Incidental Mutation 'R4230:Atxn7'
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Nameataxin 7
SynonymsA430107N12Rik, ataxin-7, Sca7
MMRRC Submission 041049-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R4230 (G1)
Quality Score225
Status Not validated
Chromosomal Location13961440-14107302 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) G to A at 14100381 bp
Amino Acid Change Serine to Asparagine at position 689 (S689N)
Ref Sequence ENSEMBL: ENSMUSP00000153613 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
Predicted Effect probably benign
Transcript: ENSMUST00000022257
AA Change: S689N

PolyPhen 2 Score 0.002 (Sensitivity: 0.99; Specificity: 0.30)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: S689N

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: S689N

PolyPhen 2 Score 0.003 (Sensitivity: 0.98; Specificity: 0.44)
Predicted Effect probably benign
Transcript: ENSMUST00000223880
AA Change: S689N

PolyPhen 2 Score 0.002 (Sensitivity: 0.99; Specificity: 0.30)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000223932
Predicted Effect probably benign
Transcript: ENSMUST00000224315
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.4%
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: 47 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
A2ml1 C T 6: 128,580,386 A115T probably benign Het
Alg11 T A 8: 22,065,518 I223N probably damaging Het
Ankrd26 G C 6: 118,559,388 probably null Het
Apbb1 T C 7: 105,567,684 D264G probably damaging Het
Arhgap32 T C 9: 32,257,474 Y918H probably benign Het
Astn2 T G 4: 65,911,682 T584P probably damaging Het
Cacna1h T C 17: 25,387,863 N873S probably damaging Het
Cadps T A 14: 12,488,987 I857F probably damaging Het
Ccdc189 T A 7: 127,586,830 M102L probably benign Het
Cog6 T C 3: 52,992,808 T511A probably benign Het
Dppa3 A T 6: 122,629,332 N118I probably damaging Het
Dst A G 1: 34,195,828 N3663D probably benign Het
Eme1 G A 11: 94,647,992 T354M possibly damaging Het
Gm10735 T C 13: 113,041,209 probably benign Het
Gm2035 A T 12: 87,919,797 S21T unknown Het
Ifi44l A T 3: 151,762,877 C5* probably null Het
Itln1 G A 1: 171,534,807 T2I probably benign Het
Jam2 T A 16: 84,821,292 M309K possibly damaging Het
Kcnk5 C A 14: 20,144,784 C162F probably damaging Het
Metrn A G 17: 25,796,941 probably benign Het
Muc5b T A 7: 141,863,522 Y3402N probably benign Het
Ncoa7 A T 10: 30,698,257 probably null Het
Nxpe4 A G 9: 48,392,822 R70G possibly damaging Het
Olfr1281 T G 2: 111,329,130 L237R probably damaging Het
Olfr134 A C 17: 38,175,881 I266L possibly damaging Het
Olfr373 T C 8: 72,100,344 Y195H probably damaging Het
Olfr670 A T 7: 104,960,594 I46N probably benign Het
Onecut3 T C 10: 80,513,959 I429T probably damaging Het
Pds5a A G 5: 65,629,986 S858P possibly damaging Het
Phf11c A T 14: 59,393,067 V63E probably benign Het
Rasa3 A G 8: 13,570,264 F802L possibly damaging Het
Sec24b G T 3: 130,040,719 Q141K probably benign Het
Sec61a1 A T 6: 88,515,431 probably null Het
Slc45a3 T A 1: 131,981,661 L532Q probably damaging Het
Slc46a2 T C 4: 59,914,048 I292V probably benign Het
Smg1 C T 7: 118,148,733 probably null Het
Spag6 T A 2: 18,715,638 probably null Het
Spi1 T C 2: 91,115,335 F254L probably damaging Het
Sspo T C 6: 48,490,934 S4272P probably benign Het
Tgm5 T C 2: 121,070,735 T292A probably damaging Het
Tmem229a T A 6: 24,954,832 I308F probably damaging Het
Ttn T C 2: 76,724,120 I30784V possibly damaging Het
Urod T A 4: 116,992,683 T173S probably benign Het
Vmn1r223 A T 13: 23,249,415 M60L probably benign Het
Vmn2r2 T A 3: 64,134,491 I268L probably benign Het
Vwa8 C T 14: 79,082,852 T1101M probably benign Het
Zc3h12c T A 9: 52,144,428 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
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
R5561:Atxn7 UTSW 14 14089260 missense probably benign 0.19
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
Predicted Primers PCR Primer

Sequencing Primer
Posted On2015-06-12