Incidental Mutation 'R4742:Top1'
ID 358119
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 041966-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4742 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation critical splice acceptor site
DNA Base Change (assembly) A to G at 160545490 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably null
Transcript: ENSMUST00000109468
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544

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
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.5%
  • 10x: 96.8%
  • 20x: 93.9%
Validation Efficiency 94% (51/54)
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: 47 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
8030423J24Rik G T 13: 71,031,644 (GRCm39) R17L unknown Het
Acan T C 7: 78,750,517 (GRCm39) F1763L probably benign Het
Adgrb1 T A 15: 74,401,328 (GRCm39) L108* probably null Het
Anapc2 T A 2: 25,163,555 (GRCm39) probably null Het
Apbb1ip A G 2: 22,716,928 (GRCm39) K177E unknown Het
Azgp1 T A 5: 137,987,888 (GRCm39) Y223* probably null Het
Cfap44 T G 16: 44,269,615 (GRCm39) probably null Het
Chfr C T 5: 110,291,464 (GRCm39) T94I probably benign Het
Chrna10 T G 7: 101,762,344 (GRCm39) Q282P probably damaging Het
Col9a3 G T 2: 180,245,180 (GRCm39) G130W unknown Het
Dcaf1 A G 9: 106,735,754 (GRCm39) T901A probably benign Het
Dock2 T G 11: 34,244,170 (GRCm39) probably null Het
Dysf C A 6: 84,074,697 (GRCm39) D499E probably damaging Het
Fdxacb1 A G 9: 50,679,968 (GRCm39) probably benign Het
Fhip1b A G 7: 105,033,518 (GRCm39) V566A probably damaging Het
Il31ra G T 13: 112,660,501 (GRCm39) S615* probably null Het
Itgam C T 7: 127,712,245 (GRCm39) S827F probably damaging Het
Mapkbp1 T A 2: 119,847,299 (GRCm39) V512E probably damaging Het
Myo1c C T 11: 75,560,856 (GRCm39) R770* probably null Het
Nab2 T C 10: 127,498,696 (GRCm39) T458A probably benign Het
Nadsyn1 A G 7: 143,352,367 (GRCm39) probably benign Het
Nek10 A G 14: 14,861,624 (GRCm38) D560G probably null Het
Or2ag13 A T 7: 106,472,635 (GRCm39) N272K probably damaging Het
Or2ak6 A G 11: 58,592,685 (GRCm39) R53G probably benign Het
Or8b46 T C 9: 38,450,952 (GRCm39) S254P probably damaging Het
Pou1f1 C A 16: 65,320,367 (GRCm39) P19T probably benign Het
Prdm9 A T 17: 15,773,783 (GRCm39) D329E probably damaging Het
Prkn T A 17: 11,456,591 (GRCm39) probably null Het
Ptprm A C 17: 67,051,746 (GRCm39) Y962* probably null Het
Rad9a G A 19: 4,250,560 (GRCm39) R85C probably damaging Het
Rhox2c A C X: 36,635,351 (GRCm39) Q4H probably benign Het
Rlig1 T C 10: 100,414,243 (GRCm39) I139V probably benign Het
Rtkn2 A G 10: 67,839,144 (GRCm39) T154A possibly damaging Het
Slitrk3 T C 3: 72,955,898 (GRCm39) D958G probably benign Het
Spata31d1b C A 13: 59,864,426 (GRCm39) H525N probably damaging Het
Tacc2 A G 7: 130,227,697 (GRCm39) R1461G probably benign Het
Tas2r105 G A 6: 131,663,814 (GRCm39) H205Y probably damaging Het
Tenm4 A G 7: 96,446,691 (GRCm39) N809D probably damaging Het
Thoc2l A T 5: 104,666,723 (GRCm39) N415I probably benign Het
Tns1 A G 1: 74,163,449 (GRCm39) probably null Het
Traf3ip2 C T 10: 39,515,256 (GRCm39) P345S possibly damaging Het
Ttn T A 2: 76,585,168 (GRCm39) I22042F probably damaging Het
Txndc9 T C 1: 38,026,765 (GRCm39) D135G possibly damaging Het
Usp3 A G 9: 66,427,959 (GRCm39) Y339H probably damaging Het
Vmn1r5 A T 6: 56,963,236 (GRCm39) K304* probably null Het
Vmn2r92 A G 17: 18,387,119 (GRCm39) T153A probably benign Het
Xkr5 A T 8: 18,998,746 (GRCm39) *55K probably null 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
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'- AGCAGATTAGTGTGCATGGG -3'
(R):5'- GAATTCACTGTTGTGTCACAAGAAGC -3'

Sequencing Primer
(F):5'- TGTGCATGGGAATAAGAAAGTATTTC -3'
(R):5'- ATCTGTTTCCGAGCTTCTG -3'
Posted On 2015-11-11