Mutagenetix > Incidental Mutation

Incidental Mutation 'R7798:Twnk'

600401

Institutional Source

Beutler Lab

Gene Symbol

Twnk

Ensembl Gene

ENSMUSG00000025209

Gene Name

twinkle mtDNA helicase

Synonyms

Peo1, D19Ertd626e, twinkle, Twinl

MMRRC Submission

045648-MU

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

R7798 (G1)

Quality Score

225.009

Status

Not validated

Chromosome

Chromosomal Location

44994102-45001201 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

T to C at 44996107 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Methionine to Threonine at position 180 (M180T)

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

probably benign
Transcript: ENSMUST00000026227
AA Change: M180T

PolyPhen 2 Score 0.005 (Sensitivity: 0.97; Specificity: 0.74)

SMART Domains

Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: M180T

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: 100.0%
3x: 99.9%
10x: 99.6%
20x: 98.7%

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: 77 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
1700088E04Rik	T	A	15: 79,019,932 (GRCm39)	N128I	probably damaging	Het
Abca13	A	G	11: 9,241,664 (GRCm39)	T1176A	probably benign	Het
Abca9	A	G	11: 110,029,005 (GRCm39)	V851A	probably benign	Het
Abcc6	C	A	7: 45,626,277 (GRCm39)	E1494*	probably null	Het
Adamts14	A	T	10: 61,106,952 (GRCm39)	V56E	probably damaging	Het
Adamts15	G	A	9: 30,815,939 (GRCm39)	T639M	probably damaging	Het
Albfm1	T	C	5: 90,745,370 (GRCm39)	S608P	possibly damaging	Het
Arhgap11a	A	C	2: 113,673,680 (GRCm39)	V70G	probably damaging	Het
BC051665	A	T	13: 60,932,249 (GRCm39)	D113E	probably benign	Het
Best1	T	C	19: 9,969,035 (GRCm39)	Y227C	probably damaging	Het
Camk2b	A	G	11: 5,928,399 (GRCm39)	S447P	probably benign	Het
Ccdc88a	C	A	11: 29,427,348 (GRCm39)	Q1018K	probably benign	Het
Cdhr17	T	C	5: 17,061,656 (GRCm39)	F801L	possibly damaging	Het
Cfap74	T	A	4: 155,507,079 (GRCm39)	V180D		Het
Clca3a1	T	A	3: 144,463,723 (GRCm39)	T185S	probably damaging	Het
Clca3b	T	C	3: 144,533,891 (GRCm39)	S495G	probably damaging	Het
Cyb5r2	A	T	7: 107,353,155 (GRCm39)	Y96N	possibly damaging	Het
Cyp21a1	T	C	17: 35,023,295 (GRCm39)	K27E	probably benign	Het
Cyp2ab1	T	C	16: 20,131,166 (GRCm39)	E321G	probably benign	Het
Des	T	C	1: 75,339,003 (GRCm39)	I228T	probably damaging	Het
Dis3l	G	T	9: 64,248,299 (GRCm39)	P39T	probably benign	Het
Disp2	A	C	2: 118,622,360 (GRCm39)	I1031L	probably benign	Het
Ell3	TCTCCTC	TCTC	2: 121,269,937 (GRCm39)		probably benign	Het
Etl4	G	A	2: 20,786,757 (GRCm39)		probably null	Het
Fgf23	A	T	6: 127,050,177 (GRCm39)	D62V	probably damaging	Het
Galnt15	C	T	14: 31,751,862 (GRCm39)	T138I	possibly damaging	Het
Ggt6	A	T	11: 72,326,367 (GRCm39)		probably benign	Het
Gpr180	T	A	14: 118,391,098 (GRCm39)	V209D	probably damaging	Het
Gzma	A	T	13: 113,232,858 (GRCm39)	F78Y	probably benign	Het
Igkv8-30	A	T	6: 70,094,355 (GRCm39)	C19S	probably benign	Het
Il1r1	G	A	1: 40,349,526 (GRCm39)	V361I	probably benign	Het
Intu	T	C	3: 40,646,359 (GRCm39)	V598A	probably damaging	Het
Itpr2	A	G	6: 146,287,513 (GRCm39)	F471L	probably benign	Het
