Incidental Mutation 'IGL01736:Twnk'
Institutional Source Australian Phenomics Network (link to record)
Gene Symbol Twnk
Ensembl Gene ENSMUSG00000025209
Gene Nametwinkle mtDNA helicase
Synonymstwinkle, Twinl, Peo1, D19Ertd626e
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #IGL01736
Quality Score
Chromosomal Location45006558-45012762 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to G at 45010188 bp
Amino Acid Change Valine to Glycine at position 515 (V515G)
Ref Sequence ENSEMBL: ENSMUSP00000026227 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000026227] [ENSMUST00000039016] [ENSMUST00000097715]
Predicted Effect probably damaging
Transcript: ENSMUST00000026227
AA Change: V515G

PolyPhen 2 Score 0.974 (Sensitivity: 0.76; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: V515G

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: ENSMUST00000039016
SMART Domains Protein: ENSMUSP00000045478
Gene: ENSMUSG00000035342

low complexity region 99 105 N/A INTRINSIC
low complexity region 187 199 N/A INTRINSIC
low complexity region 242 265 N/A INTRINSIC
low complexity region 267 321 N/A INTRINSIC
low complexity region 375 407 N/A INTRINSIC
low complexity region 412 423 N/A INTRINSIC
Pfam:Fez1 441 639 4.2e-82 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000097715
SMART Domains Protein: ENSMUSP00000095322
Gene: ENSMUSG00000025208

L51_S25_CI-B8 35 108 1.61e-23 SMART
Coding Region Coverage
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: 42 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acacb A G 5: 114,188,442 T290A possibly damaging Het
Apip G A 2: 103,087,141 V62M probably damaging Het
Appbp2 T C 11: 85,214,317 K141R possibly damaging Het
Arhgef18 T A 8: 3,451,624 probably benign Het
B3galt2 A G 1: 143,646,845 T240A probably benign Het
Bivm A T 1: 44,141,813 N385I probably damaging Het
Brd4 A T 17: 32,198,675 probably benign Het
Cage1 T C 13: 38,022,813 D352G possibly damaging Het
Ceacam10 A G 7: 24,781,110 Y102C probably damaging Het
Diaph3 T C 14: 86,918,846 D677G probably benign Het
Dis3l T C 9: 64,319,254 probably null Het
Dnah6 C T 6: 73,188,377 V582M probably benign Het
Fndc3b A G 3: 27,467,403 L541P probably damaging Het
Folh1 T C 7: 86,742,236 T384A possibly damaging Het
Gdpd3 T C 7: 126,766,523 L18P probably damaging Het
Grxcr2 T A 18: 41,998,982 K7N probably damaging Het
Gulo A G 14: 65,996,876 F246L probably benign Het
Inpp4b A T 8: 81,997,339 D500V probably benign Het
Ints4 C T 7: 97,526,642 L647F probably benign Het
Kif17 T A 4: 138,286,565 L264Q possibly damaging Het
Kif21a T C 15: 90,959,745 N1104S possibly damaging Het
Ly6e T G 15: 74,958,697 L132R probably benign Het
Mis18bp1 T A 12: 65,138,678 H905L probably damaging Het
Nr2f2 A G 7: 70,354,698 S269P probably damaging Het
Olfr1176 T A 2: 88,340,427 N287K probably damaging Het
Olfr1360 C A 13: 21,674,617 C109F probably benign Het
Olfr1394 G A 11: 49,160,527 C171Y probably damaging Het
Pde8b T C 13: 95,030,402 I757V probably damaging Het
Psg23 A T 7: 18,612,197 I191N possibly damaging Het
Slc12a4 A T 8: 105,945,843 probably null Het
Snph A T 2: 151,594,173 Y209* probably null Het
Tnfaip3 T C 10: 19,006,901 H256R probably damaging Het
Tnip3 T A 6: 65,596,123 probably benign Het
Ttc3 T A 16: 94,442,527 F1130Y probably damaging Het
Usp24 T A 4: 106,423,461 I2324K probably benign Het
Vwa7 T C 17: 35,019,851 F305S probably damaging Het
Ythdc2 A T 18: 44,850,668 Q567L probably damaging Het
Zbtb11 T A 16: 55,998,160 I649K probably damaging Het
Zbtb49 T C 5: 38,200,860 Y683C probably damaging Het
Zfhx4 A T 3: 5,244,092 M793L possibly damaging Het
Zmym6 T G 4: 127,108,644 I556R probably damaging Het
Zswim8 C T 14: 20,714,712 P717S 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
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
R0427:Twnk UTSW 19 45007587 missense probably benign 0.00
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
Posted On2014-01-21