Incidental Mutation 'IGL03368:Twnk'
ID420167
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 #IGL03368
Quality Score
Status
Chromosome19
Chromosomal Location45006558-45012762 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 45010492 bp
ZygosityHeterozygous
Amino Acid Change Valine to Alanine at position 557 (V557A)
Ref Sequence ENSEMBL: ENSMUSP00000026227 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000026227] [ENSMUST00000039016] [ENSMUST00000097715] [ENSMUST00000179108]
Predicted Effect probably damaging
Transcript: ENSMUST00000026227
AA Change: V557A

PolyPhen 2 Score 0.993 (Sensitivity: 0.70; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: V557A

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: ENSMUST00000039016
SMART Domains Protein: ENSMUSP00000045478
Gene: ENSMUSG00000035342

DomainStartEndE-ValueType
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

DomainStartEndE-ValueType
L51_S25_CI-B8 35 108 1.61e-23 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000179108
SMART Domains Protein: ENSMUSP00000137571
Gene: ENSMUSG00000035342

DomainStartEndE-ValueType
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
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: 48 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2410089E03Rik T C 15: 8,222,373 V1914A probably benign Het
A530053G22Rik T C 6: 60,403,545 noncoding transcript Het
Abca5 A G 11: 110,313,522 probably benign Het
Agxt2 T A 15: 10,388,170 C278* probably null Het
Ankar A G 1: 72,675,813 L384P probably damaging Het
Ankrd55 T C 13: 112,318,556 probably benign Het
Ap5m1 A G 14: 49,081,136 probably benign Het
Arhgap18 C T 10: 26,772,693 S37F possibly damaging Het
Btnl10 G A 11: 58,919,386 V118I possibly damaging Het
Chst11 C A 10: 83,092,146 P66T probably benign Het
Cited2 C A 10: 17,724,196 P84Q possibly damaging Het
D430042O09Rik T C 7: 125,868,858 probably benign Het
Dpy19l4 T A 4: 11,290,253 I302F possibly damaging Het
Ece2 A G 16: 20,644,158 E640G possibly damaging Het
Fam184b T C 5: 45,531,824 D890G possibly damaging Het
Fam227b A T 2: 126,119,063 D215E probably damaging Het
Foxp2 A G 6: 15,394,718 K139R probably damaging Het
Gle1 T C 2: 29,943,793 C401R probably damaging Het
Gp2 A T 7: 119,452,874 C206S probably damaging Het
Hdgfl2 G T 17: 56,079,746 probably benign Het
Hmcn1 T C 1: 150,663,872 N2956S probably damaging Het
Ifi209 A G 1: 173,642,491 Q215R possibly damaging Het
Il20rb C T 9: 100,459,121 probably benign Het
Kif26b A C 1: 178,916,208 S1290R probably damaging Het
Mical1 A G 10: 41,479,629 I156M probably damaging Het
Nbas C T 12: 13,328,451 A613V probably benign Het
Nbea C T 3: 56,079,930 V380M probably damaging Het
Nutf2 T C 8: 105,875,600 F14S probably damaging Het
Olfr1260 A T 2: 89,977,789 I4L probably benign Het
Olfr582 T A 7: 103,041,765 H95Q possibly damaging Het
Parp1 A G 1: 180,580,622 E236G probably benign Het
Podnl1 G A 8: 84,132,189 V548I probably benign Het
Ptcd2 T A 13: 99,330,069 probably benign Het
Pygl T C 12: 70,191,152 Q704R probably benign Het
Scaper A T 9: 55,656,027 S492T possibly damaging Het
Sephs1 G A 2: 4,889,269 D94N possibly damaging Het
Slc22a29 A C 19: 8,207,262 probably null Het
Slc22a8 G T 19: 8,609,119 probably benign Het
Slfn5 A G 11: 82,956,385 D32G possibly damaging Het
Sphkap T A 1: 83,275,676 T1451S probably benign Het
Srp54a A C 12: 55,091,266 E63A probably null Het
Stap1 T A 5: 86,090,968 I165N probably damaging Het
Terf2 T C 8: 107,070,549 E494G probably damaging Het
Trak1 C A 9: 121,367,122 L7I possibly damaging Het
U2af2 T A 7: 5,067,264 probably benign Het
Ube2j1 T A 4: 33,038,317 I75N probably damaging Het
Ubr5 A G 15: 37,998,316 V1643A probably damaging Het
Vsx2 A G 12: 84,570,300 T120A 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
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 On2016-08-02