Incidental Mutation 'R1168:Chrna4'
ID 101260
Institutional Source Beutler Lab
Gene Symbol Chrna4
Ensembl Gene ENSMUSG00000027577
Gene Name cholinergic receptor, nicotinic, alpha polypeptide 4
Synonyms alpha4 nAChR, Acra-4, a4 nicotinic receptor, Acra4, alpha4-nAChR
MMRRC Submission 039241-MU
Accession Numbers
Is this an essential gene? Probably non essential (E-score: 0.158) question?
Stock # R1168 (G1)
Quality Score 186
Status Not validated
Chromosome 2
Chromosomal Location 181018380-181043546 bp(-) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) T to A at 181034138 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Methionine to Leucine at position 67 (M67L)
Ref Sequence ENSEMBL: ENSMUSP00000123043 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000067120] [ENSMUST00000108851] [ENSMUST00000124400]
AlphaFold O70174
Predicted Effect probably benign
Transcript: ENSMUST00000067120
AA Change: M84L

PolyPhen 2 Score 0.435 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000066338
Gene: ENSMUSG00000027577
AA Change: M84L

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 benign
Transcript: ENSMUST00000108851
AA Change: M84L

PolyPhen 2 Score 0.435 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000104479
Gene: ENSMUSG00000027577
AA Change: M84L

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 possibly damaging
Transcript: ENSMUST00000124400
AA Change: M67L

PolyPhen 2 Score 0.606 (Sensitivity: 0.87; Specificity: 0.91)
SMART Domains Protein: ENSMUSP00000123043
Gene: ENSMUSG00000027577
AA Change: M67L

