Incidental Mutation 'R8844:Top1'
ID 674578
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 068733-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R8844 (G1)
Quality Score 225.009
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 160563469 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Phenylalanine to Isoleucine at position 767 (F767I)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: F767I

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: F767I

DomainStartEndE-ValueType
low complexity region 20 95 N/A INTRINSIC
low complexity region 150 211 N/A INTRINSIC
Blast:TOPEUc 245 321 9e-19 BLAST
low complexity region 323 339 N/A INTRINSIC
TOPEUc 362 739 4.43e-280 SMART
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.5%
  • 20x: 98.1%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This enzyme catalyzes the transient breaking and rejoining of a single strand of DNA which allows the strands to pass through one another, thus altering the topology of DNA. This gene is localized to chromosome 20 and has pseudogenes which reside on chromosomes 1 and 22. [provided by RefSeq, Jul 2008]
PHENOTYPE: A homozygous mutation resulted in early embryonic lethality at the 4 to 16 cell stage of development. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
9530002B09Rik A T 4: 122,595,011 (GRCm39) H89L possibly damaging Het
Ahnak T C 19: 8,984,254 (GRCm39) V1846A probably damaging Het
Arhgap9 A T 10: 127,161,015 (GRCm39) T181S probably benign Het
Bmp10 A G 6: 87,410,681 (GRCm39) Y158C probably damaging Het
Clec14a A G 12: 58,315,599 (GRCm39) C8R possibly damaging Het
Cntln A G 4: 84,892,234 (GRCm39) H373R probably damaging Het
Cpn2 A G 16: 30,078,115 (GRCm39) S529P probably damaging Het
Csmd3 T C 15: 47,604,590 (GRCm39) N1051S probably damaging Het
Csmd3 G A 15: 48,536,815 (GRCm39) T129M probably damaging Het
F12 T C 13: 55,568,198 (GRCm39) H432R probably damaging Het
Foxm1 T C 6: 128,350,439 (GRCm39) F595S probably damaging Het
Foxred2 A T 15: 77,832,677 (GRCm39) I410N probably benign Het
Fstl5 T A 3: 76,337,154 (GRCm39) F238I possibly damaging Het
Galnt3 A G 2: 65,915,636 (GRCm39) V575A probably benign Het
Gpr149 T A 3: 62,502,572 (GRCm39) Y428F probably benign Het
Gtf2ird1 A T 5: 134,389,879 (GRCm39) Y970* probably null Het
Hint2 G C 4: 43,654,343 (GRCm39) Q157E probably damaging Het
Ighe T C 12: 113,235,006 (GRCm39) T385A Het
Kcnc4 G A 3: 107,355,396 (GRCm39) R351C probably damaging Het
Kif7 A G 7: 79,357,280 (GRCm39) L642S possibly damaging Het
Lilra5 T A 7: 4,241,663 (GRCm39) V154D probably damaging Het
Morc2b A G 17: 33,354,742 (GRCm39) L1010P probably damaging Het
Mphosph10 C A 7: 64,027,087 (GRCm39) K575N probably damaging Het
Mup7 C A 4: 60,067,537 (GRCm39) E193* probably null Het
Nbea T C 3: 55,998,415 (GRCm39) T131A probably damaging Het
Nostrin T C 2: 69,006,060 (GRCm39) I248T probably damaging Het
Nrxn3 A T 12: 89,153,920 (GRCm39) I296F possibly damaging Het
Odam A G 5: 88,037,322 (GRCm39) E172G probably damaging Het
Optn A G 2: 5,031,923 (GRCm39) probably null Het
Or5ac16 G C 16: 59,021,929 (GRCm39) P287A probably damaging Het
Osbpl8 T A 10: 111,112,336 (GRCm39) Y484N probably damaging Het
Patj A G 4: 98,480,206 (GRCm39) N1308D probably damaging Het
Pcdhb17 A T 18: 37,618,801 (GRCm39) E197V probably benign Het
Pcolce2 G A 9: 95,563,625 (GRCm39) D204N possibly damaging Het
Plxna4 T G 6: 32,174,026 (GRCm39) T1190P probably benign Het
Pramel22 A T 4: 143,380,976 (GRCm39) F349Y probably damaging Het
Pzp T C 6: 128,500,950 (GRCm39) Y136C probably damaging Het
Scn10a A T 9: 119,446,791 (GRCm39) N1411K probably damaging Het
Scube1 A G 15: 83,561,164 (GRCm39) C143R probably damaging Het
Stau1 T C 2: 166,793,266 (GRCm39) T290A probably benign Het
Sycp1 T A 3: 102,772,421 (GRCm39) K629I probably damaging Het
Taf1d A G 9: 15,221,324 (GRCm39) E210G probably damaging Het
Tecpr1 T C 5: 144,153,117 (GRCm39) E204G possibly damaging Het
Tmem229a T C 6: 24,955,187 (GRCm39) D189G probably benign Het
Tmem269 G A 4: 119,062,876 (GRCm39) P254S probably damaging Het
Ube2q2 C A 9: 55,102,757 (GRCm39) A331D Het
