Incidental Mutation 'R6950:Atxn7'
ID 541232
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Name ataxin 7
Synonyms Sca7, A430107N12Rik, ataxin-7
MMRRC Submission 045062-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R6950 (G1)
Quality Score 225.009
Status Validated
Chromosome 14
Chromosomal Location 8362461-8508323 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to A at 14095511 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Proline to Histidine at position 403 (P403H)
Ref Sequence ENSEMBL: ENSMUSP00000153613 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
AlphaFold Q8R4I1
Predicted Effect possibly damaging
Transcript: ENSMUST00000022257
AA Change: P403H

PolyPhen 2 Score 0.825 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: P403H

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 damaging
Transcript: ENSMUST00000223714
AA Change: P403H

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
Predicted Effect possibly damaging
Transcript: ENSMUST00000223880
AA Change: P403H

PolyPhen 2 Score 0.825 (Sensitivity: 0.84; Specificity: 0.93)
Predicted Effect probably benign
Transcript: ENSMUST00000224315
Meta Mutation Damage Score 0.1499 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.4%
  • 20x: 98.4%
Validation Efficiency 98% (59/60)
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: 59 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcc1 T A 16: 14,229,480 (GRCm39) V404D probably damaging Het
Adcy2 A G 13: 69,036,184 (GRCm39) M159T possibly damaging Het
Agtpbp1 T C 13: 59,598,080 (GRCm39) K674R probably benign Het
Cav3 C T 6: 112,449,171 (GRCm39) T63I probably damaging Het
Ccr6 T C 17: 8,475,898 (GRCm39) *368Q probably null Het
Cdh8 A T 8: 99,757,395 (GRCm39) N734K probably benign Het
Ces5a G T 8: 94,257,402 (GRCm39) N134K probably benign Het
Cisd3 T G 11: 97,576,986 (GRCm39) probably null Het
Cyp4f39 T G 17: 32,711,280 (GRCm39) C476G probably damaging Het
Dffb A T 4: 154,054,549 (GRCm39) M180K probably benign Het
Dock4 A G 12: 40,783,313 (GRCm39) E749G possibly damaging Het
Eogt A G 6: 97,111,343 (GRCm39) F173L possibly damaging Het
Ephb1 T A 9: 102,072,108 (GRCm39) T224S probably benign Het
Fam114a1 A T 5: 65,137,322 (GRCm39) E88D possibly damaging Het
Fbn2 A C 18: 58,168,993 (GRCm39) M2262R probably null Het
Fsip2 A G 2: 82,816,332 (GRCm39) I4022V probably benign Het
Gapvd1 A G 2: 34,574,257 (GRCm39) V1301A probably benign Het
Gch1 A T 14: 47,426,723 (GRCm39) M1K probably null Het
Hes1 T C 16: 29,886,089 (GRCm39) F231S probably damaging Het
Hoxb2 A G 11: 96,242,727 (GRCm39) T31A probably benign Het
Ifngr1 T A 10: 19,483,041 (GRCm39) V265D probably damaging Het
Ifnl3 A T 7: 28,222,432 (GRCm39) I58F probably benign Het
Igf2r T C 17: 12,937,605 (GRCm39) T561A probably benign Het
Igfbpl1 T A 4: 45,815,494 (GRCm39) H214L probably damaging Het
Irf8 A G 8: 121,481,864 (GRCm39) T318A probably benign Het
Kmt2d T C 15: 98,737,901 (GRCm39) probably benign Het
Lratd2 T C 15: 60,695,563 (GRCm39) D61G probably benign Het
Lrrc36 G T 8: 106,152,021 (GRCm39) probably null Het
Msl2 C T 9: 100,979,174 (GRCm39) P516L possibly damaging Het
Naaladl1 A T 19: 6,156,011 (GRCm39) I62F probably damaging Het
Neto2 G T 8: 86,397,072 (GRCm39) P60Q probably damaging Het
Nipsnap3b A T 4: 53,015,136 (GRCm39) H61L possibly damaging Het
Npb T C 11: 120,499,473 (GRCm39) F47L probably benign Het
Nutm1 T A 2: 112,078,904 (GRCm39) T1004S probably benign Het
Or4a78 T A 2: 89,497,895 (GRCm39) I112F probably benign Het
Or4z4 A G 19: 12,076,754 (GRCm39) V83A probably benign Het
Or8c17 A T 9: 38,179,842 (GRCm39) N3I probably damaging Het
Oxr1 C A 15: 41,683,951 (GRCm39) A439E probably benign Het
Phf14 A T 6: 12,006,854 (GRCm39) K835N probably damaging Het
Prkdc T A 16: 15,633,850 (GRCm39) V3518E probably damaging Het
Ptpru T A 4: 131,503,663 (GRCm39) E1132D probably damaging Het
Rapgef6 T A 11: 54,567,206 (GRCm39) M1129K probably benign Het
Rgmb T C 17: 16,028,048 (GRCm39) K224E probably damaging Het
Ryr3 T C 2: 112,517,170 (GRCm39) I3318V possibly damaging Het
Slc9a4 A G 1: 40,642,045 (GRCm39) Y338C probably damaging Het
Smg5 T C 3: 88,256,576 (GRCm39) probably null Het
Tenm3 A T 8: 48,693,514 (GRCm39) Y1789* probably null Het
Tgm7 T C 2: 120,924,128 (GRCm39) E598G probably damaging Het
Tiam1 C T 16: 89,657,092 (GRCm39) probably null Het
Tmem175 A G 5: 108,790,948 (GRCm39) N166S probably benign Het
Trp73 G T 4: 154,146,510 (GRCm39) N368K probably benign Het
Trpc3 C T 3: 36,692,739 (GRCm39) R751H probably damaging Het
Trpm4 C A 7: 44,968,704 (GRCm39) A410S probably damaging Het
Ube2t T G 1: 134,899,095 (GRCm39) probably null Het
Vmn2r114 C T 17: 23,529,137 (GRCm39) A322T probably benign Het
Xylt2 C T 11: 94,558,455 (GRCm39) R567H probably benign Het
Zfp119b T C 17: 56,246,137 (GRCm39) K318E probably damaging Het
Zfp626 T G 7: 27,518,339 (GRCm39) L440R probably damaging Het
Zfp850 A G 7: 27,689,939 (GRCm39) S90P possibly damaging 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
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'- CCTTGAACTTAGAGTGAAACTGC -3'
(R):5'- GCCTGAGTGAGTGAACAATGC -3'

Sequencing Primer
(F):5'- ACTTAGAGTGAAACTGCTTGGTTTTG -3'
(R):5'- TGAGTGAACAATGCAGCAGC -3'
Posted On 2018-11-28