Mutagenetix > Incidental Mutation

Incidental Mutation 'R5652:Twnk'

441538

Institutional Source

Beutler Lab

Gene Symbol

Twnk

Ensembl Gene

ENSMUSG00000025209

Gene Name

twinkle mtDNA helicase

Synonyms

Peo1, D19Ertd626e, twinkle, Twinl

MMRRC Submission

043298-MU

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

R5652 (G1)

Quality Score

225

Status

Not validated

Chromosome

Chromosomal Location

44994102-45001201 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

T to A at 44995732 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Valine to Glutamic Acid at position 55 (V55E)

Ref Sequence

ENSEMBL: ENSMUSP00000026227 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000026225] [ENSMUST00000026227] [ENSMUST00000097715] [ENSMUST00000130549] [ENSMUST00000179305]

AlphaFold

Q8CIW5

Predicted Effect

probably benign
Transcript: ENSMUST00000026225

SMART Domains

Protein: ENSMUSP00000026225
Gene: ENSMUSG00000025207

Domain	Start	End	E-Value	Type
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

possibly damaging
Transcript: ENSMUST00000026227
AA Change: V55E

PolyPhen 2 Score 0.853 (Sensitivity: 0.83; Specificity: 0.93)

SMART Domains

Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: V55E

Domain	Start	End	E-Value	Type
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

Domain	Start	End	E-Value	Type
L51_S25_CI-B8	35	108	1.61e-23	SMART

Predicted Effect

probably benign
Transcript: ENSMUST00000130549

SMART Domains

Protein: ENSMUSP00000138321
Gene: ENSMUSG00000025207

Domain	Start	End	E-Value	Type
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

Domain	Start	End	E-Value	Type
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: 99.3%
3x: 98.6%
10x: 97.2%
20x: 95.0%

