Incidental Mutation 'R2277:Atxn1'
ID 242867
Institutional Source Beutler Lab
Gene Symbol Atxn1
Ensembl Gene ENSMUSG00000046876
Gene Name ataxin 1
Synonyms Atx1, Sca1, 2900016G23Rik
MMRRC Submission 040276-MU
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R2277 (G1)
Quality Score 225
Status Not validated
Chromosome 13
Chromosomal Location 45703231-46118467 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 45710544 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Asparagine to Serine at position 796 (N796S)
Ref Sequence ENSEMBL: ENSMUSP00000137439 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000091628] [ENSMUST00000167708] [ENSMUST00000180110]
AlphaFold P54254
Predicted Effect possibly damaging
Transcript: ENSMUST00000091628
AA Change: N788S

PolyPhen 2 Score 0.947 (Sensitivity: 0.79; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000089217
Gene: ENSMUSG00000046876
AA Change: N788S

DomainStartEndE-ValueType
low complexity region 47 67 N/A INTRINSIC
low complexity region 153 168 N/A INTRINSIC
Pfam:ATXN-1_C 391 421 8.7e-15 PFAM
AXH 545 664 1.42e-82 SMART
Predicted Effect possibly damaging
Transcript: ENSMUST00000167708
AA Change: N788S

PolyPhen 2 Score 0.947 (Sensitivity: 0.79; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000129890
Gene: ENSMUSG00000046876
AA Change: N788S

DomainStartEndE-ValueType
low complexity region 47 67 N/A INTRINSIC
low complexity region 153 168 N/A INTRINSIC
Pfam:ATXN-1_C 391 421 8.7e-15 PFAM
AXH 545 664 1.42e-82 SMART
Predicted Effect probably damaging
Transcript: ENSMUST00000180110
AA Change: N796S

PolyPhen 2 Score 0.989 (Sensitivity: 0.72; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000137439
Gene: ENSMUSG00000046876
AA Change: N796S

