Incidental Mutation 'R3801:Top1'
ID 272961
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 040760-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R3801 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 160544688 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Histidine to Arginine at position 268 (H268R)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: H268R

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: H268R

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: ENSMUST00000164510
Meta Mutation Damage Score 0.3499 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 95.0%
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: 66 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700011L22Rik C T 8: 79,974,922 (GRCm39) E54K probably benign Het
Als2 A C 1: 59,206,358 (GRCm39) M1634R probably damaging Het
Ankfy1 T C 11: 72,640,246 (GRCm39) S531P probably benign Het
Atp6v1e1 A G 6: 120,778,020 (GRCm39) Y172H probably benign Het
Brd1 C T 15: 88,601,243 (GRCm39) V464M probably damaging Het
Btaf1 A T 19: 36,963,948 (GRCm39) T840S probably benign Het
Btaf1 A T 19: 36,966,373 (GRCm39) H1047L probably benign Het
Cacnb2 A G 2: 14,829,074 (GRCm39) D3G possibly damaging Het
Capn13 G A 17: 73,646,396 (GRCm39) P339L probably benign Het
Cgrrf1 G T 14: 47,069,820 (GRCm39) G30C probably damaging Het
Crnkl1 T C 2: 145,761,715 (GRCm39) D614G probably benign Het
Cyp2c23 C T 19: 43,995,478 (GRCm39) V430I probably benign Het
Dazl G A 17: 50,588,309 (GRCm39) R289W probably benign Het
Dsg1b C T 18: 20,523,260 (GRCm39) P96S probably damaging Het
Dusp14 A G 11: 83,939,535 (GRCm39) S169P possibly damaging Het
Egfem1 A G 3: 29,206,075 (GRCm39) D91G probably benign Het
Eif1 A G 11: 100,211,650 (GRCm39) K95E probably damaging Het
Fap C T 2: 62,376,994 (GRCm39) V191I probably benign Het
Flnc T C 6: 29,447,403 (GRCm39) Y1069H probably damaging Het
Fndc7 T C 3: 108,776,464 (GRCm39) T526A possibly damaging Het
Fras1 A T 5: 96,881,791 (GRCm39) T2508S probably benign Het
Gast T C 11: 100,227,636 (GRCm39) S73P probably damaging Het
Grap2 A G 15: 80,507,947 (GRCm39) T4A possibly damaging Het
Grm8 T G 6: 28,125,635 (GRCm39) N164H possibly damaging Het
Hyal5 A T 6: 24,876,523 (GRCm39) H132L probably benign Het
Iqcm C A 8: 76,396,021 (GRCm39) T188K possibly damaging Het
Kank4 A G 4: 98,668,370 (GRCm39) S26P probably damaging Het
Lipo3 C T 19: 33,762,257 (GRCm39) C80Y probably damaging Het
Lrrk2 A G 15: 91,621,314 (GRCm39) R963G probably benign Het
Lrtm2 G A 6: 119,294,444 (GRCm39) T229I probably damaging Het
Mb21d2 A T 16: 28,646,755 (GRCm39) D406E possibly damaging Het
Meikin T A 11: 54,290,697 (GRCm39) probably null Het
Mybl1 A T 1: 9,743,439 (GRCm39) F538I probably damaging Het
Nectin2 T C 7: 19,451,561 (GRCm39) D491G probably benign Het
Nf1 A G 11: 79,450,347 (GRCm39) D511G probably null Het
Nid2 T C 14: 19,860,065 (GRCm39) C1328R probably damaging Het
Nlrp1a T A 11: 71,013,529 (GRCm39) M574L probably benign Het
Nrap C T 19: 56,310,211 (GRCm39) D1595N probably damaging Het
Nrg3 G A 14: 38,098,391 (GRCm39) P496S probably damaging Het
Or4k41 A T 2: 111,279,910 (GRCm39) I142F probably benign Het
Pak3 G A X: 142,492,727 (GRCm39) V87I probably damaging Het
Phf8 T C X: 150,355,572 (GRCm39) S512P possibly damaging Het
Phkb G T 8: 86,648,858 (GRCm39) E225* probably null Het
Plaa T C 4: 94,458,125 (GRCm39) D615G probably damaging Het
Prdm12 A G 2: 31,541,959 (GRCm39) K223E probably damaging Het
Prkd1 C A 12: 50,430,205 (GRCm39) R634L possibly damaging Het
Rassf3 T A 10: 121,250,271 (GRCm39) I181F possibly damaging Het
Samd8 G A 14: 21,825,133 (GRCm39) V30M probably damaging Het
Sema4f A T 6: 82,895,608 (GRCm39) H308Q possibly damaging Het
Skint4 G T 4: 111,975,378 (GRCm39) V113L probably damaging Het
Slc16a10 G C 10: 39,932,620 (GRCm39) H314D possibly damaging Het
Slpi A G 2: 164,198,158 (GRCm39) L12P probably damaging Het
Smco1 A G 16: 32,092,716 (GRCm39) Y129C probably benign Het
Spag17 A G 3: 99,961,169 (GRCm39) K985R possibly damaging Het
Stc1 T C 14: 69,275,924 (GRCm39) I239T probably benign Het
Suclg2 A T 6: 95,474,649 (GRCm39) I372N probably damaging Het
Tmed4 C A 11: 6,224,233 (GRCm39) V80F probably damaging Het
Tnpo2 T A 8: 85,781,800 (GRCm39) probably null Het
Triobp A T 15: 78,857,900 (GRCm39) Q1167L probably benign Het
Txndc16 G A 14: 45,388,809 (GRCm39) P536L possibly damaging Het
Usp13 C T 3: 32,935,657 (GRCm39) A360V possibly damaging Het
Vhl G A 6: 113,606,423 (GRCm39) V147I probably benign Het
Vldlr A T 19: 27,195,021 (GRCm39) T3S probably damaging Het
Vps54 T A 11: 21,218,832 (GRCm39) D130E probably benign Het
Zfp808 T A 13: 62,319,897 (GRCm39) H375Q probably damaging Het
Zfp87 A T 13: 67,669,334 (GRCm39) N37K 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
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'- AGCAGACCTTTGTACACCTTG -3'
(R):5'- GCAGTCACATGAAAGCTGAG -3'

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