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: 86 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Abcc4	T	C	14: 118,856,339 (GRCm39)	I334V	probably benign	Het
Adamts5	C	T	16: 85,696,156 (GRCm39)	A334T	probably damaging	Het
Adcy4	G	C	14: 56,010,900 (GRCm39)	F672L	probably benign	Het
Adgrl1	A	G	8: 84,656,444 (GRCm39)	Y254C	probably damaging	Het
Adnp2	A	G	18: 80,174,065 (GRCm39)	S115P	probably damaging	Het
Aox1	A	T	1: 58,134,356 (GRCm39)	S1110C	probably damaging	Het
Arhgap44	G	T	11: 64,915,064 (GRCm39)	N401K	probably damaging	Het
Atp23	A	T	10: 126,735,494 (GRCm39)	N63K	possibly damaging	Het
Atp8b1	G	C	18: 64,664,453 (GRCm39)	I1238M	probably benign	Het
Ccdc38	A	T	10: 93,391,448 (GRCm39)		probably null	Het
Celsr2	T	C	3: 108,304,051 (GRCm39)	D2364G	probably null	Het
Celsr3	G	A	9: 108,715,671 (GRCm39)	D2116N	probably benign	Het
Cenpf	A	G	1: 189,389,279 (GRCm39)	S1518P	probably damaging	Het
Clcn3	C	A	8: 61,372,387 (GRCm39)	V758L	possibly damaging	Het
Cmklr2	A	G	1: 63,222,626 (GRCm39)	V203A	probably benign	Het
Ctsf	T	C	19: 4,908,505 (GRCm39)	L288P	probably damaging	Het
Cwh43	A	G	5: 73,575,484 (GRCm39)	T334A	probably damaging	Het
Cyp3a57	A	T	5: 145,286,135 (GRCm39)		probably null	Het
Ddr1	C	T	17: 35,997,400 (GRCm39)	A531T	probably benign	Het
Dennd1a	A	G	2: 37,691,138 (GRCm39)	I260T	probably benign	Het
Dgkh	T	C	14: 78,865,201 (GRCm39)	H47R	probably damaging	Het
Dync1h1	G	A	12: 110,632,422 (GRCm39)	V4514I	possibly damaging	Het
Dync2h1	A	T	9: 7,116,638 (GRCm39)	M66K	probably benign	Het
Fam186a	T	G	15: 99,843,253 (GRCm39)	Y997S	possibly damaging	Het
Fam8a1	T	A	13: 46,827,814 (GRCm39)	L334H	probably damaging	Het
Fat4	C	T	3: 39,057,117 (GRCm39)	T4271I	probably damaging	Het
Fdxacb1	T	A	9: 50,679,705 (GRCm39)	L41Q	probably damaging	Het
Fgfr2	C	T	7: 129,863,593 (GRCm39)	V18M	probably damaging	Het
Gpa33	A	C	1: 165,992,714 (GRCm39)		probably null	Het
Gpr107	A	G	2: 31,075,601 (GRCm39)	I371V	probably benign	Het
H1f6	A	G	13: 23,880,219 (GRCm39)	K124R	probably benign	Het
Hectd2	T	C	19: 36,581,720 (GRCm39)	V420A	probably damaging	Het
Iglc3	A	G	16: 18,884,420 (GRCm39)		probably benign	Het
Igtp	A	G	11: 58,097,455 (GRCm39)	T209A	probably benign	Het
Itgb7	T	A	15: 102,124,638 (GRCm39)	N793I	possibly damaging	Het
Kansl1	G	A	11: 104,228,992 (GRCm39)	R870C	probably damaging	Het
Kcnh6	C	T	11: 105,899,811 (GRCm39)	R27C	probably damaging	Het
Kif2b	T	A	11: 91,466,656 (GRCm39)	E542D	possibly damaging	Het
Klhl24	C	A	16: 19,938,997 (GRCm39)	Y517*	probably null	Het
Klhl25	A	G	7: 75,515,895 (GRCm39)	D267G	probably benign	Het
Krr1	C	A	10: 111,813,288 (GRCm39)	F195L	possibly damaging	Het
Lsr	C	T	7: 30,658,456 (GRCm39)	G95D	probably damaging	Het
Matcap2	A	G	9: 22,335,786 (GRCm39)	T135A	probably benign	Het
Med15	A	T	16: 17,473,055 (GRCm39)	I504N	probably damaging	Het
Mug1	A	G	6: 121,817,140 (GRCm39)	R70G	probably benign	Het
Mypn	T	A	10: 62,971,580 (GRCm39)	Q820L	probably damaging	Het
Nlrp4f	A	T	13: 65,330,803 (GRCm39)	H863Q	probably benign	Het
Nudt9	G	A	5: 104,207,646 (GRCm39)	V213M	probably benign	Het
Or5ak4	T	A	2: 85,161,717 (GRCm39)	N175I	probably damaging	Het
Or5k14	A	G	16: 58,692,847 (GRCm39)	L222P	probably damaging	Het
Or7g16	A	G	9: 18,726,922 (GRCm39)	S223P	probably damaging	Het
Or8c13	T	C	9: 38,092,111 (GRCm39)	T3A	probably benign	Het
Orc2	A	G	1: 58,505,231 (GRCm39)	F475L	probably damaging	Het
Oxa1l	T	A	14: 54,604,289 (GRCm39)	L183*	probably null	Het
Pcdh20	T	C	14: 88,704,760 (GRCm39)	T847A	probably damaging	Het
Pcdha6	G	A	18: 37,101,889 (GRCm39)		probably null	Het
Pip5k1a	T	C	3: 94,974,750 (GRCm39)	N376S	probably benign	Het
Pkd1l1	T	C	11: 8,859,889 (GRCm39)	E573G	probably benign	Het
Pkp1	T	A	1: 135,810,335 (GRCm39)		probably null	Het
Pum1	T	C	4: 130,491,438 (GRCm39)	I643T	possibly damaging	Het
Rapgef3	A	G	15: 97,656,318 (GRCm39)	S328P	probably benign	Het
Raver1	A	G	9: 21,001,608 (GRCm39)	V75A	probably damaging	Het
Rbm28	T	C	6: 29,135,408 (GRCm39)	E511G	probably damaging	Het
Satb1	T	A	17: 52,049,823 (GRCm39)	T544S	probably damaging	Het
Sdcbp2	T	C	2: 151,431,135 (GRCm39)	V248A	probably benign	Het
Sema7a	A	G	9: 57,867,942 (GRCm39)	D506G	probably damaging	Het
Septin8	A	G	11: 53,428,044 (GRCm39)	E286G	probably damaging	Het
Sh3pxd2b	A	G	11: 32,372,812 (GRCm39)	I660V	probably damaging	Het
Stk38l	G	T	6: 146,674,826 (GRCm39)	D364Y	possibly damaging	Het
Sycp2	T	C	2: 178,000,498 (GRCm39)		probably null	Het
Tbc1d31	T	A	15: 57,815,062 (GRCm39)	S580T	probably damaging	Het
Tcerg1l	G	A	7: 137,881,775 (GRCm39)	R305C	probably damaging	Het
Tek	T	A	4: 94,743,561 (GRCm39)	Y859N	probably damaging	Het
Tjp1	A	T	7: 64,962,191 (GRCm39)		probably null	Het
Tmem132d	A	T	5: 127,861,859 (GRCm39)	I754N	possibly damaging	Het
Togaram1	G	A	12: 65,063,424 (GRCm39)	V1580I	probably benign	Het
Troap	A	G	15: 98,980,145 (GRCm39)	T442A	probably benign	Het
Ttn	A	T	2: 76,712,097 (GRCm39)		probably benign	Het
Uggt1	A	T	1: 36,255,234 (GRCm39)	Y225*	probably null	Het
Vmn2r109	A	G	17: 20,760,781 (GRCm39)	*859Q	probably null	Het
Vmn2r17	A	T	5: 109,577,430 (GRCm39)	I494L	probably benign	Het
Vmn2r88	T	C	14: 51,656,029 (GRCm39)	V746A	probably damaging	Het
Yae1d1	A	G	13: 18,166,291 (GRCm39)	L57P	probably damaging	Het
Zfp26	G	A	9: 20,349,137 (GRCm39)	R476*	probably null	Het
Zmynd8	T	A	2: 165,649,618 (GRCm39)	Q816L	probably damaging	Het
Zswim8	A	T	14: 20,763,495 (GRCm39)	H414L	possibly damaging	Het

