Incidental Mutation 'R8432:Atxn7'
ID 653828
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Name ataxin 7
Synonyms Sca7, A430107N12Rik, ataxin-7
MMRRC Submission 067882-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R8432 (G1)
Quality Score 225.009
Status Validated
Chromosome 14
Chromosomal Location 8362461-8508323 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 14013635 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 112 (V112A)
Ref Sequence ENSEMBL: ENSMUSP00000022257 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
AlphaFold Q8R4I1
Predicted Effect probably benign
Transcript: ENSMUST00000022257
AA Change: V112A

PolyPhen 2 Score 0.059 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: V112A

DomainStartEndE-ValueType
low complexity region 13 47 N/A INTRINSIC
low complexity region 50 66 N/A INTRINSIC
ZnF_C2H2 135 157 2.47e1 SMART
low complexity region 174 197 N/A INTRINSIC
low complexity region 202 218 N/A INTRINSIC
Pfam:SCA7 313 381 1.4e-30 PFAM
low complexity region 393 413 N/A INTRINSIC
low complexity region 470 484 N/A INTRINSIC
low complexity region 619 647 N/A INTRINSIC
low complexity region 675 713 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000223714
AA Change: V112A

PolyPhen 2 Score 0.081 (Sensitivity: 0.93; Specificity: 0.85)
Predicted Effect probably benign
Transcript: ENSMUST00000223880
AA Change: V112A

