Incidental Mutation 'R7855:Top1'
ID 607172
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 045908-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R7855 (G1)
Quality Score 225.009
Status Not validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 160556008 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Leucine to Glutamine at position 489 (L489Q)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: L489Q

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: L489Q

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
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 98.9%
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: 55 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca6 A T 11: 110,082,454 (GRCm39) V1173D probably benign Het
Ace A T 11: 105,863,205 (GRCm39) M327L probably benign Het
Bcl2l2 C T 14: 55,121,836 (GRCm39) probably benign Het
Bicdl2 C T 17: 23,884,991 (GRCm39) Q231* probably null Het
Brms1l A T 12: 55,912,838 (GRCm39) D277V possibly damaging Het
Cd38 C A 5: 44,058,790 (GRCm39) L135M probably damaging Het
Col6a3 G T 1: 90,738,343 (GRCm39) P1059T possibly damaging Het
Coro1c A T 5: 113,986,658 (GRCm39) M262K probably benign Het
Cpxm2 G T 7: 131,659,424 (GRCm39) P481Q possibly damaging Het
Dipk1c G A 18: 84,748,171 (GRCm39) probably benign Het
Dnah12 G T 14: 26,551,286 (GRCm39) V2543F probably benign Het
Dock2 A C 11: 34,223,698 (GRCm39) D1145E probably damaging Het
Elf3 G A 1: 135,182,090 (GRCm39) R364W probably damaging Het
Eln AGGGACACCAGCACCAGCCCCAAATCCGGGGACACCAGCACCAGCCCCAAATCCGGGGACACCAGCACCAGCCCCAAATCCGGGGACACCAGCACCAGCCCCAAATCCAGGGACACCAGC AGGGACACCAGCACCAGCCCCAAATCCGGGGACACCAGCACCAGCCCCAAATCCGGGGACACCAGCACCAGCCCCAAATCCAGGGACACCAGC 5: 134,739,935 (GRCm39) probably benign Het
Epha3 A G 16: 63,593,923 (GRCm39) I55T probably damaging Het
Gfer C A 17: 24,913,259 (GRCm39) D198Y probably damaging Het
Gm11568 A T 11: 99,749,010 (GRCm39) T72S unknown Het
Igkv3-1 C T 6: 70,681,053 (GRCm39) A84V probably benign Het
Il1rl2 A C 1: 40,382,279 (GRCm39) Y197S probably damaging Het
Il2ra T C 2: 11,685,147 (GRCm39) I161T possibly damaging Het
Itgb8 C T 12: 119,130,507 (GRCm39) R667H probably benign Het
Kcnh7 G A 2: 62,667,538 (GRCm39) Q334* probably null Het
Lctl A C 9: 64,040,498 (GRCm39) R480S possibly damaging Het
Lrba T G 3: 86,222,737 (GRCm39) I617S possibly damaging Het
Marf1 G T 16: 13,932,065 (GRCm39) H1651N probably benign Het
Mitf T A 6: 97,970,157 (GRCm39) Y142N probably damaging Het
Or51v14 T A 7: 103,260,979 (GRCm39) I194F possibly damaging Het
Or52r1 A G 7: 102,536,835 (GRCm39) V175A probably benign Het
Pecam1 A G 11: 106,562,576 (GRCm39) V708A probably benign Het
Pinlyp C T 7: 24,241,865 (GRCm39) probably null Het
Polh G A 17: 46,486,174 (GRCm39) R382W probably damaging Het
Pramel51 A T 12: 88,142,853 (GRCm39) I450N probably benign Het
Prdm10 A G 9: 31,238,770 (GRCm39) I221V probably benign Het
Pskh1 G T 8: 106,639,722 (GRCm39) R134L probably benign Het
Ptpre A G 7: 135,253,724 (GRCm39) N6D probably benign Het
Rasgrp4 C T 7: 28,850,035 (GRCm39) P58L unknown Het
Rhbdf2 G T 11: 116,493,066 (GRCm39) C393* probably null Het
Rlf T C 4: 121,039,888 (GRCm39) I174M possibly damaging Het
Ryr2 T A 13: 11,721,509 (GRCm39) R2641* probably null Het
Semp2l1 A C 1: 32,585,114 (GRCm39) I265M probably damaging Het
Simc1 A G 13: 54,672,645 (GRCm39) H331R probably benign Het
Skp2 A G 15: 9,122,328 (GRCm39) S256P probably benign Het
Smarcd2 T C 11: 106,158,392 (GRCm39) R10G probably benign Het
Spef2 A G 15: 9,687,981 (GRCm39) L480P possibly damaging Het
Tenm4 A G 7: 96,523,081 (GRCm39) H1541R probably damaging Het
Ttll13 C T 7: 79,903,845 (GRCm39) H258Y probably damaging Het
Unc80 A G 1: 66,522,508 (GRCm39) R237G possibly damaging Het
Vmn1r55 A G 7: 5,149,623 (GRCm39) F267L probably benign Het
Vmn2r96 T A 17: 18,818,130 (GRCm39) M761K possibly damaging Het
Vps33a G A 5: 123,709,042 (GRCm39) H58Y possibly damaging Het
Zfp1002 C T 2: 150,097,066 (GRCm39) R121Q probably benign Het
Zfp354c TCACACTCGGCACA TCACA 11: 50,706,067 (GRCm39) probably benign Het
Zfp467 T C 6: 48,416,115 (GRCm39) Q179R probably damaging Het
Zfp729a A T 13: 67,768,067 (GRCm39) S721T possibly damaging Het
Zfta T A 19: 7,399,621 (GRCm39) I456N probably 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
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
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'- AGAGAAACTTGGGTCTCTGGG -3'
(R):5'- TCGTTTCTCAACTGGGACTTTG -3'

Sequencing Primer
(F):5'- AAGTACACTGTAGCTGTCTTCAGACC -3'
(R):5'- CAACTGGGACTTTGTTATAGTATCTG -3'
Posted On 2019-12-20