Incidental Mutation 'R6732:Top1mt'
ID 530120
Institutional Source Beutler Lab
Gene Symbol Top1mt
Ensembl Gene ENSMUSG00000000934
Gene Name DNA topoisomerase 1, mitochondrial
Synonyms 2900052H09Rik
MMRRC Submission 044850-MU
Accession Numbers
Essential gene? Possibly non essential (E-score: 0.286) question?
Stock # R6732 (G1)
Quality Score 225.009
Status Validated
Chromosome 15
Chromosomal Location 75528884-75550649 bp(-) (GRCm39)
Type of Mutation splice site
DNA Base Change (assembly) A to C at 75541337 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000000958 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000958]
AlphaFold Q8R4U6
Predicted Effect probably null
Transcript: ENSMUST00000000958
SMART Domains Protein: ENSMUSP00000000958
Gene: ENSMUSG00000000934

DomainStartEndE-ValueType
Blast:TOPEUc 72 150 4e-38 BLAST
low complexity region 151 166 N/A INTRINSIC
TOPEUc 189 565 5.86e-230 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000230469
Predicted Effect noncoding transcript
Transcript: ENSMUST00000230774
Meta Mutation Damage Score 0.9755 question?
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 98.3%
  • 20x: 95.5%
Validation Efficiency 98% (43/44)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a mitochondrial DNA topoisomerase that plays a role in the modification of DNA topology. The encoded protein is a type IB topoisomerase and catalyzes the transient breaking and rejoining of DNA to relieve tension and DNA supercoiling generated in the mitochondrial genome during replication and transcription. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, May 2012]
PHENOTYPE: Mice homozygous for a null allele display increased oxidative stress and lipid peroxidation, enhanced glycolysis, and mitochondrial abnormalities. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 43 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcb11 A G 2: 69,117,190 (GRCm39) I486T probably damaging Het
Abcc5 T C 16: 20,223,434 (GRCm39) N158S probably benign Het
AI182371 G T 2: 34,974,717 (GRCm39) probably benign Het
Ap1ar G A 3: 127,609,334 (GRCm39) Q96* probably null Het
Cd101 C T 3: 100,915,515 (GRCm39) S684N probably benign Het
Cdh16 T G 8: 105,345,165 (GRCm39) I375L probably benign Het
Chchd6 A G 6: 89,551,436 (GRCm39) V75A probably benign Het
Coro2a A T 4: 46,551,374 (GRCm39) N110K probably damaging Het
Cyp2c69 A G 19: 39,869,943 (GRCm39) V93A probably benign Het
Dnaaf9 A G 2: 130,652,740 (GRCm39) probably null Het
Egln3 C T 12: 54,227,427 (GRCm39) A235T probably benign Het
Fryl T C 5: 73,212,124 (GRCm39) T2335A probably damaging Het
Fzd3 T C 14: 65,473,252 (GRCm39) D172G probably benign Het
Galnt2 T A 8: 125,067,561 (GRCm39) W447R probably damaging Het
Iqce A G 5: 140,660,990 (GRCm39) L450P probably benign Het
Ly9 T C 1: 171,421,653 (GRCm39) T533A possibly damaging Het
Map3k19 A C 1: 127,751,969 (GRCm39) F257V probably benign Het
Mroh7 GTT GTTT 4: 106,537,910 (GRCm39) probably null Het
Or5ac20 A T 16: 59,104,314 (GRCm39) V182E probably benign Het
Pcdhb11 A T 18: 37,555,197 (GRCm39) I176F probably benign Het
Pigp A C 16: 94,166,300 (GRCm39) L96R probably damaging Het
Pkd1 A G 17: 24,788,387 (GRCm39) D715G probably damaging Het
Plxnd1 A C 6: 115,946,890 (GRCm39) L828R possibly damaging Het
Pramel15 C T 4: 144,099,743 (GRCm39) V341I probably benign Het
Psmd2 T A 16: 20,481,386 (GRCm39) S814T probably benign Het
Pusl1 A G 4: 155,975,573 (GRCm39) S87P probably benign Het
