Incidental Mutation 'R3769:Top1'
ID 273154
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 040746-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R3769 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 160563442 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Phenylalanine at position 758 (I758F)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: I758F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: I758F

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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000150039
Meta Mutation Damage Score 0.1204 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.5%
  • 10x: 97.0%
  • 20x: 94.4%
Validation Efficiency 98% (47/48)
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: 45 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Apol9a G C 15: 77,288,596 (GRCm39) T257S probably benign Het
Arhgap23 A T 11: 97,366,932 (GRCm39) D1071V probably damaging Het
C3 C T 17: 57,512,303 (GRCm39) D1542N possibly damaging Het
Ccer1 G A 10: 97,530,414 (GRCm39) G359E probably damaging Het
Cdkal1 T C 13: 29,736,386 (GRCm39) probably null Het
Celf1 T C 2: 90,828,993 (GRCm39) V20A probably damaging Het
Cep350 G A 1: 155,828,950 (GRCm39) T318I probably damaging Het
Chn2 A G 6: 54,267,396 (GRCm39) D159G probably damaging Het
Chst5 T A 8: 112,616,513 (GRCm39) D369V possibly damaging Het
Cmya5 A T 13: 93,233,201 (GRCm39) I629K possibly damaging Het
Cplx4 T C 18: 66,102,998 (GRCm39) T41A probably benign Het
Ddx3x T C X: 13,156,808 (GRCm39) probably benign Het
Dock7 T C 4: 98,859,066 (GRCm39) T1409A probably benign Het
Dpy19l4 T C 4: 11,276,868 (GRCm39) probably null Het
Fgf10 G T 13: 118,918,083 (GRCm39) V124F probably damaging Het
Gm6356 C A 14: 6,971,774 (GRCm38) M120I probably benign Het
Gm7964 T A 7: 83,405,338 (GRCm39) V76D probably damaging Het
Gm826 A G 2: 160,169,165 (GRCm39) V48A unknown Het
Hoxb5 A G 11: 96,194,795 (GRCm39) D119G possibly damaging Het
Ifna7 T C 4: 88,734,964 (GRCm39) V167A probably damaging Het
Itgb2 T C 10: 77,385,802 (GRCm39) V255A possibly damaging Het
Klf3 A G 5: 64,984,560 (GRCm39) probably null Het
Mgl2 T C 11: 70,026,659 (GRCm39) L128P probably damaging Het
Or1ad6 A G 11: 50,860,385 (GRCm39) D180G probably damaging Het
Pdia6 T C 12: 17,320,457 (GRCm39) V32A probably damaging Het
Pex6 G T 17: 47,035,311 (GRCm39) probably null Het
Pla2g5 C G 4: 138,528,746 (GRCm39) C70S probably damaging Het
Pole4 G A 6: 82,599,095 (GRCm39) R119C possibly damaging Het
Polr2c G A 8: 95,586,928 (GRCm39) A65T probably damaging Het
Ptpru C T 4: 131,535,735 (GRCm39) C414Y probably damaging Het
Rhot2 T C 17: 26,059,521 (GRCm39) D407G probably benign Het
Scn5a G A 9: 119,381,142 (GRCm39) probably benign Het
Sh3rf3 A G 10: 58,820,013 (GRCm39) T275A probably benign Het
Slc27a2 A G 2: 126,409,718 (GRCm39) D300G possibly damaging Het
Slc35e1 A T 8: 73,245,714 (GRCm39) I155N possibly damaging Het
Slco1a4 A G 6: 141,785,357 (GRCm39) Y78H probably damaging Het
Snx15 T A 19: 6,173,984 (GRCm39) probably benign Het
U2surp A G 9: 95,375,750 (GRCm39) probably benign Het
Ugcg C T 4: 59,207,798 (GRCm39) P46S probably benign Het
Ulk4 A G 9: 121,092,766 (GRCm39) V157A probably benign Het
Urgcp T C 11: 5,667,000 (GRCm39) Y446C probably damaging Het
Vps51 T C 19: 6,126,378 (GRCm39) T125A possibly damaging Het
Ypel1 T C 16: 16,927,532 (GRCm39) H20R probably benign Het
Zfp458 T A 13: 67,405,546 (GRCm39) I298F probably damaging Het
Zfp747l1 A G 7: 126,984,035 (GRCm39) probably benign 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
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
R8844:Top1 UTSW 2 160,563,469 (GRCm39) missense probably damaging 1.00
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'- CATAGGACAACTGGCTCAGCTC -3'

Sequencing Primer
(F):5'- AAAGCTCTGGACCCCTGCTATG -3'
(R):5'- AACTGGCTCAGCTCTCCCTTATAG -3'
Posted On 2015-03-25