Incidental Mutation 'R3770:Top1'
ID 273201
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R3770 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 160563442 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Phenylalanine at position 758 (I758F)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: I758F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: I758F

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 0.1204 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 94.8%
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
Acox1 T C 11: 116,065,213 (GRCm39) D578G probably damaging Het
Adgrb1 T A 15: 74,460,157 (GRCm39) I543N probably damaging Het
Agbl1 T C 7: 76,075,677 (GRCm39) probably null Het
Ano1 A G 7: 144,149,306 (GRCm39) Y852H probably damaging Het
Apol9a G C 15: 77,288,596 (GRCm39) T257S probably benign Het
Arhgap23 A T 11: 97,366,932 (GRCm39) D1071V probably damaging Het
Atp1a1 T C 3: 101,488,510 (GRCm39) D842G probably benign Het
Brd7 A T 8: 89,066,035 (GRCm39) probably null Het
Btbd7 G A 12: 102,761,451 (GRCm39) P578L probably damaging Het
C3 C T 17: 57,512,303 (GRCm39) D1542N possibly damaging Het
Cfap54 C T 10: 92,714,398 (GRCm39) M2660I unknown Het
Dock7 T C 4: 98,859,066 (GRCm39) T1409A probably benign Het
Exoc3l4 A G 12: 111,391,989 (GRCm39) D410G probably benign Het
Foxk2 CGGGGGG CGGGGGGGGG 11: 121,151,317 (GRCm39) probably benign Het
Herc2 A G 7: 55,814,755 (GRCm39) I2703V probably benign Het
Ifna7 T C 4: 88,734,964 (GRCm39) V167A probably damaging Het
Iqcg G A 16: 32,870,378 (GRCm39) silent Het
Klf3 A G 5: 64,984,560 (GRCm39) probably null Het
Krtap12-1 G T 10: 77,556,729 (GRCm39) V91L probably benign Het
Lipo5 G T 19: 33,445,200 (GRCm39) T123N unknown Het
Macf1 A G 4: 123,268,560 (GRCm39) S4689P probably damaging Het
Map3k5 T A 10: 19,900,765 (GRCm39) V313D probably damaging Het
Mypn C A 10: 62,961,486 (GRCm39) L1035F possibly damaging Het
Neurl1a T C 19: 47,228,328 (GRCm39) L58P probably damaging Het
Or5aq1 C T 2: 86,966,158 (GRCm39) C169Y probably damaging Het
Pla2g5 C G 4: 138,528,746 (GRCm39) C70S probably damaging Het
Pole4 G A 6: 82,599,095 (GRCm39) R119C possibly damaging Het
Ppm1h G T 10: 122,740,027 (GRCm39) L367F probably damaging Het
Ptpru C T 4: 131,535,735 (GRCm39) C414Y probably damaging Het
Rasal3 A T 17: 32,611,125 (GRCm39) L912Q probably damaging Het
Reln C T 5: 22,153,564 (GRCm39) V2247M probably damaging Het
Rhot2 T C 17: 26,059,521 (GRCm39) D407G probably benign Het
Rreb1 C T 13: 38,113,579 (GRCm39) R313W possibly damaging Het
Rufy4 T C 1: 74,186,822 (GRCm39) C537R probably damaging Het
Scn11a T A 9: 119,613,115 (GRCm39) D825V probably damaging Het
Slc12a3 A G 8: 95,079,668 (GRCm39) H832R probably benign Het
Slc27a2 A G 2: 126,409,718 (GRCm39) D300G possibly damaging Het
Sos1 A G 17: 80,705,737 (GRCm39) V1278A probably damaging Het
Sstr3 C A 15: 78,424,577 (GRCm39) V57L probably damaging Het
Tex2 T A 11: 106,435,078 (GRCm39) R783W unknown Het
Tjp2 A T 19: 24,078,190 (GRCm39) I901N probably benign Het
Trim41 T C 11: 48,699,911 (GRCm39) E98G possibly damaging Het
Vmn2r65 A T 7: 84,589,623 (GRCm39) N764K probably damaging Het
Vmn2r81 A T 10: 79,106,434 (GRCm39) I471F probably damaging Het
Wdr25 G A 12: 108,864,346 (GRCm39) V164M probably damaging Het
Zdhhc13 T A 7: 48,452,692 (GRCm39) L5M probably damaging Het
Zfp747l1 A G 7: 126,984,035 (GRCm39) 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
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
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'- CCTGCTTTCGAGATCTCTGAG -3'
(R):5'- TAGGACAACTGGCTCAGCTC -3'

Sequencing Primer
(F):5'- AAAGCTCTGGACCCCTGCTATG -3'
(R):5'- AACTGGCTCAGCTCTCCCTTATAG -3'
Posted On 2015-03-25