Rgs3 T A 4: 62,521,180 (GRCm39) D34E probably benign Het
Rhof A G 5: 123,269,999 (GRCm39) F53L probably damaging Het
Sik3 C A 9: 46,123,851 (GRCm39) P1217T probably benign Het
Skic2 G A 17: 35,064,166 (GRCm39) R507* probably null Het
Slc14a2 A G 18: 78,235,389 (GRCm39) Y263H probably damaging Het
Slc26a4 C T 12: 31,576,599 (GRCm39) probably null Het
Smyd3 T G 1: 179,223,395 (GRCm39) H178P probably benign Het
Thada T C 17: 84,761,842 (GRCm39) probably null Het
Trim17 A T 11: 58,861,851 (GRCm39) probably null Het
Ttn A T 2: 76,770,395 (GRCm39) F2599I possibly damaging Het
Tuba3a A T 6: 125,258,608 (GRCm39) D127E probably benign Het
Ucp1 A G 8: 84,018,106 (GRCm39) T68A probably benign Het
Vmn2r69 A G 7: 85,060,351 (GRCm39) V411A probably benign Het
Vmn2r74 A T 7: 85,606,758 (GRCm39) V196E probably damaging Het
Wdr59 T C 8: 112,227,684 (GRCm39) Y131C probably damaging Het
Yod1 G A 1: 130,645,275 (GRCm39) G19S probably damaging Het
Zbtb21 G T 16: 97,752,282 (GRCm39) S667Y probably damaging Het
Other mutations in Top1mt
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01925:Top1mt APN 15 75,528,992 (GRCm39) missense possibly damaging 0.47
IGL02111:Top1mt APN 15 75,537,555 (GRCm39) splice site probably benign
IGL02425:Top1mt APN 15 75,547,970 (GRCm39) missense probably benign
IGL02662:Top1mt APN 15 75,540,554 (GRCm39) missense probably damaging 1.00
R1240:Top1mt UTSW 15 75,541,916 (GRCm39) missense probably damaging 0.99
R1438:Top1mt UTSW 15 75,546,247 (GRCm39) missense probably damaging 1.00
R1732:Top1mt UTSW 15 75,538,100 (GRCm39) critical splice donor site probably null
R1884:Top1mt UTSW 15 75,539,750 (GRCm39) missense possibly damaging 0.81
R3413:Top1mt UTSW 15 75,529,025 (GRCm39) missense probably benign 0.41
R3414:Top1mt UTSW 15 75,529,025 (GRCm39) missense probably benign 0.41
R4677:Top1mt UTSW 15 75,535,907 (GRCm39) missense possibly damaging 0.48
R4784:Top1mt UTSW 15 75,547,880 (GRCm39) missense possibly damaging 0.88
R4784:Top1mt UTSW 15 75,529,552 (GRCm39) missense probably damaging 1.00
R4791:Top1mt UTSW 15 75,540,474 (GRCm39) critical splice donor site probably null
R6339:Top1mt UTSW 15 75,537,505 (GRCm39) missense possibly damaging 0.72
R6723:Top1mt UTSW 15 75,539,282 (GRCm39) missense probably benign 0.01
R6841:Top1mt UTSW 15 75,547,973 (GRCm39) missense probably benign 0.00
R6884:Top1mt UTSW 15 75,535,893 (GRCm39) missense probably benign 0.37
R7024:Top1mt UTSW 15 75,539,297 (GRCm39) missense probably damaging 1.00
R7052:Top1mt UTSW 15 75,540,560 (GRCm39) missense possibly damaging 0.82
R7055:Top1mt UTSW 15 75,550,523 (GRCm39) missense probably benign 0.01
R7273:Top1mt UTSW 15 75,535,931 (GRCm39) missense probably benign 0.27
R8032:Top1mt UTSW 15 75,540,572 (GRCm39) missense probably damaging 1.00
R8284:Top1mt UTSW 15 75,539,712 (GRCm39) nonsense probably null
R8510:Top1mt UTSW 15 75,541,151 (GRCm39) missense probably benign 0.02
R9469:Top1mt UTSW 15 75,539,742 (GRCm39) missense probably damaging 1.00
R9522:Top1mt UTSW 15 75,539,309 (GRCm39) missense probably damaging 1.00
R9697:Top1mt UTSW 15 75,547,874 (GRCm39) missense probably damaging 1.00
X0028:Top1mt UTSW 15 75,528,980 (GRCm39) missense probably benign 0.00
Predicted Primers PCR Primer
(F):5'- CTGCTGCAGTTAATGACCACATC -3'
(R):5'- TTTGAGGCGATTCCAGAACC -3'

Sequencing Primer
(F):5'- GCAGTTAATGACCACATCCTCTGG -3'
(R):5'- GCGATTCCAGAACCTGCCTC -3'
Posted On 2018-08-01