Mutagenetix > Incidental Mutation

Incidental Mutation 'R7401:Twnk'

574211

Institutional Source

Beutler Lab

Gene Symbol

Twnk

Ensembl Gene

ENSMUSG00000025209

Gene Name

twinkle mtDNA helicase

Synonyms

Peo1, D19Ertd626e, twinkle, Twinl

MMRRC Submission

045483-MU

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

R7401 (G1)

Quality Score

225.009

Status

Not validated

Chromosome

Chromosomal Location

44994102-45001201 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

A to G at 45000219 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Aspartic acid to Glycine at position 645 (D645G)

Ref Sequence

ENSEMBL: ENSMUSP00000026227 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000026227] [ENSMUST00000039016] [ENSMUST00000179108]

AlphaFold

Q8CIW5

Predicted Effect

probably benign
Transcript: ENSMUST00000026227
AA Change: D645G

PolyPhen 2 Score 0.147 (Sensitivity: 0.92; Specificity: 0.87)

SMART Domains

Protein: ENSMUSP00000026227
Gene: ENSMUSG00000025209
AA Change: D645G

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: ENSMUST00000039016

SMART Domains

Protein: ENSMUSP00000045478
Gene: ENSMUSG00000035342

Domain	Start	End	E-Value	Type
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: ENSMUST00000179108

SMART Domains

Protein: ENSMUSP00000137571
Gene: ENSMUSG00000035342

Domain	Start	End	E-Value	Type
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

