-07-21