Incidental Mutation 'R5561:Atxn7'
ID 436622
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Name ataxin 7
Synonyms A430107N12Rik, ataxin-7, Sca7
MMRRC Submission 043118-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R5561 (G1)
Quality Score 225
Status Not validated
Chromosome 14
Chromosomal Location 13961440-14107302 bp(+) (GRCm38)
Type of Mutation missense
DNA Base Change (assembly) A to T at 14089260 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Threonine to Serine at position 259 (T259S)
Ref Sequence ENSEMBL: ENSMUSP00000153613 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
AlphaFold Q8R4I1
Predicted Effect probably benign
Transcript: ENSMUST00000022257
AA Change: T259S

PolyPhen 2 Score 0.099 (Sensitivity: 0.93; Specificity: 0.85)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: T259S

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: T259S

PolyPhen 2 Score 0.186 (Sensitivity: 0.92; Specificity: 0.87)
Predicted Effect probably benign
Transcript: ENSMUST00000223880
AA Change: T259S

PolyPhen 2 Score 0.099 (Sensitivity: 0.93; Specificity: 0.85)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000224616
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 97.9%
  • 20x: 93.4%
Validation Efficiency
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: 64 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4921530L21Rik C A 14: 95,882,371 A188E probably benign Het
A630095N17Rik T C 1: 75,220,537 probably benign Het
Acyp2 C T 11: 30,506,354 E98K possibly damaging Het
Adgrv1 A G 13: 81,476,564 L3762P probably damaging Het
Amn1 G A 6: 149,185,024 R4W probably damaging Het
Atxn1 G T 13: 45,566,871 T516N possibly damaging Het
Bsn C G 9: 108,105,511 R3681P unknown Het
C8b T C 4: 104,784,448 Y194H possibly damaging Het
Ccdc110 T G 8: 45,940,609 S119R probably benign Het
Ceacam20 A T 7: 19,970,393 Q123L possibly damaging Het
Clip3 A G 7: 30,298,849 D240G possibly damaging Het
Col24a1 T C 3: 145,298,827 F22S probably benign Het
Dlg5 T A 14: 24,177,792 M354L probably benign Het
Dnajb12 GC G 10: 59,892,752 probably null Het
Dnase1l3 A G 14: 7,967,847 V282A probably damaging Het
Dnhd1 G A 7: 105,714,821 G4127S probably damaging Het
Eed G A 7: 89,967,793 R165W probably damaging Het
Ephb2 C T 4: 136,661,406 V627M probably damaging Het
Fancc T C 13: 63,317,387 E502G possibly damaging Het
Fbf1 T C 11: 116,157,820 D105G probably damaging Het
Fer T A 17: 64,037,585 Y246* probably null Het
Fer1l6 A G 15: 58,660,825 K1792E probably damaging Het
Foxi2 A G 7: 135,411,647 D202G probably damaging Het
Gm11595 G A 11: 99,772,555 R100C unknown Het
H2-DMb2 G T 17: 34,145,471 probably null Het
Helq G T 5: 100,787,050 D491E probably benign Het
Hgsnat A G 8: 25,946,334 V564A possibly damaging Het
Hjurp GT GTT 1: 88,266,524 probably null Het
Hs3st5 T A 10: 36,833,429 V320D probably damaging Het
Ifit1bl1 A T 19: 34,593,797 L420* probably null Het
Ift80 T G 3: 68,967,863 N178T probably benign Het
Ing4 C T 6: 125,047,060 T89I possibly damaging Het
Lcp1 G A 14: 75,212,508 D386N probably benign Het
Mdc1 T A 17: 35,848,546 I606K probably benign Het
Mllt10 T A 2: 18,109,845 M120K probably damaging Het
Morc1 G T 16: 48,449,348 L89F probably benign Het
Mroh2a GCCC GC 1: 88,232,257 probably null Het
Nav3 C A 10: 109,716,552 D1810Y probably damaging Het
Obscn G A 11: 59,036,093 T5532M probably damaging Het
Olfr527 C T 7: 140,336,152 Q97* probably null Het
Olfr716 A G 7: 107,148,090 N258S probably benign Het
Opn3 C T 1: 175,665,587 R137H probably damaging Het
Palld G A 8: 61,516,585 A993V probably damaging Het
