Incidental Mutation 'R0946:Top1'
ID 82088
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 039085-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0946 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) T to A at 160554588 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Stop codon at position 446 (Y446*)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably null
Transcript: ENSMUST00000109468
AA Change: Y446*
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: Y446*

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
Coding Region Coverage
  • 1x: 99.4%
  • 3x: 98.9%
  • 10x: 97.5%
  • 20x: 95.2%
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: 47 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
9230112D13Rik A G 14: 34,234,099 (GRCm39) M64T unknown Het
Adamts15 C T 9: 30,813,493 (GRCm39) G891R probably damaging Het
Adck5 G A 15: 76,477,486 (GRCm39) V107I possibly damaging Het
Aoc3 G A 11: 101,223,131 (GRCm39) V456M possibly damaging Het
Apbb1 A T 7: 105,223,062 (GRCm39) L183Q probably benign Het
Camsap3 A G 8: 3,654,442 (GRCm39) H693R probably benign Het
Ccdc88a A G 11: 29,406,509 (GRCm39) T414A probably benign Het
Cdh17 T C 4: 11,795,581 (GRCm39) V387A probably benign Het
Coasy G T 11: 100,976,696 (GRCm39) V489F probably damaging Het
Ercc6 A T 14: 32,274,578 (GRCm39) M574L probably benign Het
Esrrb T C 12: 86,552,598 (GRCm39) L180P probably damaging Het
Fam83b A T 9: 76,398,679 (GRCm39) V808D probably damaging Het
Fat3 C T 9: 15,909,100 (GRCm39) V2301I possibly damaging Het
Ftdc1 C A 16: 58,435,075 (GRCm39) R83S probably damaging Het
Hyal4 T A 6: 24,755,912 (GRCm39) Y43* probably null Het
Hydin C A 8: 111,257,685 (GRCm39) L2372M probably benign Het
Lrrc4c T C 2: 97,459,809 (GRCm39) V145A probably benign Het
Lypd10 A G 7: 24,413,167 (GRCm39) K162R probably benign Het
Muc21 A C 17: 35,929,105 (GRCm39) S1581A probably benign Het
Myh4 A G 11: 67,142,577 (GRCm39) I913V possibly damaging Het
Nat10 C T 2: 103,561,719 (GRCm39) G654D probably damaging Het
Nbn A T 4: 15,970,719 (GRCm39) probably null Het
Nup50l A T 6: 96,142,677 (GRCm39) N122K possibly damaging Het
Oas3 T C 5: 120,907,128 (GRCm39) Y503C unknown Het
Or11g7 C A 14: 50,691,130 (GRCm39) T207K probably benign Het
Pappa G T 4: 65,233,029 (GRCm39) probably null Het
Pfas A G 11: 68,884,121 (GRCm39) probably null Het
Pfas G T 11: 68,881,573 (GRCm39) probably null Het
Pign A T 1: 105,519,422 (GRCm39) M500K probably benign Het
Pkhd1 T C 1: 20,269,605 (GRCm39) K3313R probably benign Het
Ptk2b A G 14: 66,396,047 (GRCm39) V807A probably benign Het
Ptpdc1 C T 13: 48,740,286 (GRCm39) E382K probably damaging Het
Rfpl4b A T 10: 38,696,833 (GRCm39) I256N probably benign Het
Skap1 C G 11: 96,432,295 (GRCm39) S88* probably null Het
Slc4a2 T C 5: 24,640,884 (GRCm39) S742P probably damaging Het
Supv3l1 T C 10: 62,265,599 (GRCm39) D647G probably damaging Het
Tmem184c A C 8: 78,331,386 (GRCm39) V121G probably damaging Het
Tonsl T C 15: 76,507,421 (GRCm39) I118V probably benign Het
Trim37 A G 11: 87,037,781 (GRCm39) R172G probably damaging Het
Vgll4 C A 6: 114,867,768 (GRCm39) probably null Het
Vgll4 T A 6: 114,867,769 (GRCm39) probably null Het
Vmn1r5 T G 6: 56,963,150 (GRCm39) I275S possibly damaging Het
Vwde A T 6: 13,187,874 (GRCm39) H584Q probably damaging Het
Zbtb14 C A 17: 69,695,497 (GRCm39) F398L probably damaging Het
Zfp282 T A 6: 47,856,943 (GRCm39) W59R probably damaging Het
Zfp329 T A 7: 12,545,395 (GRCm39) N43I probably benign Het
Zswim2 T A 2: 83,754,103 (GRCm39) T186S 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
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
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'- TGGTGGATCTCACAAGAGTGGGAAC -3'
(R):5'- AGCCAACATACTGTACATGCCTCTTTC -3'

Sequencing Primer
(F):5'- CTTAGCAATTATACAGGACGGAGTC -3'
(R):5'- GTCACACAGCAGATATACATTCCTG -3'
Posted On 2013-11-08