Incidental Mutation 'R4230:Atxn7'
ID 320806
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Name ataxin 7
Synonyms Sca7, A430107N12Rik, ataxin-7
MMRRC Submission 041049-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R4230 (G1)
Quality Score 225
Status Not validated
Chromosome 14
Chromosomal Location 8362461-8508323 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 14100381 bp (GRCm38)
Zygosity Heterozygous
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]
AlphaFold Q8R4I1
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

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: 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: 128,557,349 (GRCm39) A115T probably benign Het
Alg11 T A 8: 22,555,534 (GRCm39) I223N probably damaging Het
Ankrd26 G C 6: 118,536,349 (GRCm39) probably null Het
Apbb1 T C 7: 105,216,891 (GRCm39) D264G probably damaging Het
Arhgap32 T C 9: 32,168,770 (GRCm39) Y918H probably benign Het
Astn2 T G 4: 65,829,919 (GRCm39) T584P probably damaging Het
Cacna1h T C 17: 25,606,837 (GRCm39) N873S probably damaging Het
Cadps T A 14: 12,488,987 (GRCm38) I857F probably damaging Het
Cfap119 T A 7: 127,186,002 (GRCm39) M102L probably benign Het
Cog6 T C 3: 52,900,229 (GRCm39) T511A probably benign Het
Dppa3 A T 6: 122,606,291 (GRCm39) N118I probably damaging Het
Dst A G 1: 34,234,909 (GRCm39) N3663D probably benign Het
Eif1ad14 A T 12: 87,886,567 (GRCm39) S21T unknown Het
Eme1 G A 11: 94,538,818 (GRCm39) T354M possibly damaging Het
Gm10735 T C 13: 113,177,743 (GRCm39) probably benign Het
Ifi44l A T 3: 151,468,514 (GRCm39) C5* probably null Het
Itln1 G A 1: 171,362,375 (GRCm39) T2I probably benign Het
Jam2 T A 16: 84,618,180 (GRCm39) M309K possibly damaging Het
Kcnk5 C A 14: 20,194,852 (GRCm39) C162F probably damaging Het
Metrn A G 17: 26,015,915 (GRCm39) probably benign Het
Muc5b T A 7: 141,417,259 (GRCm39) Y3402N probably benign Het
Ncoa7 A T 10: 30,574,253 (GRCm39) probably null Het
Nxpe4 A G 9: 48,304,122 (GRCm39) R70G possibly damaging Het
Onecut3 T C 10: 80,349,793 (GRCm39) I429T probably damaging Het
Or2n1 A C 17: 38,486,772 (GRCm39) I266L possibly damaging Het
Or2z9 T C 8: 72,854,188 (GRCm39) Y195H probably damaging Het
Or4k37 T G 2: 111,159,475 (GRCm39) L237R probably damaging Het
Or52e18 A T 7: 104,609,801 (GRCm39) I46N probably benign Het
Pds5a A G 5: 65,787,329 (GRCm39) S858P possibly damaging Het
Phf11c A T 14: 59,630,516 (GRCm39) V63E probably benign Het
Rasa3 A G 8: 13,620,264 (GRCm39) F802L possibly damaging Het
Sec24b G T 3: 129,834,368 (GRCm39) Q141K probably benign Het
Sec61a1 A T 6: 88,492,413 (GRCm39) probably null Het
Slc45a3 T A 1: 131,909,399 (GRCm39) L532Q probably damaging Het
Slc46a2 T C 4: 59,914,048 (GRCm39) I292V probably benign Het
Smg1 C T 7: 117,747,956 (GRCm39) probably null Het
Spag6 T A 2: 18,720,449 (GRCm39) probably null Het
Spi1 T C 2: 90,945,680 (GRCm39) F254L probably damaging Het
Sspo T C 6: 48,467,868 (GRCm39) S4272P probably benign Het
Tgm5 T C 2: 120,901,216 (GRCm39) T292A probably damaging Het
Tmem229a T A 6: 24,954,831 (GRCm39) I308F probably damaging Het
Ttn T C 2: 76,554,464 (GRCm39) I30784V possibly damaging Het
Urod T A 4: 116,849,880 (GRCm39) T173S probably benign Het
Vmn1r223 A T 13: 23,433,585 (GRCm39) M60L probably benign Het
Vmn2r2 T A 3: 64,041,912 (GRCm39) I268L probably benign Het
Vwa8 C T 14: 79,320,292 (GRCm39) T1101M probably benign Het
Zc3h12c T A 9: 52,055,728 (GRCm39) 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
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
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'- GACAAGTGTCGGCTTCATCCTC -3'
(R):5'- TCTTGATGGGCTCTGCAGAG -3'

Sequencing Primer
(F):5'- GTCGGCTTCATCCTCACCCC -3'
(R):5'- TCTGCAGAGCTCACACCAG -3'
Posted On 2015-06-12