PolyPhen 2 Score 0.059 (Sensitivity: 0.94; Specificity: 0.84)
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 98.8%
Validation Efficiency 98% (61/62)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The autosomal dominant cerebellar ataxias (ADCA) are a heterogeneous group of neurodegenerative disorders characterized by progressive degeneration of the cerebellum, brain stem and spinal cord. Clinically, ADCA has been divided into three groups: ADCA types I-III. ADCAI is genetically heterogeneous, with five genetic loci, designated spinocerebellar ataxia (SCA) 1, 2, 3, 4 and 6, being assigned to five different chromosomes. ADCAII, which always presents with retinal degeneration (SCA7), and ADCAIII often referred to as the 'pure' cerebellar syndrome (SCA5), are most likely homogeneous disorders. Several SCA genes have been cloned and shown to contain CAG repeats in their coding regions. ADCA is caused by the expansion of the CAG repeats, producing an elongated polyglutamine tract in the corresponding protein. The expanded repeats are variable in size and unstable, usually increasing in size when transmitted to successive generations. This locus has been mapped to chromosome 3, and it has been determined that the diseased allele associated with spinocerebellar ataxia-7 contains 37-306 CAG repeats (near the N-terminus), compared to 4-35 in the normal allele. The encoded protein is a component of the SPT3/TAF9/GCN5 acetyltransferase (STAGA) and TBP-free TAF-containing (TFTC) chromatin remodeling complexes, and it thus plays a role in transcriptional regulation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2016]
PHENOTYPE: Heterozygotes for a targeted mutation with an expanded polyglutamine tract exhibit impaired coordination, ataxia, reduced growth, kyphosis, eye defects, poor reproduction, and high mortality at around 4 months. Homozygotes die at 7-8 weeks of age. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 61 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abhd5 A G 9: 122,197,317 (GRCm39) Y168C probably damaging Het
Agbl1 A C 7: 76,774,434 (GRCm39) R1119S unknown Het
Agpat5 A T 8: 18,896,777 (GRCm39) N68Y probably benign Het
Ap4b1 G A 3: 103,728,135 (GRCm39) R551Q probably benign Het
Arhgef28 T C 13: 98,088,091 (GRCm39) I1122V probably benign Het
Arhgef40 T A 14: 52,226,857 (GRCm39) D300E probably benign Het
AY358078 T A 14: 52,059,635 (GRCm39) L324H unknown Het
Bhlhe40 TG TGG 6: 108,641,818 (GRCm39) 254 probably null Het
Bnip5 C T 17: 29,118,545 (GRCm39) R629H probably benign Het
Cacng2 A G 15: 77,897,522 (GRCm39) Y96H probably damaging Het
Cd2ap A T 17: 43,109,484 (GRCm39) probably null Het
Cdh5 A T 8: 104,839,698 (GRCm39) E56D probably damaging Het
Cfap65 C T 1: 74,967,203 (GRCm39) G249R probably benign Het
Cpne3 A T 4: 19,535,227 (GRCm39) S268R probably benign Het
Cubn T A 2: 13,386,610 (GRCm39) I1552F probably benign Het
Dhrs7 G A 12: 72,711,581 (GRCm39) probably benign Het
Dnah7a G C 1: 53,657,195 (GRCm39) I860M possibly damaging Het
Dync1h1 A T 12: 110,584,576 (GRCm39) M660L probably benign Het
Ecd T A 14: 20,370,998 (GRCm39) T574S probably benign Het
Efna5 A G 17: 62,958,017 (GRCm39) Y80H probably damaging Het
Ercc5 A T 1: 44,206,841 (GRCm39) K585* probably null Het
Erich4 A G 7: 25,314,533 (GRCm39) S127P probably benign Het
Gckr A T 5: 31,466,447 (GRCm39) Q474L possibly damaging Het
Gid8 A G 2: 180,356,654 (GRCm39) N97S probably benign Het
Gm28042 G T 2: 119,869,077 (GRCm39) C557F probably damaging Het
Gp2 C T 7: 119,042,010 (GRCm39) C505Y probably benign Het
Gzf1 A G 2: 148,532,115 (GRCm39) T581A probably benign Het
Heatr5b A T 17: 79,110,930 (GRCm39) Y973N probably damaging Het
Herc2 A G 7: 55,804,860 (GRCm39) E2296G probably benign Het
Hydin A T 8: 111,324,583 (GRCm39) N4648I probably benign Het
Mlip A T 9: 77,098,011 (GRCm39) D157E possibly damaging Het
Mrpl19 A G 6: 81,939,136 (GRCm39) V222A probably damaging Het
Myo18b A G 5: 112,912,378 (GRCm39) V1896A probably benign Het
Myo9a G A 9: 59,687,548 (GRCm39) V218M probably damaging Het
Nepn A T 10: 52,267,880 (GRCm39) T49S probably benign Het
Nsd1 T G 13: 55,395,516 (GRCm39) M1142R possibly damaging Het
Or52e8 T G 7: 104,625,199 (GRCm39) T2P probably benign Het
Or8b40 A G 9: 38,027,272 (GRCm39) Y65C probably damaging Het
Otulinl A T 15: 27,664,818 (GRCm39) M46K possibly damaging Het