Other mutations in Twnk

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00858:Twnk	APN	19	44,996,065 (GRCm39)	missense	probably benign	0.03
IGL01367:Twnk	APN	19	45,000,090 (GRCm39)	missense	possibly damaging	0.92
IGL01736:Twnk	APN	19	44,998,627 (GRCm39)	missense	probably damaging	0.97
IGL02724:Twnk	APN	19	44,996,557 (GRCm39)	missense	probably damaging	0.99
IGL03368:Twnk	APN	19	44,998,931 (GRCm39)	missense	probably damaging	0.99
R0121:Twnk	UTSW	19	44,997,704 (GRCm39)	unclassified	probably benign
R0389:Twnk	UTSW	19	44,996,578 (GRCm39)	missense	possibly damaging	0.67
R0427:Twnk	UTSW	19	44,996,026 (GRCm39)	missense	probably benign	0.00
R0443:Twnk	UTSW	19	44,996,578 (GRCm39)	missense	possibly damaging	0.67
R0501:Twnk	UTSW	19	44,996,185 (GRCm39)	missense	probably damaging	1.00
R0791:Twnk	UTSW	19	44,998,693 (GRCm39)	unclassified	probably benign
R1193:Twnk	UTSW	19	44,996,229 (GRCm39)	missense	probably damaging	1.00
R1470:Twnk	UTSW	19	44,997,820 (GRCm39)	missense	probably damaging	1.00
R1470:Twnk	UTSW	19	44,997,820 (GRCm39)	missense	probably damaging	1.00
R1487:Twnk	UTSW	19	44,996,815 (GRCm39)	critical splice donor site	probably null
R1556:Twnk	UTSW	19	44,997,850 (GRCm39)	missense	possibly damaging	0.80
R3895:Twnk	UTSW	19	44,995,890 (GRCm39)	missense	probably damaging	0.98
R6373:Twnk	UTSW	19	44,997,820 (GRCm39)	missense	probably damaging	1.00
R6595:Twnk	UTSW	19	44,998,931 (GRCm39)	missense	probably damaging	0.99
R6880:Twnk	UTSW	19	44,995,855 (GRCm39)	missense	probably benign
R7349:Twnk	UTSW	19	44,998,600 (GRCm39)	missense	possibly damaging	0.65
R7401:Twnk	UTSW	19	45,000,219 (GRCm39)	missense	probably benign	0.15
R7417:Twnk	UTSW	19	44,999,003 (GRCm39)	splice site	probably null
R7798:Twnk	UTSW	19	44,996,107 (GRCm39)	missense	probably benign	0.00
R7994:Twnk	UTSW	19	44,996,277 (GRCm39)	missense	probably benign	0.03
R8698:Twnk	UTSW	19	44,996,299 (GRCm39)	missense	probably benign
R8826:Twnk	UTSW	19	44,996,434 (GRCm39)	missense	probably benign
R8855:Twnk	UTSW	19	45,000,272 (GRCm39)	nonsense	probably null
R8866:Twnk	UTSW	19	45,000,272 (GRCm39)	nonsense	probably null
R8972:Twnk	UTSW	19	45,000,149 (GRCm39)	missense	probably damaging	1.00
R9683:Twnk	UTSW	19	44,998,622 (GRCm39)	missense	probably damaging	1.00

Predicted Primers

PCR Primer
(F):5'- GTGAAGGCACTGAACCAGAC -3'
(R):5'- CAAAGAAAGTGTCCTGTGGTC -3'

Sequencing Primer
(F):5'- GCGTCCCACTCCATTAGGAATG -3'
(R):5'- CAAAGAAAGTGTCCTGTGGTCTTGTC -3'

Posted On

2016-11-08