Incidental Mutation 'R1534:Top1'
ID 166808
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 039573-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R1534 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 160556152 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Threonine at position 537 (I537T)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: I537T

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: I537T

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 0.9572 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.4%
  • 10x: 96.7%
  • 20x: 94.0%
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: 52 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adcy10 T C 1: 165,345,881 (GRCm39) I310T probably damaging Het
Adcy5 T C 16: 35,073,629 (GRCm39) V469A possibly damaging Het
Agrn C T 4: 156,261,141 (GRCm39) C652Y probably damaging Het
Ankfn1 C T 11: 89,413,977 (GRCm39) V133M probably damaging Het
Ankrd13c A G 3: 157,706,757 (GRCm39) T448A probably benign Het
Atp8b1 C T 18: 64,678,335 (GRCm39) V854M probably damaging Het
B4galt2 T C 4: 117,734,669 (GRCm39) H233R probably damaging Het
Bpifb5 T G 2: 154,071,419 (GRCm39) Y249D possibly damaging Het
Brd1 T C 15: 88,573,866 (GRCm39) I1078V possibly damaging Het
Celsr3 A G 9: 108,726,083 (GRCm39) E3104G probably damaging Het
Cyp2c69 T A 19: 39,839,593 (GRCm39) K343N probably benign Het
Cyp4f18 T A 8: 72,746,799 (GRCm39) D331V probably damaging Het
D130040H23Rik T C 8: 69,755,378 (GRCm39) V261A possibly damaging Het
Dchs1 T C 7: 105,421,247 (GRCm39) D391G probably damaging Het
Diaph1 A G 18: 38,029,146 (GRCm39) probably null Het
Fat4 T C 3: 38,944,238 (GRCm39) F1044L probably damaging Het
Frrs1 A T 3: 116,672,057 (GRCm39) T52S probably benign Het
Gan G A 8: 117,914,168 (GRCm39) V189I probably benign Het
Hnf1b A G 11: 83,784,409 (GRCm39) probably benign Het
Itgae T C 11: 73,036,431 (GRCm39) I1123T possibly damaging Het
Klra3 G C 6: 130,310,107 (GRCm39) R138G probably benign Het
Lrrc18 A G 14: 32,730,478 (GRCm39) K6E possibly damaging Het
Map2 G A 1: 66,452,339 (GRCm39) V492I probably benign Het
Mtr A T 13: 12,250,430 (GRCm39) probably benign Het
Ncor1 G T 11: 62,269,330 (GRCm39) A689E possibly damaging Het
Or52n2c G A 7: 104,574,621 (GRCm39) L117F possibly damaging Het
Or5w22 T A 2: 87,363,016 (GRCm39) V213D probably damaging Het
Palm T G 10: 79,652,737 (GRCm39) V42G probably damaging Het
Pcm1 G A 8: 41,740,738 (GRCm39) V995I probably benign Het
Pfkp A G 13: 6,669,574 (GRCm39) V215A probably damaging Het
Prkg2 T C 5: 99,142,420 (GRCm39) Y238C probably damaging Het
Prr14 C T 7: 127,073,154 (GRCm39) A167V probably benign Het
Ptprn A C 1: 75,234,587 (GRCm39) probably null Het
Rexo2 A T 9: 48,380,190 (GRCm39) I214N probably damaging Het
Rrbp1 A G 2: 143,830,233 (GRCm39) S645P probably damaging Het
Rsf1 G GACGGCGGCA 7: 97,229,116 (GRCm39) probably benign Het
Satb2 A T 1: 56,987,392 (GRCm39) C64* probably null Het
Sez6 A G 11: 77,853,871 (GRCm39) Y347C probably damaging Het
Sos2 A G 12: 69,663,729 (GRCm39) I585T probably damaging Het
Spg11 G A 2: 121,922,806 (GRCm39) T881M probably damaging Het
Tiam1 A T 16: 89,664,396 (GRCm39) probably null Het
Tlcd5 A G 9: 43,022,923 (GRCm39) W126R probably damaging Het
Trappc6a A G 7: 19,248,138 (GRCm39) S33G probably benign Het
Tspan11 G C 6: 127,926,768 (GRCm39) V239L probably benign Het
Ubr4 T C 4: 139,155,462 (GRCm39) V2190A possibly damaging Het
Usp28 A G 9: 48,896,806 (GRCm39) D9G possibly damaging Het
Uty A G Y: 1,245,440 (GRCm39) V35A probably benign Het
Vmn2r56 A G 7: 12,427,954 (GRCm39) S771P probably benign Het
Wars2 C T 3: 99,124,177 (GRCm39) A346V probably damaging Het
Wdr87-ps G T 7: 29,229,854 (GRCm39) noncoding transcript Het
Zfp142 G T 1: 74,611,247 (GRCm39) N849K probably benign Het
Zfp180 A T 7: 23,800,948 (GRCm39) N66I 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
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
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'- CCTTTCTTGCACAGCTTGCTCTGAG -3'
(R):5'- GGTTCCCAGCAATGTAGCAGAGGT -3'

Sequencing Primer
(F):5'- GCTCTGAGAGCAGGCAATG -3'
(R):5'- GCATGAAATGAGGCACACC -3'
Posted On 2014-04-13