Ppp1r12c A T 7: 4,486,356 probably null Het
Prdm4 TCTCCTCCT TCTCCT 10: 85,893,123 probably null Het
Rapgef2 A T 3: 79,088,643 probably null Het
Ring1 T C 17: 34,021,458 E382G possibly damaging Het
Rpl22l1 T A 3: 28,806,820 N61K probably benign Het
Rpp14 A G 14: 8,090,558 probably null Het
Rusc2 C T 4: 43,415,932 Q413* probably null Het
Slco3a1 A G 7: 74,318,499 I491T possibly damaging Het
Smtnl1 C T 2: 84,818,395 V172I probably benign Het
Spats2l T A 1: 57,900,621 probably null Het
Spire1 T A 18: 67,506,646 N266Y probably damaging Het
Stox2 T C 8: 47,193,006 H473R probably damaging Het
Syne2 C T 12: 76,094,458 R121* probably null Het
Synrg G A 11: 84,002,240 probably null Het
Tm9sf1 C T 14: 55,638,097 V397M probably damaging Het
Trabd T C 15: 89,081,984 M48T probably benign Het
Ttn T A 2: 76,707,233 I26457F possibly damaging Het
Uggt2 C T 14: 119,041,527 R856Q probably benign Het
Ugt1a5 T A 1: 88,166,317 M89K probably benign Het
Vmn2r53 A T 7: 12,601,420 S104R probably damaging Het
Zdhhc12 A T 2: 30,092,484 L53Q probably null Het
Other mutations in Atxn7
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00402:Atxn7 APN 14 14096324 splice site probably benign
IGL00782:Atxn7 APN 14 14096218 missense possibly damaging 0.78
IGL01405:Atxn7 APN 14 14100105 missense probably benign 0.00
IGL02828:Atxn7 APN 14 14090056 missense probably damaging 1.00
IGL03119:Atxn7 APN 14 14100734 missense probably damaging 1.00
IGL03139:Atxn7 APN 14 14052994 missense probably damaging 0.97
IGL03282:Atxn7 APN 14 14100564 missense probably damaging 0.99
IGL03387:Atxn7 APN 14 14087273 splice site probably benign
Estes_park UTSW 14 14096317 critical splice donor site probably null
Lumpy UTSW 14 14089446 nonsense probably null
Oestes_park UTSW 14 14096268 nonsense probably null
R0034:Atxn7 UTSW 14 14100846 missense probably damaging 0.96
R0408:Atxn7 UTSW 14 14100317 missense probably damaging 1.00
R0853:Atxn7 UTSW 14 14089465 splice site probably benign
R1169:Atxn7 UTSW 14 14095468 missense possibly damaging 0.81
R1678:Atxn7 UTSW 14 14096239 missense probably damaging 1.00
R1802:Atxn7 UTSW 14 14089419 missense probably benign 0.25
R2078:Atxn7 UTSW 14 14052975 missense probably damaging 0.99
R2275:Atxn7 UTSW 14 14013268 missense possibly damaging 0.85
R2394:Atxn7 UTSW 14 14100237 missense probably damaging 1.00
R4118:Atxn7 UTSW 14 14100308 missense probably benign 0.00
R4230:Atxn7 UTSW 14 14100381 missense probably benign 0.00
R4588:Atxn7 UTSW 14 14096268 nonsense probably null
R4688:Atxn7 UTSW 14 14089288 missense probably benign 0.00
R4935:Atxn7 UTSW 14 14100401 missense probably benign
R5041:Atxn7 UTSW 14 14096317 critical splice donor site probably null
R5185:Atxn7 UTSW 14 14090063 missense probably benign 0.04
R5641:Atxn7 UTSW 14 14013638 missense probably damaging 0.99
R6490:Atxn7 UTSW 14 14089446 nonsense probably null
R6549:Atxn7 UTSW 14 14013087 missense probably damaging 0.99
R6623:Atxn7 UTSW 14 14099972 missense probably damaging 1.00
R6950:Atxn7 UTSW 14 14095511 missense probably damaging 1.00
R7054:Atxn7 UTSW 14 14100878 missense probably benign 0.08
R7402:Atxn7 UTSW 14 14095427 missense probably damaging 0.98
R7762:Atxn7 UTSW 14 14100467 missense probably damaging 1.00
R8432:Atxn7 UTSW 14 14013635 missense probably benign 0.06
R8786:Atxn7 UTSW 14 14103316 missense possibly damaging 0.78
R9238:Atxn7 UTSW 14 14089441 missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- AACTTGGCTCGCTGTTAACTC -3'
(R):5'- TGAGAAAGAAGTGTGATGTTACCTG -3'

Sequencing Primer
(F):5'- GGCTCGCTGTTAACTCTGCTAG -3'
(R):5'- GAAGTGTGATGTTACCTGATAATCTC -3'
Posted On 2016-10-24