Incidental Mutation 'R0427:Twnk'
ID38794
Institutional Source Beutler Lab
Gene Symbol Twnk
Ensembl Gene ENSMUSG00000025209
Gene Nametwinkle mtDNA helicase
Synonymstwinkle, Twinl, Peo1, D19Ertd626e
MMRRC Submission 038629-MU
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R0427 (G1)
Quality Score225
Status Not validated
Chromosome19
Chromosomal Location45006558-45012762 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 45007587 bp
ZygosityHeterozygous
Amino Acid Change Glutamic Acid to Glycine at position 153 (E153G)
Ref Sequence ENSEMBL: ENSMUSP00000026227 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000026225] [ENSMUST00000026227] [ENSMUST00000097715] [ENSMUST00000130549] [ENSMUST00000179305]
Predicted Effect probably benign
Transcript: ENSMUST00000026225
SMART Domains Protein: ENSMUSP00000026225
Gene: ENSMUSG00000025207

DomainStartEndE-ValueType
signal peptide 1 17 N/A INTRINSIC
Sema 56 487 2.38e-165 SMART
PSI 505 556 6.59e-13 SMART
IG 567 649 6.26e-5 SMART
low complexity region 650 666 N/A INTRINSIC
transmembrane domain 677 699 N/A INTRINSIC
low complexity region 701 708 N/A INTRINSIC
low complexity region 713 720 N/A INTRINSIC
low complexity region 734 751 N/A INTRINSIC
low complexity region 761 774 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000026227
AA Change: E153G

PolyPhen 2 Score 0.004 (Sensitivity: 0.98; Specificity: 0.59)
SMART Domains Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: E153G

DomainStartEndE-ValueType
low complexity region 213 224 N/A INTRINSIC
Blast:TOPRIM 260 331 8e-16 BLAST
Pfam:AAA_25 377 565 5.6e-25 PFAM
Pfam:DnaB_C 390 631 6.7e-17 PFAM
Pfam:KaiC 394 628 2.6e-11 PFAM
low complexity region 650 661 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000097715
SMART Domains Protein: ENSMUSP00000095322
Gene: ENSMUSG00000025208

DomainStartEndE-ValueType
L51_S25_CI-B8 35 108 1.61e-23 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000130549
SMART Domains Protein: ENSMUSP00000138321
Gene: ENSMUSG00000025207

DomainStartEndE-ValueType
signal peptide 1 17 N/A INTRINSIC
Sema 56 487 2.38e-165 SMART
PSI 505 556 6.59e-13 SMART
IG 567 649 6.26e-5 SMART
low complexity region 650 666 N/A INTRINSIC
transmembrane domain 677 699 N/A INTRINSIC
low complexity region 701 708 N/A INTRINSIC
low complexity region 713 720 N/A INTRINSIC
low complexity region 734 751 N/A INTRINSIC
low complexity region 761 774 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000179305
SMART Domains Protein: ENSMUSP00000137395
Gene: ENSMUSG00000025207

