Incidental Mutation 'R7843:Top1'
ID 606426
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 045897-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R7843 (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 C at 160556176 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 545 (V545A)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect possibly damaging
Transcript: ENSMUST00000109468
AA Change: V545A

PolyPhen 2 Score 0.900 (Sensitivity: 0.82; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: V545A

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: 99.7%
  • 20x: 99.0%
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: 65 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcf1 T C 17: 36,270,135 (GRCm39) D641G possibly damaging Het
Adam1b A T 5: 121,639,500 (GRCm39) I515N probably damaging Het
Adamtsl5 A G 10: 80,178,757 (GRCm39) V207A probably damaging Het
Ampd3 A G 7: 110,390,395 (GRCm39) I143V probably benign Het
Ank3 A T 10: 69,822,788 (GRCm39) T486S probably benign Het
Bcl11a A G 11: 24,114,831 (GRCm39) I725V probably benign Het
Blmh A G 11: 76,837,139 (GRCm39) N29D probably damaging Het
C6 T A 15: 4,837,886 (GRCm39) V832D Het
Ccdc191 T A 16: 43,779,699 (GRCm39) L777M probably damaging Het
Ccdc74a C G 16: 17,464,613 (GRCm39) H45Q Het
Cenpe T A 3: 134,938,720 (GRCm39) Y517* probably null Het
Cep290 G T 10: 100,352,050 (GRCm39) R752L possibly damaging Het
Cers5 A T 15: 99,670,212 (GRCm39) W17R unknown Het
Chpf T C 1: 75,454,931 (GRCm39) probably benign Het
Chst5 C A 8: 112,617,204 (GRCm39) A139S probably benign Het
Cpn1 T A 19: 43,974,597 (GRCm39) D44V probably benign Het
Cstf1 T C 2: 172,219,920 (GRCm39) Y344H probably damaging Het
D7Ertd443e A C 7: 133,950,824 (GRCm39) M283R possibly damaging Het
Dclk1 T A 3: 55,163,298 (GRCm39) V130D probably damaging Het
Dscam C T 16: 96,626,830 (GRCm39) V360M probably damaging Het
Dvl2 A G 11: 69,899,612 (GRCm39) N518S probably benign Het
Eif2ak2 T A 17: 79,176,203 (GRCm39) K231N probably benign Het
Elovl4 T C 9: 83,670,324 (GRCm39) R123G probably damaging Het
Ern2 A G 7: 121,772,931 (GRCm39) V562A probably damaging Het
F13a1 A T 13: 37,209,745 (GRCm39) N73K probably benign Het
Gcc2 C A 10: 58,103,843 (GRCm39) Q90K possibly damaging Het
Gnpda1 A T 18: 38,461,952 (GRCm39) S282T probably benign Het
Gpatch1 G T 7: 34,980,879 (GRCm39) H880Q unknown Het
Haus6 T C 4: 86,504,578 (GRCm39) D471G possibly damaging Het
Hcfc1r1 G T 17: 23,893,630 (GRCm39) E70* probably null Het
Ighv1-54 A G 12: 115,157,483 (GRCm39) W55R probably damaging Het
Jam3 T C 9: 27,017,712 (GRCm39) probably null Het
Klhdc7a A T 4: 139,694,155 (GRCm39) V264E possibly damaging Het
Lrrc4c A T 2: 97,460,558 (GRCm39) T395S probably benign Het
Man2a2 G C 7: 80,018,613 (GRCm39) A82G probably benign Het
Mast2 G T 4: 116,210,208 (GRCm39) T186K probably damaging Het
Meig1 T A 2: 3,410,248 (GRCm39) K84M probably damaging Het
Mep1b G T 18: 21,228,110 (GRCm39) S571I probably damaging Het
Muc2 T G 7: 141,281,662 (GRCm39) V507G probably benign Het
Nkx2-3 C A 19: 43,603,321 (GRCm39) T309N probably benign Het
Oaf G A 9: 43,134,077 (GRCm39) R215C probably damaging Het
Or1ad1 A T 11: 50,875,845 (GRCm39) T106S probably benign Het
Or5b109 A T 19: 13,211,901 (GRCm39) N96Y possibly damaging Het
Or8b1c T C 9: 38,384,243 (GRCm39) S67P probably damaging Het
Pla2r1 T G 2: 60,277,819 (GRCm39) T835P possibly damaging Het
Ppil6 C T 10: 41,377,862 (GRCm39) T191I probably benign Het
Rps6ka5 T C 12: 100,519,408 (GRCm39) D735G possibly damaging Het
Setx T A 2: 29,063,581 (GRCm39) N2292K probably damaging Het
Slc1a6 A T 10: 78,632,094 (GRCm39) I307F probably damaging Het
Slc5a3 T A 16: 91,875,907 (GRCm39) W655R probably benign Het
Slc9a1 T C 4: 133,097,753 (GRCm39) probably benign Het
Sptbn1 A G 11: 30,104,320 (GRCm39) V128A probably damaging Het
Tenm3 T A 8: 48,682,146 (GRCm39) K2495* probably null Het
Tnni3k T A 3: 154,744,161 (GRCm39) T64S probably damaging Het
Trabd A G 15: 88,966,157 (GRCm39) D38G possibly damaging Het
Tsbp1 C T 17: 34,668,798 (GRCm39) T176I possibly damaging Het
Umad1 G A 6: 8,401,140 (GRCm39) D70N unknown Het
Usp36 T C 11: 118,176,791 (GRCm39) E9G probably damaging Het
Vmn2r53 A G 7: 12,316,026 (GRCm39) S598P probably damaging Het
Vmn2r60 A T 7: 41,844,511 (GRCm39) T625S probably benign Het
Vmn2r72 G A 7: 85,398,838 (GRCm39) T505I probably benign Het
Vwce T A 19: 10,641,647 (GRCm39) I791K probably benign Het
Wdr64 C A 1: 175,639,668 (GRCm39) H1046N probably benign Het
Zdhhc4 A T 5: 143,306,031 (GRCm39) D232E probably damaging Het
Zfp984 A T 4: 147,842,165 (GRCm39) F51I 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
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'- CTCTGAGAGCAGGCAATGAG -3'
(R):5'- TAAACTGCTTCCAGAGATGGC -3'

Sequencing Primer
(F):5'- TGAGAGCAGGCAATGAGAAGGAAG -3'
(R):5'- AGGTTCCCAGCAATGTAGC -3'
Posted On 2019-12-20