DomainStartEndE-ValueType
low complexity region 47 67 N/A INTRINSIC
low complexity region 153 168 N/A INTRINSIC
Pfam:ATXN-1_C 402 421 3e-10 PFAM
low complexity region 537 548 N/A INTRINSIC
Pfam:AXH 550 671 1.1e-44 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000222227
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.5%
  • 10x: 97.1%
  • 20x: 94.5%
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. The function of the ataxins is not known. This locus has been mapped to chromosome 6, and it has been determined that the diseased allele contains 40-83 CAG repeats, compared to 6-39 in the normal allele, and is associated with spinocerebellar ataxia type 1 (SCA1). At least two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2016]
PHENOTYPE: Mice homozygous for a knock-out allele exhibit decreased exploration, impaired spatial working memory, impaired coordination, and decreased paired-pulse facilitation. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 40 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Ankrd13d T C 19: 4,331,012 (GRCm39) H165R probably benign Het
Arhgap21 T C 2: 20,868,037 (GRCm39) I829V possibly damaging Het
Bdp1 C A 13: 100,197,838 (GRCm39) S849I probably benign Het
Bdp1 T A 13: 100,197,847 (GRCm39) E846V probably damaging Het
Cdh4 C A 2: 179,439,317 (GRCm39) H155N possibly damaging Het
Cela3a T C 4: 137,133,187 (GRCm39) I62V possibly damaging Het
Cr2 T C 1: 194,839,676 (GRCm39) R960G possibly damaging Het
Ddx42 T A 11: 106,133,765 (GRCm39) D580E probably damaging Het
Dnah17 T C 11: 117,987,387 (GRCm39) K1308E possibly damaging Het
Dnajc28 G A 16: 91,413,755 (GRCm39) T187M probably damaging Het
Gh T C 11: 106,191,613 (GRCm39) E143G probably damaging Het
Hcn3 C A 3: 89,055,168 (GRCm39) R693L probably benign Het
Hdlbp G A 1: 93,335,900 (GRCm39) R1199* probably null Het
Hook2 C T 8: 85,729,560 (GRCm39) Q667* probably null Het
Ibtk T C 9: 85,585,204 (GRCm39) I1147V probably benign Het
Itpk1 T C 12: 102,536,519 (GRCm39) T376A probably benign Het
Lars1 C T 18: 42,368,567 (GRCm39) V425I probably benign Het
Lgi4 T G 7: 30,760,037 (GRCm39) L78V probably damaging Het
Madd A T 2: 90,974,028 (GRCm39) C1419S possibly damaging Het
Mamld1 ACAGCAGCAGCAGCAGCAGCAGCAGCAGCAGCAGCAGCAACAGCAGCAGCAGCA ACAGCAGCAGCAGCAGCAGCAGCAGCAGCAGCAGCAACAGCAGCAGCAGCA X: 70,162,421 (GRCm39) probably benign Het
Mpp2 T C 11: 101,955,127 (GRCm39) E166G probably damaging Het
Mrgprb5 A G 7: 47,818,579 (GRCm39) L52P probably damaging Het
Nlrp2 T C 7: 5,331,128 (GRCm39) T423A probably benign Het
Nphs1 T A 7: 30,166,989 (GRCm39) L732* probably null Het
Pcdhb10 T C 18: 37,545,677 (GRCm39) I251T possibly damaging Het
Plcg1 T A 2: 160,597,725 (GRCm39) M789K possibly damaging Het
Pom121l2 T C 13: 22,168,417 (GRCm39) I896T probably benign Het
Ptpn4 T C 1: 119,612,321 (GRCm39) D24G probably damaging Het
Rbm28 T C 6: 29,135,513 (GRCm39) probably null Het
Rbp3 C T 14: 33,677,975 (GRCm39) T641M probably damaging Het
Rhebl1 A T 15: 98,776,167 (GRCm39) D162E probably benign Het
Runx1t1 T C 4: 13,771,501 (GRCm39) V15A probably benign Het
Serpina10 T A 12: 103,593,002 (GRCm39) I291F probably benign Het
Slc23a2 A G 2: 131,933,179 (GRCm39) I93T possibly damaging Het
Slc25a29 T C 12: 108,792,852 (GRCm39) E242G probably benign Het
Sulf1 A C 1: 12,867,018 (GRCm39) R67S probably benign Het
Syne2 A G 12: 75,974,240 (GRCm39) E1146G possibly damaging Het
Tmem45a A T 16: 56,643,882 (GRCm39) L89Q probably damaging Het
Top3a A C 11: 60,636,700 (GRCm39) V655G possibly damaging Het
Ttc23l A G 15: 10,523,678 (GRCm39) I347T possibly damaging Het
