Incidental Mutation 'R4688:Atxn7'
ID353894
Institutional Source Beutler Lab
Gene Symbol Atxn7
Ensembl Gene ENSMUSG00000021738
Gene Nameataxin 7
SynonymsA430107N12Rik, ataxin-7, Sca7
MMRRC Submission 041939-MU
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R4688 (G1)
Quality Score225
Status Not validated
Chromosome14
Chromosomal Location13961440-14107302 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to A at 14089288 bp
ZygosityHeterozygous
Amino Acid Change Methionine to Lysine at position 268 (M268K)
Ref Sequence ENSEMBL: ENSMUSP00000152934 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000022257] [ENSMUST00000223714] [ENSMUST00000223880]
Predicted Effect probably benign
Transcript: ENSMUST00000022257
AA Change: M268K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000022257
Gene: ENSMUSG00000021738
AA Change: M268K

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: M268K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect probably benign
Transcript: ENSMUST00000223880
AA Change: M268K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000224616
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.5%
  • 10x: 96.9%
  • 20x: 94.3%
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: 96 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
0610010F05Rik A G 11: 23,593,449 S530P probably benign Het
1700003E16Rik A G 6: 83,162,698 N535S probably damaging Het
2810403A07Rik T A 3: 88,686,517 M71K probably damaging Het
9930021J03Rik A G 19: 29,717,101 I1664T probably benign Het
Abcc12 T C 8: 86,548,694 S452G possibly damaging Het
Acacb C A 5: 114,204,763 Q897K probably benign Het
Acot3 C A 12: 84,053,917 R145S probably damaging Het
AI314180 A G 4: 58,840,757 V667A probably damaging Het
Ankrd54 A T 15: 79,054,582 Y247N probably damaging Het
Arl11 G A 14: 61,311,097 V119I probably benign Het
Bms1 G A 6: 118,392,706 R934C probably damaging Het
Ccdc129 G A 6: 55,967,147 probably null Het
Chrnb3 T C 8: 27,394,119 S295P probably damaging Het
Cic TCCCCC TCCCCCCC 7: 25,291,670 probably null Het
Cnr1 A T 4: 33,944,571 I320F probably benign Het
Cntn4 C T 6: 106,437,949 P147L probably damaging Het
Col24a1 G A 3: 145,314,383 V172I probably benign Het
Col9a3 A G 2: 180,607,631 D262G probably damaging Het
Csrnp2 A G 15: 100,482,360 V350A probably damaging Het
D630045J12Rik A G 6: 38,196,657 V192A possibly damaging Het
Deptor A G 15: 55,208,781 M219V probably benign Het
Dmrtb1 A T 4: 107,684,050 L38Q probably damaging Het
Dvl2 G A 11: 70,007,518 R367Q possibly damaging Het
Dync1h1 T G 12: 110,655,528 I3435S probably damaging Het
Eif2b3 A G 4: 117,058,849 N218D probably benign Het
Epha2 A G 4: 141,318,981 D497G probably benign Het
Epha7 G T 4: 28,821,367 L177F probably damaging Het
Fam214b A G 4: 43,034,663 F352S probably damaging Het
Fam98c C T 7: 29,155,241 E147K probably damaging Het
Fbxo17 A G 7: 28,732,554 T19A probably benign Het
Fbxo47 A G 11: 97,856,223 F339S probably damaging Het
Frmd4a G T 2: 4,537,311 V234L possibly damaging Het
Gal3st2 A G 1: 93,872,523 D32G probably damaging Het
Gpr135 T C 12: 72,070,946 T16A probably benign Het
Gpr160 A T 3: 30,896,686 R302S probably benign Het
Hrh2 C A 13: 54,214,801 N265K probably benign Het
Htatip2 C A 7: 49,773,423 A242E probably damaging Het
Igfbp7 T C 5: 77,407,635 Y127C probably damaging Het
Igkv16-104 A G 6: 68,425,894 Q57R possibly damaging Het