Usp1 A G 4: 98,823,017 (GRCm39) Y777C probably damaging Het
Usp29 A G 7: 6,964,891 (GRCm39) N245D probably benign Het
Vmn1r212 T A 13: 23,067,526 (GRCm39) Q269L probably benign Het
Wfdc11 T A 2: 164,507,373 (GRCm39) Y28F probably benign Het
Wwp2 A T 8: 108,210,048 (GRCm39) D142V probably damaging Het
Other mutations in Top1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02168:Top1 APN 2 160,546,893 (GRCm39) splice site probably null
IGL03083:Top1 APN 2 160,545,498 (GRCm39) missense probably damaging 0.97
IGL03242:Top1 APN 2 160,557,653 (GRCm39) missense probably damaging 1.00
IGL03369:Top1 APN 2 160,535,647 (GRCm39) missense unknown
Mainspring UTSW 2 160,556,158 (GRCm39) missense probably damaging 0.98
Taut UTSW 2 160,562,921 (GRCm39) missense probably damaging 0.99
unwind UTSW 2 160,546,739 (GRCm39) missense probably damaging 1.00
R0022:Top1 UTSW 2 160,544,719 (GRCm39) missense possibly damaging 0.62
R0449:Top1 UTSW 2 160,554,628 (GRCm39) nonsense probably null
R0501:Top1 UTSW 2 160,556,079 (GRCm39) missense probably damaging 1.00
R0564:Top1 UTSW 2 160,556,185 (GRCm39) missense probably damaging 0.98
R0946:Top1 UTSW 2 160,554,588 (GRCm39) nonsense probably null
R0972:Top1 UTSW 2 160,562,945 (GRCm39) missense probably damaging 1.00
R0976:Top1 UTSW 2 160,559,343 (GRCm39) missense possibly damaging 0.86
R1534:Top1 UTSW 2 160,556,152 (GRCm39) missense probably damaging 1.00
R1608:Top1 UTSW 2 160,545,515 (GRCm39) missense probably benign 0.01
R1655:Top1 UTSW 2 160,545,616 (GRCm39) critical splice donor site probably null
R1818:Top1 UTSW 2 160,557,643 (GRCm39) missense probably damaging 1.00
R1937:Top1 UTSW 2 160,512,042 (GRCm39) missense unknown
R2055:Top1 UTSW 2 160,544,748 (GRCm39) splice site probably benign
R2104:Top1 UTSW 2 160,546,739 (GRCm39) missense probably damaging 1.00
R3705:Top1 UTSW 2 160,544,744 (GRCm39) critical splice donor site probably null
R3769:Top1 UTSW 2 160,563,442 (GRCm39) missense probably damaging 1.00
R3770:Top1 UTSW 2 160,563,442 (GRCm39) missense probably damaging 1.00
R3801:Top1 UTSW 2 160,544,688 (GRCm39) missense probably damaging 1.00
R3804:Top1 UTSW 2 160,544,688 (GRCm39) missense probably damaging 1.00
R3928:Top1 UTSW 2 160,529,669 (GRCm39) splice site probably benign
R4598:Top1 UTSW 2 160,562,885 (GRCm39) missense possibly damaging 0.89
R4651:Top1 UTSW 2 160,554,637 (GRCm39) missense probably damaging 1.00
R4652:Top1 UTSW 2 160,554,637 (GRCm39) missense probably damaging 1.00
R4742:Top1 UTSW 2 160,545,490 (GRCm39) critical splice acceptor site probably null
R5523:Top1 UTSW 2 160,544,695 (GRCm39) nonsense probably null
R6292:Top1 UTSW 2 160,540,061 (GRCm39) missense probably benign 0.19
R6724:Top1 UTSW 2 160,554,616 (GRCm39) missense probably damaging 1.00
R7354:Top1 UTSW 2 160,546,878 (GRCm39) missense probably damaging 1.00
R7461:Top1 UTSW 2 160,554,762 (GRCm39) splice site probably null
R7843:Top1 UTSW 2 160,556,176 (GRCm39) missense possibly damaging 0.90
R7855:Top1 UTSW 2 160,556,008 (GRCm39) missense probably damaging 1.00
R8100:Top1 UTSW 2 160,540,155 (GRCm39) nonsense probably null
R8302:Top1 UTSW 2 160,545,496 (GRCm39) missense probably damaging 1.00
R8377:Top1 UTSW 2 160,488,009 (GRCm39) start gained probably benign
R8380:Top1 UTSW 2 160,559,315 (GRCm39) missense probably benign 0.00
R8381:Top1 UTSW 2 160,545,594 (GRCm39) missense probably null 0.77
R8392:Top1 UTSW 2 160,559,374 (GRCm39) nonsense probably null
R8713:Top1 UTSW 2 160,559,360 (GRCm39) missense probably damaging 0.98
R8773:Top1 UTSW 2 160,556,158 (GRCm39) missense probably damaging 0.98
R8949:Top1 UTSW 2 160,547,182 (GRCm39) missense possibly damaging 0.77
R8992:Top1 UTSW 2 160,562,921 (GRCm39) missense probably damaging 0.99
R9133:Top1 UTSW 2 160,545,591 (GRCm39) nonsense probably null
R9799:Top1 UTSW 2 160,563,406 (GRCm39) missense probably damaging 1.00
X0027:Top1 UTSW 2 160,563,438 (GRCm39) nonsense probably null
Predicted Primers PCR Primer
(F):5'- TTTTGTGCACCAGAAAGCTC -3'
(R):5'- TAGGACAACTGGCTCAGCTCTC -3'

Sequencing Primer
(F):5'- AAAGCTCTGGACCCCTGCTATG -3'
(R):5'- AACTGGCTCAGCTCTCCCTTATAG -3'
Posted On 2021-07-15