Kntc1	T	A	5: 123,924,357 (GRCm39)	V1081E	probably benign	Het
Kntc1	T	A	5: 123,957,180 (GRCm39)	V2163E	possibly damaging	Het
Macf1	T	C	4: 123,271,893 (GRCm39)	K6552E	probably damaging	Het
Marf1	T	C	16: 13,956,315 (GRCm39)	H842R	probably benign	Het
Mgat4b	A	G	11: 50,116,497 (GRCm39)	T10A	possibly damaging	Het
Muc21	C	G	17: 35,932,146 (GRCm39)	G680A	unknown	Het
Muc5ac	T	C	7: 141,347,778 (GRCm39)		probably null	Het
Nrk	CGCAGCAGCAGCAGCAGCAGC	CGCAGCAGCAGCAGCAGC	X: 137,883,426 (GRCm39)		probably benign	Het
Nsun4	T	G	4: 115,908,371 (GRCm39)	S730R	possibly damaging	Het
Or12e1	A	T	2: 87,022,636 (GRCm39)	I202L	probably benign	Het
Or12k7	A	T	2: 36,959,186 (GRCm39)	S290C	probably damaging	Het
Or1n1	T	C	2: 36,750,348 (GRCm39)	E4G	probably benign	Het
Or4f6	A	G	2: 111,838,617 (GRCm39)	F305L	probably benign	Het
Or4k15	A	T	14: 50,364,895 (GRCm39)	Y287F	probably damaging	Het
Padi3	C	T	4: 140,513,750 (GRCm39)	E653K	probably benign	Het
Pde4a	A	G	9: 21,109,959 (GRCm39)	E280G	possibly damaging	Het
Phactr3	G	A	2: 177,925,703 (GRCm39)	R326H	probably benign	Het
Prob1	G	A	18: 35,786,397 (GRCm39)	P619L	possibly damaging	Het
Ptk2	G	A	15: 73,167,224 (GRCm39)	R368W	probably damaging	Het
Rgs6	A	G	12: 83,116,293 (GRCm39)	T240A	probably benign	Het
Rpa1	A	T	11: 75,203,635 (GRCm39)	Y356N	probably damaging	Het
Rxrb	T	A	17: 34,252,579 (GRCm39)	D165E	probably damaging	Het
Sco1	A	G	11: 66,944,628 (GRCm39)	T84A	possibly damaging	Het
Sepsecs	T	C	5: 52,804,531 (GRCm39)	I380V	probably benign	Het
Sfmbt1	T	A	14: 30,538,759 (GRCm39)	W793R	probably damaging	Het
Slco3a1	A	G	7: 73,968,344 (GRCm39)	S459P	probably benign	Het
Smg1	A	T	7: 117,771,162 (GRCm39)	S1503R	possibly damaging	Het
Sox2	G	A	3: 34,704,791 (GRCm39)	R76H	probably damaging	Het
Spty2d1	G	A	7: 46,645,804 (GRCm39)	S613F	probably damaging	Het
Stab2	A	T	10: 86,793,776 (GRCm39)	Y440N	probably damaging	Het
Syn3	A	G	10: 85,916,117 (GRCm39)	Y290H	probably damaging	Het
Tex15	C	T	8: 34,071,875 (GRCm39)	S2474F	possibly damaging	Het
Tgtp1	A	G	11: 48,878,159 (GRCm39)	F182S	probably benign	Het
Tmcc1	A	T	6: 116,020,539 (GRCm39)	S304R		Het
Tmem130	T	G	5: 144,680,580 (GRCm39)	K275Q	probably damaging	Het
Tmem9	C	A	1: 135,961,927 (GRCm39)	T174K	probably damaging	Het
Ttyh3	C	T	5: 140,620,538 (GRCm39)	R233Q	probably damaging	Het
Tut7	A	T	13: 59,963,389 (GRCm39)	M323K	possibly damaging	Het
Ube4a	A	G	9: 44,844,629 (GRCm39)	V874A	probably damaging	Het
Ugt2a3	T	C	5: 87,475,582 (GRCm39)	N350S	probably damaging	Het
Vegfa	C	T	17: 46,342,761 (GRCm39)	G19D	probably damaging	Het
Vmn2r2	C	A	3: 64,041,518 (GRCm39)	C399F	possibly damaging	Het
Vmn2r65	G	T	7: 84,595,530 (GRCm39)	P385T	probably benign	Het
Vmn2r65	A	G	7: 84,596,192 (GRCm39)	F164S	probably 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
R5652:Twnk	UTSW	19	44,995,732 (GRCm39)	missense	possibly damaging	0.85
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
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'- AAGACTTGCAGGCCAGTGTG -3'
(R):5'- AGTATCTCTCCGGCTGATCAGTG -3'

Sequencing Primer
(F):5'- CAGGCCAGTGTGGAGGGAC -3'
(R):5'- CTCCGGCTGATCAGTGGTAATC -3'

Posted On

2019-11-26