Incidental Mutation 'R5185:Atxn7'
ID 397835
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Name ataxin 7
Synonyms Sca7, A430107N12Rik, ataxin-7
MMRRC Submission 042764-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R5185 (G1)
Quality Score 225
Status Validated
Chromosome 14
Chromosomal Location 8362461-8508323 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 14090063 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Threonine at position 336 (I336T)
Ref Sequence ENSEMBL: ENSMUSP00000152934 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
AlphaFold Q8R4I1
Predicted Effect probably benign
Transcript: ENSMUST00000022257
AA Change: I336T

PolyPhen 2 Score 0.043 (Sensitivity: 0.94; Specificity: 0.83)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: I336T

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: I336T

PolyPhen 2 Score 0.041 (Sensitivity: 0.94; Specificity: 0.83)
Predicted Effect probably benign
Transcript: ENSMUST00000223880
AA Change: I336T

PolyPhen 2 Score 0.043 (Sensitivity: 0.94; Specificity: 0.83)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000224616
Meta Mutation Damage Score 0.1825 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.7%
  • 10x: 97.3%
  • 20x: 95.4%
Validation Efficiency 95% (70/74)
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: 67 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acsf2 T C 11: 94,453,737 (GRCm39) Y408C probably damaging Het
Aox4 T C 1: 58,293,477 (GRCm39) L943S probably damaging Het
Ap1g1 G A 8: 110,589,958 (GRCm39) probably benign Het
Arsb T C 13: 93,930,667 (GRCm39) S212P probably damaging Het
Arsi A G 18: 61,049,984 (GRCm39) N289S probably damaging Het
Atp6v1h T A 1: 5,165,865 (GRCm39) F72I probably damaging Het
Bak1 G A 17: 27,241,722 (GRCm39) P65L possibly damaging Het
Bcl6 A T 16: 23,791,697 (GRCm39) M219K possibly damaging Het
Brd3 T C 2: 27,352,460 (GRCm39) K157E probably damaging Het
Ccdc171 T G 4: 83,581,892 (GRCm39) S674A possibly damaging Het
Cfap43 A G 19: 47,768,833 (GRCm39) I737T probably benign Het
Cul9 A T 17: 46,836,758 (GRCm39) V1089D possibly damaging Het
Dffa C A 4: 149,201,887 (GRCm39) A155E probably benign Het
Dnhd1 G A 7: 105,352,416 (GRCm39) R2523Q probably damaging Het
Efcab12 T A 6: 115,800,451 (GRCm39) M191L probably benign Het
Efl1 T C 7: 82,421,707 (GRCm39) L1018P probably damaging Het
Fcho1 A G 8: 72,167,600 (GRCm39) probably benign Het
Fndc3b T A 3: 27,511,219 (GRCm39) T764S probably benign Het
Gm29125 T C 1: 80,361,948 (GRCm39) noncoding transcript Het
Gm5108 A G 5: 68,101,953 (GRCm39) probably benign Het
Gm9949 T G 18: 62,313,636 (GRCm39) probably benign Het
Golgb1 T C 16: 36,695,503 (GRCm39) probably benign Het
Gpd2 T C 2: 57,230,216 (GRCm39) Y323H probably damaging Het
Grip1 T G 10: 119,767,164 (GRCm39) D96E probably benign Het
Hmcn1 T C 1: 150,532,492 (GRCm39) I3132V probably benign Het
Hsd17b1 T C 11: 100,971,024 (GRCm39) W327R possibly damaging Het
Htra2 G A 6: 83,031,223 (GRCm39) P62L probably benign Het
Kdr A T 5: 76,113,077 (GRCm39) probably null Het
Kif14 T A 1: 136,455,207 (GRCm39) C1626* probably null Het
Kmt2a A T 9: 44,731,543 (GRCm39) probably benign Het
Krt15 T C 11: 100,024,259 (GRCm39) T321A probably damaging Het
Lactbl1 A T 4: 136,358,356 (GRCm39) H109L probably benign Het
Lilra6 T A 7: 3,917,635 (GRCm39) H120L probably benign Het
Lpcat2 G A 8: 93,596,365 (GRCm39) S134N probably benign Het
Mpp4 T C 1: 59,164,742 (GRCm39) D465G probably benign Het
Naip2 A T 13: 100,325,859 (GRCm39) D16E probably damaging Het
Nek5 C T 8: 22,573,397 (GRCm39) A520T possibly damaging Het
Nfatc2 A G 2: 168,412,627 (GRCm39) F132L possibly damaging Het
Nlrp3 C A 11: 59,455,910 (GRCm39) T902N probably benign Het
Or10d1b A T 9: 39,613,172 (GRCm39) W298R probably benign Het
Or4c123 A T 2: 89,126,731 (GRCm39) H294Q probably benign Het
Or7e165 T C 9: 19,694,672 (GRCm39) M81T probably damaging Het
Or8h7 T C 2: 86,720,946 (GRCm39) D191G probably benign Het
Pcdhb16 T C 18: 37,613,142 (GRCm39) S701P possibly damaging Het
Phf7 A G 14: 30,969,994 (GRCm39) probably null Het
Plpp4 G A 7: 128,918,028 (GRCm39) V68M probably damaging Het
Pnma2 A T 14: 67,153,578 (GRCm39) M1L possibly damaging Het
Pnma8b A T 7: 16,679,901 (GRCm39) D295V probably damaging Het
Rad21l T C 2: 151,499,382 (GRCm39) D270G probably benign Het
Ralgapa2 C A 2: 146,230,406 (GRCm39) probably null Het
Rasal3 A T 17: 32,615,764 (GRCm39) L334Q probably damaging Het
Rfx4 G T 10: 84,699,114 (GRCm39) R240L probably damaging Het
Rnf19b T A 4: 128,977,713 (GRCm39) C642* probably null Het
Slc28a2 G A 2: 122,288,675 (GRCm39) E594K probably benign Het
Spata31 G T 13: 65,065,340 (GRCm39) W15L possibly damaging Het
Spink5 T C 18: 44,148,711 (GRCm39) S925P probably damaging Het
Svep1 C T 4: 58,084,534 (GRCm39) G1865S probably damaging Het
Tg T C 15: 66,645,323 (GRCm39) L791P probably damaging Het
Thbs4 A C 13: 92,911,675 (GRCm39) V247G probably damaging Het
Tpcn2 A T 7: 144,809,191 (GRCm39) F705Y probably damaging Het
Try10 A T 6: 41,333,483 (GRCm39) H76L probably damaging Het
Ttn C T 2: 76,769,565 (GRCm39) V2695I probably damaging Het
Tut1 C A 19: 8,932,814 (GRCm39) T49N probably benign Het
Vmn1r17 A G 6: 57,337,828 (GRCm39) V130A probably benign Het
Xdh G A 17: 74,232,006 (GRCm39) R235C probably damaging Het
Yipf4 A G 17: 74,799,470 (GRCm39) D70G probably null Het
Zfp108 G T 7: 23,960,163 (GRCm39) K251N probably benign 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
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
R8432:Atxn7 UTSW 14 14,013,635 (GRCm38) missense probably benign 0.06
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'- GTTATCAGTTCTCTCCAGCGAG -3'
(R):5'- GCTCACAGGTACAAGTTATGCTAAC -3'

Sequencing Primer
(F):5'- CTCCAGCGAGAATAATGTTTACTGC -3'
(R):5'- ATGCTAACTCACACCATGTTTTG -3'
Posted On 2016-07-06