Other mutations in Atxn1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01374:Atxn1 APN 13 45,721,903 (GRCm39) utr 5 prime probably benign
IGL01467:Atxn1 APN 13 45,720,669 (GRCm39) missense probably damaging 1.00
IGL01482:Atxn1 APN 13 45,710,790 (GRCm39) missense probably benign 0.00
IGL01512:Atxn1 APN 13 45,720,077 (GRCm39) missense probably damaging 0.99
IGL01735:Atxn1 APN 13 45,720,198 (GRCm39) missense probably damaging 1.00
IGL02005:Atxn1 APN 13 45,721,701 (GRCm39) missense probably benign 0.00
IGL02333:Atxn1 APN 13 45,720,680 (GRCm39) missense probably damaging 1.00
Cormorant UTSW 13 45,710,545 (GRCm39) missense probably damaging 1.00
pelagic UTSW 13 45,720,288 (GRCm39) missense probably benign 0.05
R0136:Atxn1 UTSW 13 45,720,645 (GRCm39) missense probably damaging 0.99
R0180:Atxn1 UTSW 13 45,711,024 (GRCm39) missense probably damaging 1.00
R0299:Atxn1 UTSW 13 45,720,645 (GRCm39) missense probably damaging 0.99
R0540:Atxn1 UTSW 13 45,711,006 (GRCm39) missense probably damaging 1.00
R1220:Atxn1 UTSW 13 45,710,899 (GRCm39) missense probably benign 0.08
R1484:Atxn1 UTSW 13 45,711,052 (GRCm39) nonsense probably null
R1532:Atxn1 UTSW 13 45,720,386 (GRCm39) missense possibly damaging 0.95
R1885:Atxn1 UTSW 13 45,721,280 (GRCm39) missense probably benign 0.27
R2847:Atxn1 UTSW 13 45,720,175 (GRCm39) missense probably damaging 1.00
R2849:Atxn1 UTSW 13 45,720,175 (GRCm39) missense probably damaging 1.00
R4326:Atxn1 UTSW 13 46,119,443 (GRCm39) unclassified probably benign
R4626:Atxn1 UTSW 13 45,720,575 (GRCm39) missense probably damaging 1.00
R4768:Atxn1 UTSW 13 45,711,024 (GRCm39) missense probably damaging 1.00
R4944:Atxn1 UTSW 13 45,720,407 (GRCm39) missense probably damaging 1.00
R5011:Atxn1 UTSW 13 45,710,545 (GRCm39) missense probably damaging 1.00
R5061:Atxn1 UTSW 13 45,710,569 (GRCm39) missense probably damaging 1.00
R5293:Atxn1 UTSW 13 45,721,844 (GRCm39) missense probably damaging 1.00
R5299:Atxn1 UTSW 13 45,710,730 (GRCm39) missense probably benign 0.14
R5561:Atxn1 UTSW 13 45,720,347 (GRCm39) missense possibly damaging 0.49
R5667:Atxn1 UTSW 13 45,710,853 (GRCm39) missense probably benign 0.17
R6092:Atxn1 UTSW 13 45,720,288 (GRCm39) missense probably benign 0.05
R6272:Atxn1 UTSW 13 45,721,238 (GRCm39) missense possibly damaging 0.49
R6372:Atxn1 UTSW 13 45,710,932 (GRCm39) missense probably damaging 1.00
R6688:Atxn1 UTSW 13 45,721,147 (GRCm39) missense probably damaging 0.99
R6997:Atxn1 UTSW 13 45,721,095 (GRCm39) missense probably benign 0.04
R7041:Atxn1 UTSW 13 45,720,311 (GRCm39) missense probably damaging 1.00
R7578:Atxn1 UTSW 13 45,720,834 (GRCm39) missense probably benign 0.02
R7600:Atxn1 UTSW 13 45,710,536 (GRCm39) missense possibly damaging 0.90
R8112:Atxn1 UTSW 13 45,721,433 (GRCm39) missense probably benign
R8297:Atxn1 UTSW 13 45,720,505 (GRCm39) missense probably benign
R8411:Atxn1 UTSW 13 45,720,032 (GRCm39) missense probably benign 0.02
R8482:Atxn1 UTSW 13 45,721,426 (GRCm39) missense possibly damaging 0.75
R9022:Atxn1 UTSW 13 45,720,891 (GRCm39) missense probably damaging 1.00
R9269:Atxn1 UTSW 13 45,710,680 (GRCm39) missense probably benign 0.01
R9310:Atxn1 UTSW 13 45,721,494 (GRCm39) missense probably damaging 1.00
R9514:Atxn1 UTSW 13 45,721,433 (GRCm39) missense probably benign
R9626:Atxn1 UTSW 13 45,710,796 (GRCm39) missense possibly damaging 0.92
R9673:Atxn1 UTSW 13 45,710,622 (GRCm39) missense probably benign 0.01
R9744:Atxn1 UTSW 13 45,721,299 (GRCm39) nonsense probably null
Predicted Primers PCR Primer
(F):5'- ACAGACCCTTGCAGACAATG -3'
(R):5'- TGGCGAACTGAAGTTTCCAG -3'

Sequencing Primer
(F):5'- GCAAACGCACCAGTCTCCTG -3'
(R):5'- AAAAATAGGATTGCCTGCAGC -3'
Posted On 2014-10-16