Ino80c A G 18: 24,108,846 S161P probably damaging Het
Kcnc1 A G 7: 46,397,835 D53G probably benign Het
Lce1h G T 3: 92,763,567 R93S unknown Het
Lce1k T C 3: 92,806,644 S78G unknown Het
Lhcgr T A 17: 88,765,152 I156F probably damaging Het
Lpl T C 8: 68,899,425 Y343H probably damaging Het
Lrp6 G T 6: 134,479,743 R853S probably damaging Het
Lrrc7 A G 3: 158,148,605 V1322A probably damaging Het
Lrrc74a C T 12: 86,737,698 Q67* probably null Het
Megf6 A T 4: 154,253,814 D447V probably damaging Het
Mep1a T C 17: 43,482,248 D355G possibly damaging Het
Ncoa1 T C 12: 4,315,781 D95G probably benign Het
Npepl1 A T 2: 174,114,442 I139F possibly damaging Het
Nrcam T C 12: 44,547,237 S262P probably benign Het
Nrp1 A G 8: 128,502,566 N842D probably benign Het
Olfml3 A G 3: 103,732,181 probably benign Het
Olfr1375 A G 11: 51,048,988 R294G probably damaging Het
Olfr1505 A T 19: 13,919,241 T74S probably benign Het
Olfr32 T A 2: 90,138,999 N47Y possibly damaging Het
Olfr421-ps1 T C 1: 174,151,596 Y27H possibly damaging Het
Olfr711 T A 7: 106,971,861 Y161F probably benign Het
Olfr773 G A 10: 129,186,645 P259S probably damaging Het
Olfr918 A G 9: 38,673,363 L27P probably damaging Het
Pde2a A G 7: 101,502,834 N316S probably benign Het
Pde4dip T A 3: 97,843,677 R74* probably null Het
Pex13 A T 11: 23,655,472 W253R possibly damaging Het
Piezo1 A T 8: 122,488,539 W1444R probably damaging Het
Pla2g4e T C 2: 120,167,933 K843R possibly damaging Het
Plxna2 C T 1: 194,644,445 P229L probably damaging Het
Prelid3b G T 2: 174,466,799 T131K probably benign Het
Pros1 T C 16: 62,889,007 probably null Het
Prrc2c G T 1: 162,697,687 P450Q unknown Het
Ptbp1 G T 10: 79,856,508 V5F possibly damaging Het
Ptk2 T A 15: 73,206,225 L997F probably damaging Het
Rims1 G T 1: 22,479,447 S525* probably null Het
Sh2b3 T A 5: 121,818,634 D318V probably benign Het
Slc16a13 A T 11: 70,220,275 I88N probably damaging Het
Slit2 T A 5: 48,257,003 probably null Het
Snx10 A G 6: 51,579,938 N67S probably damaging Het
Stil A G 4: 115,041,308 Y1045C probably damaging Het
Stra6 A G 9: 58,135,076 probably null Het
Sympk A G 7: 19,054,410 S1254G probably benign Het
Syt15 G T 14: 34,228,054 G377V probably damaging Het
Taar4 A T 10: 23,960,833 I114F probably damaging Het
Tcaf3 G A 6: 42,593,366 probably null Het
Tgm7 A T 2: 121,094,021 N558K probably benign Het
Tln2 T G 9: 67,397,653 M1L probably benign Het
Trim50 C T 5: 135,367,140 T314I probably damaging Het
Trp53rka A T 2: 165,491,392 Y192* probably null Het
Ube3b T C 5: 114,393,078 V211A probably benign Het
Ush2a A G 1: 188,399,941 S787G probably benign Het
Vmn1r189 T C 13: 22,102,119 M183V probably damaging Het
Vps13d G T 4: 145,178,212 Q115K probably benign Het
Zfp358 A G 8: 3,495,493 D25G probably damaging Het
Zfp521 T G 18: 13,844,590 K922T probably damaging Het
Zfp521 T A 18: 13,844,591 K922* probably null Het
Zfp68 T A 5: 138,616,481 K4* 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
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
R8432:Atxn7 UTSW 14 14013635 missense probably benign 0.06
R8786:Atxn7 UTSW 14 14103316 missense possibly damaging 0.78
Predicted Primers PCR Primer
(F):5'- TGGCTCGCTGTTAACTCTGC -3'
(R):5'- TGAGAAAGAAGTGTGATGTTACCTG -3'

Sequencing Primer
(F):5'- CTGTGCATACTCAGGTAGATCGAG -3'
(R):5'- GAAGTGTGATGTTACCTGATAATCTC -3'
Posted On2015-10-21