Pcnt G A 10: 76,256,039 (GRCm39) R734W probably damaging Het
Pgm2l1 A G 7: 99,909,260 (GRCm39) D242G possibly damaging Het
Pkdrej T G 15: 85,701,494 (GRCm39) I1481L probably benign Het
Prkag1 T C 15: 98,713,425 (GRCm39) I87V possibly damaging Het
Psma1 A T 7: 113,873,080 (GRCm39) I74N probably damaging Het
Rap1gds1 T C 3: 138,647,548 (GRCm39) S547G probably damaging Het
Rbm19 T G 5: 120,313,991 (GRCm39) F868V probably damaging Het
Riok1 T C 13: 38,221,468 (GRCm39) V11A probably benign Het
Smpd3 T A 8: 106,984,309 (GRCm39) probably null Het
Taar3 A T 10: 23,826,053 (GRCm39) I200L probably benign Het
Taf12 A G 4: 132,019,228 (GRCm39) Y139C probably damaging Het
Taf15 AGAAGTGGAGGCTACGGTGGAGACCGAAGTGG AGAAGTGG 11: 83,395,851 (GRCm39) probably benign Het
Tc2n A T 12: 101,615,363 (GRCm39) N487K probably benign Het
Tex15 A C 8: 34,066,572 (GRCm39) I2001L probably damaging Het
Tmem168 A G 6: 13,602,535 (GRCm39) F277S probably benign Het
Trim67 TGCCGCCGCCGCCGC TGCCGCCGCCGC 8: 125,520,801 (GRCm39) probably benign Het
Tspan1 G T 4: 116,021,151 (GRCm39) Q116K probably benign Het
Ttc24 G A 3: 87,977,366 (GRCm39) R325C probably benign Het
Ttn C T 2: 76,693,900 (GRCm39) E323K Het
Xirp2 A T 2: 67,340,962 (GRCm39) M1068L probably benign Het
Zbtb38 A C 9: 96,568,291 (GRCm39) M931R possibly damaging Het
Zfp931 A G 2: 177,711,346 (GRCm39) *65Q probably null Het
Other mutations in Atxn7
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00402:Atxn7 APN 14 14,096,324 (GRCm38) splice site probably benign
IGL00782:Atxn7 APN 14 14,096,218 (GRCm38) missense possibly damaging 0.78
IGL01405:Atxn7 APN 14 14,100,105 (GRCm38) missense probably benign 0.00
IGL02828:Atxn7 APN 14 14,090,056 (GRCm38) missense probably damaging 1.00
IGL03119:Atxn7 APN 14 14,100,734 (GRCm38) missense probably damaging 1.00
IGL03139:Atxn7 APN 14 14,052,994 (GRCm38) missense probably damaging 0.97
IGL03282:Atxn7 APN 14 14,100,564 (GRCm38) missense probably damaging 0.99
IGL03387:Atxn7 APN 14 14,087,273 (GRCm38) splice site probably benign
Estes_park UTSW 14 14,096,317 (GRCm38) critical splice donor site probably null
Lumpy UTSW 14 14,089,446 (GRCm38) nonsense probably null
Oestes_park UTSW 14 14,096,268 (GRCm38) nonsense probably null
R0034:Atxn7 UTSW 14 14,100,846 (GRCm38) missense probably damaging 0.96
R0408:Atxn7 UTSW 14 14,100,317 (GRCm38) missense probably damaging 1.00
R0853:Atxn7 UTSW 14 14,089,465 (GRCm38) splice site probably benign
R1169:Atxn7 UTSW 14 14,095,468 (GRCm38) missense possibly damaging 0.81
R1678:Atxn7 UTSW 14 14,096,239 (GRCm38) missense probably damaging 1.00
R1802:Atxn7 UTSW 14 14,089,419 (GRCm38) missense probably benign 0.25
R2078:Atxn7 UTSW 14 14,052,975 (GRCm38) missense probably damaging 0.99
R2275:Atxn7 UTSW 14 14,013,268 (GRCm38) missense possibly damaging 0.85
R2394:Atxn7 UTSW 14 14,100,237 (GRCm38) missense probably damaging 1.00
R4118:Atxn7 UTSW 14 14,100,308 (GRCm38) missense probably benign 0.00
R4230:Atxn7 UTSW 14 14,100,381 (GRCm38) missense probably benign 0.00
R4588:Atxn7 UTSW 14 14,096,268 (GRCm38) nonsense probably null
R4688:Atxn7 UTSW 14 14,089,288 (GRCm38) missense probably benign 0.00
R4935:Atxn7 UTSW 14 14,100,401 (GRCm38) missense probably benign
R5041:Atxn7 UTSW 14 14,096,317 (GRCm38) critical splice donor site probably null
R5185:Atxn7 UTSW 14 14,090,063 (GRCm38) missense probably benign 0.04
R5561:Atxn7 UTSW 14 14,089,260 (GRCm38) missense probably benign 0.19
R5641:Atxn7 UTSW 14 14,013,638 (GRCm38) missense probably damaging 0.99
R6490:Atxn7 UTSW 14 14,089,446 (GRCm38) nonsense probably null
R6549:Atxn7 UTSW 14 14,013,087 (GRCm38) missense probably damaging 0.99
R6623:Atxn7 UTSW 14 14,099,972 (GRCm38) missense probably damaging 1.00
R6950:Atxn7 UTSW 14 14,095,511 (GRCm38) missense probably damaging 1.00
R7054:Atxn7 UTSW 14 14,100,878 (GRCm38) missense probably benign 0.08
R7402:Atxn7 UTSW 14 14,095,427 (GRCm38) missense probably damaging 0.98
R7762:Atxn7 UTSW 14 14,100,467 (GRCm38) missense probably damaging 1.00
R8786:Atxn7 UTSW 14 14,103,316 (GRCm38) missense possibly damaging 0.78
R9238:Atxn7 UTSW 14 14,089,441 (GRCm38) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- GGGTCAGAGATGCTATCTTCTG -3'
(R):5'- TGCCCATCACTTTGAATTGC -3'

Sequencing Primer
(F):5'- CAGAGATGCTATCTTCTGCTGGG -3'
(R):5'- TTGCTGCCCATTACAGAGAG -3'
Posted On 2020-10-20