1x: 100.0%
3x: 100.0%
10x: 99.7%
20x: 99.2%

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: 73 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
2610318N02Rik	A	T	16: 16,936,268 (GRCm39)	L152Q	probably benign	Het
Abcg3	A	T	5: 105,114,640 (GRCm39)	N292K	probably damaging	Het
Adamts3	T	A	5: 89,855,309 (GRCm39)		probably null	Het
Adgrg7	T	C	16: 56,562,781 (GRCm39)	N519D	probably benign	Het
Adsl	A	G	15: 80,846,983 (GRCm39)	H263R	probably damaging	Het
Ak9	A	T	10: 41,299,000 (GRCm39)	D1567V	unknown	Het
Bscl2	T	C	19: 8,823,914 (GRCm39)	F280L	possibly damaging	Het
Cacna1b	T	A	2: 24,569,306 (GRCm39)	T873S	probably benign	Het
Cacna1c	T	C	6: 119,029,669 (GRCm39)		probably null	Het
Cast	G	T	13: 74,956,577 (GRCm39)	A18E	unknown	Het
Cd207	A	C	6: 83,654,830 (GRCm39)		probably benign	Het
Cd79b	A	G	11: 106,203,678 (GRCm39)	S130P	probably benign	Het
Cfap52	A	T	11: 67,840,459 (GRCm39)	N157K	probably benign	Het
Cfap57	C	T	4: 118,472,128 (GRCm39)	V84I	probably benign	Het
Chaf1b	G	T	16: 93,681,268 (GRCm39)		probably benign	Het
Cntn1	A	G	15: 92,215,870 (GRCm39)	I968V	probably benign	Het
Cntn5	C	T	9: 9,833,466 (GRCm39)	V362I	probably benign	Het
Crem	A	G	18: 3,295,329 (GRCm39)	S80P	probably damaging	Het
Csnk1g3	C	T	18: 54,063,390 (GRCm39)	T267I	probably damaging	Het
Cyth1	A	T	11: 118,073,077 (GRCm39)	N274K	possibly damaging	Het
Dicer1	C	T	12: 104,678,537 (GRCm39)	G594S	probably benign	Het
Enpp1	C	T	10: 24,521,180 (GRCm39)	C849Y	probably damaging	Het
Fam193a	A	G	5: 34,622,979 (GRCm39)	E1189G	possibly damaging	Het
Fermt1	C	A	2: 132,759,479 (GRCm39)	V426L	probably benign	Het
Fes	A	G	7: 80,028,524 (GRCm39)		probably null	Het
Gmeb1	C	A	4: 131,953,085 (GRCm39)	L560F	probably damaging	Het
Hace1	T	C	10: 45,546,722 (GRCm39)	L452P	probably damaging	Het
Hecw2	T	A	1: 53,943,502 (GRCm39)	H975L	probably damaging	Het
Idh2	GGTCCCAG	GG	7: 79,748,077 (GRCm39)		probably benign	Het
Il1r2	T	A	1: 40,162,370 (GRCm39)	C338S	probably damaging	Het
Iqcn	T	C	8: 71,169,921 (GRCm39)	I1337T	probably benign	Het
Kcnb1	T	C	2: 167,030,204 (GRCm39)	S114G	probably damaging	Het
Lce1c	A	T	3: 92,587,623 (GRCm39)	T17S	unknown	Het
Lhfpl4	C	A	6: 113,153,627 (GRCm39)	L141F	possibly damaging	Het
Ms4a14	T	C	19: 11,279,594 (GRCm39)	E988G	possibly damaging	Het
Naip5	G	T	13: 100,356,205 (GRCm39)	Q1137K	not run	Het
Naip5	T	C	13: 100,356,204 (GRCm39)	Q1137R	probably benign	Het
Neurod1	T	A	2: 79,285,290 (GRCm39)	D31V	probably benign	Het
Neurod4	A	G	10: 130,106,927 (GRCm39)	C116R	probably damaging	Het
Nisch	A	G	14: 30,928,537 (GRCm39)	V28A	probably benign	Het
Odad1	A	C	7: 45,592,189 (GRCm39)	Q323P	probably damaging	Het
Or4a72	A	G	2: 89,405,449 (GRCm39)	V207A	probably benign	Het
Or5d44	T	G	2: 88,141,772 (GRCm39)	M123L	probably benign	Het
Pabpc4l	T	A	3: 46,401,024 (GRCm39)	R207W	probably damaging	Het
Pabpc4l	A	T	3: 46,400,687 (GRCm39)	I319N	probably damaging	Het
Pcm1	G	A	8: 41,762,568 (GRCm39)	D1371N	probably damaging	Het
Peg10	G	GGTC	6: 4,756,452 (GRCm39)		probably benign	Het
Plxnc1	C	T	10: 94,706,867 (GRCm39)	A557T	probably benign	Het
Prkdc	T	A	16: 15,466,602 (GRCm39)	V58D	probably damaging	Het
Prpf40a	A	G	2: 53,046,959 (GRCm39)	V259A	probably benign	Het
Psmd3	A	T	11: 98,576,466 (GRCm39)	T123S	probably benign	Het
Ptgr2	G	T	12: 84,339,103 (GRCm39)		probably benign	Het
Ptprr	A	G	10: 115,884,141 (GRCm39)	H66R	probably benign	Het
Rftn2	A	G	1: 55,233,401 (GRCm39)		probably null	Het
Rsph14	T	A	10: 74,865,628 (GRCm39)	E70V	possibly damaging	Het
Slc24a5	G	A	2: 124,930,111 (GRCm39)	V471I	probably benign	Het
Sorbs1	G	C	19: 40,365,244 (GRCm39)	R180G	probably benign	Het
Spag9	A	T	11: 93,988,515 (GRCm39)	T862S	probably benign	Het
Ssbp2	T	A	13: 91,839,002 (GRCm39)	D291E	probably benign	Het
Supt5	T	C	7: 28,023,197 (GRCm39)	K329E	probably damaging	Het
Syne2	G	T	12: 76,014,155 (GRCm39)	K3115N	probably damaging	Het
Tars1	A	T	15: 11,392,095 (GRCm39)	L239*	probably null	Het
Tbxa2r	T	C	10: 81,168,625 (GRCm39)	Y105H	probably benign	Het
Tesk1	T	A	4: 43,445,743 (GRCm39)	D265E	probably damaging	Het
Tril	T	C	6: 53,795,266 (GRCm39)	D652G	possibly damaging	Het
Tsga10	T	C	1: 37,873,268 (GRCm39)	R204G	probably null	Het
Umodl1	A	T	17: 31,217,122 (GRCm39)	D1118V	probably damaging	Het
Unc119	T	C	11: 78,238,071 (GRCm39)	I83T	probably benign	Het
Unc80	T	C	1: 66,685,574 (GRCm39)	W2233R	possibly damaging	Het
Vmn1r45	T	A	6: 89,910,416 (GRCm39)	T185S	possibly damaging	Het
Vmn2r111	G	T	17: 22,790,067 (GRCm39)	T313K	possibly damaging	Het
Wdr4	A	G	17: 31,728,806 (GRCm39)	L123S	probably damaging	Het
Zfpm2	A	G	15: 40,966,386 (GRCm39)	E957G	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
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
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'- TCTCCTTTAGGCAAGCCAAG -3'
(R):5'- TATATGGAAGAGCCCCAGCAG -3'

Sequencing Primer
(F):5'- GCAGACAATGTTCTGATCTTACAGG -3'
(R):5'- AGAAGGCCTGCTCCACCAG -3'

Posted On

2019-09-13