DomainStartEndE-ValueType
signal peptide 1 17 N/A INTRINSIC
Sema 56 487 2.38e-165 SMART
PSI 505 556 6.59e-13 SMART
IG 567 649 6.26e-5 SMART
low complexity region 650 666 N/A INTRINSIC
transmembrane domain 677 699 N/A INTRINSIC
low complexity region 701 708 N/A INTRINSIC
low complexity region 713 720 N/A INTRINSIC
low complexity region 734 751 N/A INTRINSIC
low complexity region 761 774 N/A INTRINSIC
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.3%
  • 10x: 96.2%
  • 20x: 92.9%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a hexameric DNA helicase which unwinds short stretches of double-stranded DNA in the 5' to 3' direction and, along with mitochondrial single-stranded DNA binding protein and mtDNA polymerase gamma, is thought to play a key role in mtDNA replication. The protein localizes to the mitochondrial matrix and mitochondrial nucleoids. Mutations in this gene cause infantile onset spinocerebellar ataxia (IOSCA) and progressive external ophthalmoplegia (PEO) and are also associated with several mitochondrial depletion syndromes. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Aug 2009]
PHENOTYPE: Homozygous embryos display abnormal development. Embryos die around E8.5. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 79 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adam34 T G 8: 43,652,456 T51P probably benign Het
Alpk1 A T 3: 127,671,071 V1186E probably damaging Het
Ankfn1 T C 11: 89,405,597 D102G probably damaging Het
Armc2 A G 10: 42,000,410 I127T possibly damaging Het
Atp6v1b2 T C 8: 69,101,432 L87P probably damaging Het
Atp9a T A 2: 168,640,697 probably null Het
BC048679 C G 7: 81,495,245 V123L probably benign Het
Birc7 G A 2: 180,929,514 probably null Het
Btbd9 C T 17: 30,274,942 D492N possibly damaging Het
Cacna1d T A 14: 30,346,817 N155I probably damaging Het
Cd300lg T C 11: 102,043,026 V33A probably damaging Het
Cep290 A G 10: 100,516,179 D742G probably benign Het
Cep95 A G 11: 106,790,752 N14S probably benign Het
Cfap74 A T 4: 155,441,277 M728L probably benign Het
Ctsll3 T A 13: 60,801,391 T9S probably benign Het
Cyp3a44 A G 5: 145,779,602 S393P possibly damaging Het
Dmbt1 T A 7: 131,040,902 L150* probably null Het
Dnah2 A G 11: 69,452,879 I2868T probably damaging Het
Dopey1 A G 9: 86,507,532 H505R probably damaging Het
Exo1 A G 1: 175,905,953 K781R probably damaging Het
Fam184a A G 10: 53,690,115 Y459H probably damaging Het
Foxp1 C T 6: 98,930,203 D540N probably damaging Het
Fstl5 T A 3: 76,707,727 Y698* probably null Het
Gm13088 A T 4: 143,654,423 N343K probably benign Het
Gm5141 T C 13: 62,774,711 K215E probably damaging Het
Gm7102 A G 19: 61,175,470 Y176H probably damaging Het
Grik5 C A 7: 25,058,498 R386L probably benign Het
Ikbke A T 1: 131,257,910 S620R possibly damaging Het
Kcnh3 A T 15: 99,233,299 M518L probably benign Het
Lrrcc1 G T 3: 14,558,356 A748S probably damaging Het
Mbd5 T G 2: 49,279,079 S1191A probably benign Het
Med27 T C 2: 29,500,271 I70T probably damaging Het
Myh4 A G 11: 67,258,653 D1737G probably damaging Het
Myo5a A G 9: 75,174,196 D1021G probably benign Het
Ncor1 T C 11: 62,410,920 E212G probably damaging Het
Neb A T 2: 52,243,884 N3362K possibly damaging Het
Neb A G 2: 52,244,069 S3301P probably damaging Het
Neurod1 T G 2: 79,454,182 K286Q probably damaging Het
Noc3l T C 19: 38,789,651 Q773R probably benign Het
Nup205 T A 6: 35,194,463 N420K probably benign Het
Olfml3 A T 3: 103,737,014 V113E probably benign Het