DomainStartEndE-ValueType
Pfam:Neur_chan_LBD 22 78 3.6e-19 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
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.1%
  • 10x: 95.2%
  • 20x: 88.8%
Validation Efficiency
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: 80 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1110002E22Rik T C 3: 138,067,900 V950A probably benign Het
4930452B06Rik T C 14: 8,442,939 N610S probably benign Het
Adgrb3 A T 1: 25,826,199 S188T probably benign Het
Ahr A T 12: 35,504,532 N529K possibly damaging Het
Akr1c21 A G 13: 4,583,837 N302D probably benign Het
Aldh8a1 T A 10: 21,384,631 probably null Het
Alpk3 A T 7: 81,103,357 K1554M probably damaging Het
Arhgef5 T A 6: 43,273,396 H360Q probably benign Het
Cacna1a A G 8: 84,579,501 I1293V probably damaging Het
Cacna2d4 C T 6: 119,307,286 R745W probably damaging Het
Cd200r4 T A 16: 44,832,944 W72R probably damaging Het
Ces2e A T 8: 104,927,014 D28V possibly damaging Het
Cfap45 T C 1: 172,545,697 Y534H probably damaging Het
Cfap54 A T 10: 92,937,920 C87S probably damaging Het
Chmp7 C T 14: 69,719,450 M336I probably benign Het
Cts7 T A 13: 61,353,817 N290Y probably damaging Het
Enpp6 A T 8: 47,030,454 M94L probably damaging Het
Fam83d C T 2: 158,768,523 A137V probably benign Het
Foxd2 C T 4: 114,907,678 A382T possibly damaging Het
Galnt11 T G 5: 25,250,246 S193R probably damaging Het
Gapvd1 A T 2: 34,704,469 D856E probably damaging Het
Gclm T A 3: 122,262,688 H86Q possibly damaging Het
Gipc2 T C 3: 152,107,997 T220A probably benign Het
Gm12185 G T 11: 48,915,355 N336K possibly damaging Het
Gm5431 A T 11: 48,895,364 S61R probably benign Het
Gm884 T C 11: 103,618,950 probably benign Het
Gorasp2 C T 2: 70,688,400 P260S probably damaging Het
H2-M10.6 A G 17: 36,813,160 Q172R probably benign Het
Ibsp A G 5: 104,302,152 I6V probably damaging Het
Iqsec1 T C 6: 90,689,676 Y593C probably damaging Het
Itln1 G T 1: 171,531,551 Y61* probably null Het
Kif21a G A 15: 90,993,753 T284I probably damaging Het
Kif3a G A 11: 53,598,312 G621R probably damaging Het
Klb A G 5: 65,378,974 Y549C probably damaging Het
Lman1l G A 9: 57,608,312 R427C probably benign Het
Map4 T C 9: 110,034,964 V419A probably benign Het
Mastl A T 2: 23,133,132 D526E probably benign Het
Mrvi1 T C 7: 110,895,931 K429R probably damaging Het
Mtif2 A G 11: 29,536,914 D308G probably benign Het
Ncald A G 15: 37,397,334 F34S probably damaging Het
Ndc1 A G 4: 107,395,812 T593A probably benign Het
Ndst3 C T 3: 123,606,968 V15I probably benign Het
Nup214 A G 2: 32,025,301 N1166D probably benign Het
Olfr1031 A T 2: 85,992,684 Y289F probably damaging Het
Olfr1240 G A 2: 89,439,869 Q137* probably null Het
Olfr1368 A G 13: 21,142,617 S147P probably benign Het
Olfr403 A G 11: 74,196,421 H306R probably benign Het
Pcdhb8 T C 18: 37,356,727 I486T probably benign Het
Pdzrn4 A T 15: 92,770,271 Y768F probably benign Het
Pgf A G 12: 85,171,767 S70P probably benign Het
Plcl2 G A 17: 50,607,072 A370T possibly damaging Het
Pnkp T A 7: 44,862,537 W115R probably benign Het
Ppp1r16a C T 15: 76,693,669 Q328* probably null Het
Prag1 A G 8: 36,146,645 E1117G probably damaging Het
Prr12 T A 7: 45,029,047 Q1919L unknown Het
Ret G T 6: 118,173,558 H666N possibly damaging Het
Rfwd3 C T 8: 111,288,242 R326Q probably damaging Het
Robo2 C T 16: 73,948,296 G864S probably damaging Het
Rpa2 T G 4: 132,771,860 I80S probably damaging Het
Ryk A T 9: 102,898,475 D428V probably damaging Het
Slc29a1 A T 17: 45,590,278 N30K probably damaging Het
Stbd1 A G 5: 92,604,936 N95S probably benign Het
Tbc1d22a A G 15: 86,292,134 E212G probably benign Het
Tex14 A G 11: 87,536,742 T7A probably benign Het
Tmc8 T C 11: 117,792,563 V648A possibly damaging Het
Tmem132b G T 5: 125,787,019 V730F probably damaging Het
Tmub2 G A 11: 102,287,370 G33D possibly damaging Het
Trak1 G A 9: 121,440,679 D124N probably damaging Het
Ttc28 A T 5: 111,231,111 Y1154F probably damaging Het
Ttn T C 2: 76,909,369 T3609A probably benign Het
Tulp2 A G 7: 45,517,842 T99A probably benign Het
Ugt2a2 A T 5: 87,465,568 probably null Het
Ush2a G A 1: 188,678,411 V2419I probably benign Het
Vill C A 9: 119,070,321 P343Q probably damaging Het
Vmn2r66 T A 7: 85,006,854 H318L possibly damaging Het
Wdr3 A C 3: 100,142,219 N800K probably benign Het
Wdr93 A G 7: 79,749,174 K19E probably damaging Het
Wrn A G 8: 33,316,408 S333P probably damaging Het
Zfp418 T C 7: 7,182,501 S488P possibly damaging Het
Zfp804a A G 2: 82,256,697 E290G probably benign Het
Other mutations in Chrna4
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00815:Chrna4 APN 2 181029391 missense probably benign 0.09
IGL00914:Chrna4 APN 2 181029031 missense probably damaging 1.00
IGL01511:Chrna4 APN 2 181028668 missense probably benign 0.13
IGL02517:Chrna4 APN 2 181029133 missense probably benign 0.01
IGL02715:Chrna4 APN 2 181029581 unclassified probably benign
R1475:Chrna4 UTSW 2 181029379 missense probably benign 0.44
R1572:Chrna4 UTSW 2 181029307 missense possibly damaging 0.95
R4428:Chrna4 UTSW 2 181028620 missense probably damaging 0.99
R4429:Chrna4 UTSW 2 181028620 missense probably damaging 0.99
R4431:Chrna4 UTSW 2 181028620 missense probably damaging 0.99
R4494:Chrna4 UTSW 2 181028488 missense probably damaging 0.98
R4664:Chrna4 UTSW 2 181037493 missense probably damaging 1.00
R4666:Chrna4 UTSW 2 181037493 missense probably damaging 1.00
R4931:Chrna4 UTSW 2 181028872 missense probably benign 0.00
R5144:Chrna4 UTSW 2 181024830 missense probably damaging 1.00
R5556:Chrna4 UTSW 2 181033980 missense possibly damaging 0.94
R5633:Chrna4 UTSW 2 181029460 missense probably damaging 1.00
R5889:Chrna4 UTSW 2 181028658 missense probably damaging 1.00
R6056:Chrna4 UTSW 2 181029442 missense probably damaging 1.00
R6120:Chrna4 UTSW 2 181024806 missense probably damaging 1.00
R7030:Chrna4 UTSW 2 181029541 missense probably damaging 1.00
R7352:Chrna4 UTSW 2 181037474 missense probably damaging 0.97
R7694:Chrna4 UTSW 2 181018593 missense
R7945:Chrna4 UTSW 2 181028661 missense probably benign 0.04
R8075:Chrna4 UTSW 2 181039066 missense unknown
R8706:Chrna4 UTSW 2 181037514 missense probably damaging 1.00
R9091:Chrna4 UTSW 2 181028850 missense possibly damaging 0.79
R9138:Chrna4 UTSW 2 181028982 missense probably damaging 0.97
R9154:Chrna4 UTSW 2 181028809 missense probably damaging 0.99
R9270:Chrna4 UTSW 2 181028850 missense possibly damaging 0.79
R9598:Chrna4 UTSW 2 181037471 missense probably damaging 1.00
Z1177:Chrna4 UTSW 2 181024813 missense probably damaging 1.00
Z1177:Chrna4 UTSW 2 181028285 missense possibly damaging 0.80
Predicted Primers
Posted On 2014-01-15