Incidental Mutation 'R7461:Top1'
ID 605513
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 045535-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R7461 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation splice site (54 bp from exon)
DNA Base Change (assembly) A to T at 160554762 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
Meta Mutation Damage Score 0.9755 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.7%
  • 20x: 99.2%
Validation Efficiency 100% (53/53)
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: 53 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acta2 G A 19: 34,229,931 (GRCm39) T8I probably benign Het
Adgrb2 CTATA CTATATA 4: 129,915,006 (GRCm39) probably benign Het
Akt2 A G 7: 27,336,595 (GRCm39) I448V probably benign Het
Anapc5 G A 5: 122,956,928 (GRCm39) T117M probably damaging Het
Arhgap10 T C 8: 78,115,326 (GRCm39) E358G probably damaging Het
C1qtnf6 T A 15: 78,411,549 (GRCm39) K42N probably benign Het
Cacna1d A T 14: 29,788,120 (GRCm39) D1605E probably benign Het
Cdkl1 T A 12: 69,803,235 (GRCm39) I214L probably benign Het
Celsr2 C T 3: 108,302,956 (GRCm39) G2506R probably damaging Het
Cenpj G A 14: 56,764,501 (GRCm39) R1304* probably null Het
Cfap58 A G 19: 47,970,561 (GRCm39) D593G possibly damaging Het
Crip2 T C 12: 113,107,777 (GRCm39) probably null Het
Crocc2 G T 1: 93,122,311 (GRCm39) A735S possibly damaging Het
Dcc A T 18: 71,439,105 (GRCm39) L1279H probably damaging Het
Dnah2 A G 11: 69,439,816 (GRCm39) probably null Het
Dpp8 C T 9: 64,960,402 (GRCm39) T311M possibly damaging Het
Eps15 T C 4: 109,186,922 (GRCm39) S330P probably damaging Het
Exoc2 C T 13: 31,066,255 (GRCm39) V474I probably benign Het
Fmn1 A G 2: 113,194,416 (GRCm39) T39A unknown Het
Foxn2 T C 17: 88,794,311 (GRCm39) I416T possibly damaging Het
Gbp8 T C 5: 105,178,880 (GRCm39) E145G probably damaging Het
Gjd2 A C 2: 113,841,599 (GRCm39) S293A possibly damaging Het
Gm3676 T A 14: 41,365,233 (GRCm39) I141L probably benign Het
Gm4131 A G 14: 62,718,538 (GRCm39) Y23H possibly damaging Het
Gucy1b1 T A 3: 81,947,054 (GRCm39) D385V possibly damaging Het
Hdac2 T C 10: 36,865,232 (GRCm39) S149P probably damaging Het
Igsf9b A T 9: 27,245,418 (GRCm39) R1128S probably benign Het
Invs A G 4: 48,392,668 (GRCm39) H294R probably damaging Het
Itgbl1 T A 14: 124,065,211 (GRCm39) S122T possibly damaging Het
Kansl3 G A 1: 36,382,876 (GRCm39) S812F probably damaging Het
Kcnt1 A T 2: 25,791,358 (GRCm39) H567L probably benign Het
Klhl30 G T 1: 91,285,130 (GRCm39) V329F possibly damaging Het
Krt33a A G 11: 99,902,765 (GRCm39) I353T probably damaging Het
Lrrc37 G T 11: 103,507,116 (GRCm39) H1617Q unknown Het
Lrrc7 T C 3: 157,892,657 (GRCm39) T331A probably benign Het
Megf10 G T 18: 57,385,925 (GRCm39) V313F probably damaging Het
Myo15a A G 11: 60,395,978 (GRCm39) T1438A Het
Myocd A G 11: 65,109,429 (GRCm39) L114P probably damaging Het
Or5b21 A T 19: 12,839,141 (GRCm39) M1L probably benign Het
Pde4b A G 4: 102,112,503 (GRCm39) E29G probably damaging Het
Por G T 5: 135,758,358 (GRCm39) A112S probably damaging Het
Prkcq T C 2: 11,304,221 (GRCm39) F651S probably damaging Het
Selenoi A G 5: 30,471,926 (GRCm39) I376V possibly damaging Het
Setbp1 A C 18: 78,899,707 (GRCm39) M1320R probably benign Het
Skint6 A T 4: 113,034,243 (GRCm39) probably null Het
Tdrd6 T C 17: 43,938,817 (GRCm39) T744A probably benign Het
Tmem209 C T 6: 30,508,469 (GRCm39) W61* probably null Het
Tmem94 G T 11: 115,677,082 (GRCm39) R118L possibly damaging Het
Tradd T C 8: 105,987,196 (GRCm39) K37E possibly damaging Het
Ttc28 C A 5: 111,371,995 (GRCm39) L846M probably damaging Het
Umodl1 T A 17: 31,207,031 (GRCm39) C807* probably null Het
Upf2 T A 2: 5,978,347 (GRCm39) S404T unknown Het
Wscd1 T C 11: 71,650,799 (GRCm39) L42P possibly 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
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'- GCAGAAGTATGAGACTGCGC -3'
(R):5'- TACTAGTTAACCAGTGGTTTGTGC -3'

Sequencing Primer
(F):5'- CGGCGTCTGAAGAAGTGTG -3'
(R):5'- CTCGTCTACAAAGTGAGTTCCAGG -3'
Posted On 2019-12-09