Olfr108 T A 17: 37,445,702 D60E probably damaging Het
Olfr128 A T 17: 37,923,629 H21L probably benign Het
Olfr155 A G 4: 43,854,417 Y36C probably damaging Het
Olfr342 C T 2: 36,527,982 S190L probably damaging Het
Opa1 T C 16: 29,611,461 V439A probably damaging Het
Pcdhb11 T C 18: 37,422,765 S383P probably damaging Het
Pkd1 T C 17: 24,593,502 V3803A probably damaging Het
Plekhg1 A G 10: 3,964,235 D1319G probably benign Het
Polq T A 16: 37,061,993 C1227* probably null Het
Psmc1 T C 12: 100,119,228 F283L probably damaging Het
Psmd8 T C 7: 29,176,127 N189S probably damaging Het
Ptger4 G A 15: 5,242,901 T104I probably benign Het
Ptpro T G 6: 137,368,296 V100G possibly damaging Het
Rab11fip1 T A 8: 27,154,492 T422S probably damaging Het
Rad54l2 A G 9: 106,693,692 L1143P possibly damaging Het
Rnf148 A G 6: 23,654,073 M308T probably damaging Het
Sbsn T A 7: 30,752,098 probably benign Het
Scube2 T A 7: 109,824,837 T487S probably benign Het
Sema4c C A 1: 36,553,811 E109* probably null Het
Sipa1l2 A T 8: 125,480,332 L544Q probably damaging Het
Slc28a2 A G 2: 122,458,221 T603A probably benign Het
Tbc1d7 T A 13: 43,153,087 T138S probably benign Het
Timd4 A T 11: 46,819,257 T239S probably benign Het
Trp53bp1 A G 2: 121,236,017 S743P probably damaging Het
Tspan10 T A 11: 120,444,294 Y77N probably damaging Het
Ttc14 T C 3: 33,803,484 S245P probably damaging Het
Ttf1 T A 2: 29,065,042 S139R probably benign Het
Tubd1 C A 11: 86,557,790 Q279K possibly damaging Het
Ush2a A G 1: 188,400,281 D900G probably damaging Het
Usp54 A G 14: 20,570,364 V691A probably benign Het
Usp8 T C 2: 126,718,032 probably benign Het
Vmn1r231 C T 17: 20,890,228 V142I probably benign Het
Vmn2r15 C T 5: 109,287,087 A584T probably damaging Het
Vmn2r6 A G 3: 64,559,587 S164P probably damaging Het
Vps16 A G 2: 130,438,850 Y233C probably benign Het
Vwf C G 6: 125,673,939 H2511D probably benign Het
Wipf3 T G 6: 54,483,897 L110R possibly damaging Het
Zfp945 T A 17: 22,865,252 N11I probably benign Het
Other mutations in Twnk
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00858:Twnk APN 19 45007626 missense probably benign 0.03
IGL01367:Twnk APN 19 45011651 missense possibly damaging 0.92
IGL01736:Twnk APN 19 45010188 missense probably damaging 0.97
IGL02724:Twnk APN 19 45008118 missense probably damaging 0.99
IGL03368:Twnk APN 19 45010492 missense probably damaging 0.99
R0121:Twnk UTSW 19 45009265 unclassified probably benign
R0389:Twnk UTSW 19 45008139 missense possibly damaging 0.67
R0443:Twnk UTSW 19 45008139 missense possibly damaging 0.67
R0501:Twnk UTSW 19 45007746 missense probably damaging 1.00
R0791:Twnk UTSW 19 45010254 unclassified probably benign
R1193:Twnk UTSW 19 45007790 missense probably damaging 1.00
R1470:Twnk UTSW 19 45009381 missense probably damaging 1.00
R1470:Twnk UTSW 19 45009381 missense probably damaging 1.00
R1487:Twnk UTSW 19 45008376 critical splice donor site probably null
R1556:Twnk UTSW 19 45009411 missense possibly damaging 0.80
R3895:Twnk UTSW 19 45007451 missense probably damaging 0.98
R5652:Twnk UTSW 19 45007293 missense possibly damaging 0.85
R6373:Twnk UTSW 19 45009381 missense probably damaging 1.00
R6595:Twnk UTSW 19 45010492 missense probably damaging 0.99
R6880:Twnk UTSW 19 45007416 missense probably benign
Predicted Primers PCR Primer
(F):5'- AAAGGACGCTCCCACTTCCTTCTG -3'
(R):5'- TCCAGTTCACGACTTGTCACAACC -3'

Sequencing Primer
(F):5'- CTGCCTCTTCATTGACAAGAC -3'
(R):5'- TAGTAGCTTCAGGCCACGTAATC -3'
Posted On2013-05-23