Incidental Mutation 'R0564:Top1'
ID 46051
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 038755-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0564 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 160556185 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Arginine to Glutamine at position 548 (R548Q)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: R548Q

PolyPhen 2 Score 0.983 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: R548Q

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
Meta Mutation Damage Score 0.1314 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.5%
  • 10x: 96.7%
  • 20x: 93.7%
Validation Efficiency 98% (52/53)
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: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamtsl5 A G 10: 80,180,681 (GRCm39) V127A probably damaging Het
Alox12 T A 11: 70,143,662 (GRCm39) D202V probably damaging Het
Ankib1 A G 5: 3,779,655 (GRCm39) Y405H probably damaging Het
Apbb2 A T 5: 66,609,593 (GRCm39) M18K probably damaging Het
Atad2 C A 15: 57,989,229 (GRCm39) probably benign Het
Birc6 T A 17: 74,932,238 (GRCm39) probably benign Het
Ccdc126 T C 6: 49,311,076 (GRCm39) M28T possibly damaging Het
Cdc16 A T 8: 13,831,618 (GRCm39) D617V probably damaging Het
Cep135 G A 5: 76,763,557 (GRCm39) E516K probably damaging Het
Cep135 G T 5: 76,786,796 (GRCm39) M1081I probably benign Het
Col6a3 A C 1: 90,735,456 (GRCm39) V731G probably damaging Het
Cstdc6 A T 16: 36,143,346 (GRCm39) Y34* probably null Het
Cwc27 C A 13: 104,797,865 (GRCm39) E365* probably null Het
Dip2b C A 15: 100,060,600 (GRCm39) Y258* probably null Het
Dnah17 A G 11: 117,973,807 (GRCm39) V1900A probably damaging Het
Dpysl2 A T 14: 67,042,895 (GRCm39) probably benign Het
Dync2h1 A T 9: 7,139,432 (GRCm39) L1401Q probably damaging Het
Esf1 A T 2: 140,000,506 (GRCm39) Y427N possibly damaging Het
Fbln1 T A 15: 85,111,308 (GRCm39) V154D probably benign Het
Frem2 A G 3: 53,563,530 (GRCm39) F326L probably damaging Het
Gm4922 T A 10: 18,659,813 (GRCm39) N303I possibly damaging Het
H1f6 G T 13: 23,880,307 (GRCm39) K153N possibly damaging Het
Iigp1 G A 18: 60,523,523 (GRCm39) V214M probably damaging Het
Luzp2 A G 7: 54,485,710 (GRCm39) K2E probably damaging Het
Mcc A G 18: 44,601,574 (GRCm39) L410P probably damaging Het
Mfn2 A G 4: 147,967,712 (GRCm39) F452S probably damaging Het
Mib2 C T 4: 155,743,917 (GRCm39) G42S probably damaging Het
Micu2 A G 14: 58,156,831 (GRCm39) F335L possibly damaging Het
Mpp3 T G 11: 101,896,173 (GRCm39) K450T possibly damaging Het
Mtmr4 T A 11: 87,489,714 (GRCm39) V79E probably damaging Het
Nlrp4b A G 7: 10,448,585 (GRCm39) I263V probably benign Het
Or52p2 T C 7: 102,237,738 (GRCm39) I71V probably benign Het
Or6c76 T G 10: 129,612,005 (GRCm39) V74G probably damaging Het
Pdk1 G A 2: 71,710,383 (GRCm39) W113* probably null Het
Phaf1 T A 8: 105,966,603 (GRCm39) probably benign Het
Phxr4 A T 9: 13,342,993 (GRCm39) probably benign Het
Rad51ap2 T A 12: 11,507,897 (GRCm39) H606Q probably benign Het
Ralgapa1 A T 12: 55,829,670 (GRCm39) I187K possibly damaging Het
Rps27 A G 3: 90,120,230 (GRCm39) probably benign Het
Sema3e T A 5: 14,286,099 (GRCm39) probably null Het
Sh2d3c G A 2: 32,643,064 (GRCm39) C749Y probably damaging Het
Siah2 T C 3: 58,583,656 (GRCm39) D210G probably benign Het
Smap2 G A 4: 120,834,174 (GRCm39) P155S probably benign Het
Snrk C T 9: 121,995,610 (GRCm39) T463M possibly damaging Het
Tm9sf3 A G 19: 41,233,964 (GRCm39) probably benign Het
Tmem132d C T 5: 127,861,842 (GRCm39) E760K probably damaging Het
Tmem184c A T 8: 78,332,789 (GRCm39) probably null Het
Tmem235 A T 11: 117,751,674 (GRCm39) I33F possibly damaging Het
Tmem267 A T 13: 119,629,175 (GRCm39) probably null Het
Trio T C 15: 27,805,908 (GRCm39) N527D probably damaging Het
Upf3a A G 8: 13,845,656 (GRCm39) K252E 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
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
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'- TGACTGACCTACCTACCTACCTACCTAC -3'
(R):5'- GCATGAAATGAGGCACACCATATACCAA -3'

Sequencing Primer
(F):5'- gctgagccatctctctagcc -3'
(R):5'- AGGCACACCATATACCAAATATTATC -3'
Posted On 2013-06-11