Incidental Mutation 'R8773:Top1'
ID 664522
Institutional Source Beutler Lab
Gene Symbol Top1
Ensembl Gene ENSMUSG00000070544
Gene Name topoisomerase (DNA) I
Synonyms D130064I21Rik, Top-1
MMRRC Submission 068627-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R8773 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 160487901-160564684 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 160556158 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Cysteine at position 539 (Y539C)
Ref Sequence ENSEMBL: ENSMUSP00000105094 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000109468]
AlphaFold Q04750
Predicted Effect probably damaging
Transcript: ENSMUST00000109468
AA Change: Y539C

PolyPhen 2 Score 0.983 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000105094
Gene: ENSMUSG00000070544
AA Change: Y539C

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 0.9690 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.6%
  • 20x: 98.7%
Validation Efficiency 98% (63/64)
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: 65 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4921509C19Rik A T 2: 151,314,062 (GRCm39) S539T possibly damaging Het
Abcc6 C T 7: 45,634,569 (GRCm39) R1136Q probably benign Het
Abhd12b A C 12: 70,213,708 (GRCm39) probably null Het
Agk T G 6: 40,334,050 (GRCm39) V98G possibly damaging Het
Apbb2 A G 5: 66,609,252 (GRCm39) S132P probably damaging Het
Apc2 T C 10: 80,142,046 (GRCm39) S322P probably damaging Het
Armc3 T C 2: 19,293,667 (GRCm39) V486A probably benign Het
Asxl2 A G 12: 3,507,200 (GRCm39) K131E probably damaging Het
Atp13a4 A G 16: 29,260,398 (GRCm39) V560A Het
Bnc1 C T 7: 81,623,719 (GRCm39) G503S probably damaging Het
Bsn C A 9: 107,987,704 (GRCm39) V2683F unknown Het
Btbd7 A T 12: 102,804,241 (GRCm39) N266K probably benign Het
Ccdc121rt2 T C 5: 112,597,681 (GRCm39) V76A probably benign Het
Cdca7l G A 12: 117,839,346 (GRCm39) D350N possibly damaging Het
Cfap251 A G 5: 123,411,913 (GRCm39) D515G probably benign Het
Ciao2a A T 9: 66,045,667 (GRCm39) N145I probably damaging Het
Col6a3 T A 1: 90,696,171 (GRCm39) D3239V unknown Het
Col9a1 T A 1: 24,224,208 (GRCm39) I130N unknown Het
Cr2 A G 1: 194,840,913 (GRCm39) W460R probably damaging Het
Cyb561d2 A G 9: 107,417,583 (GRCm39) F56S probably damaging Het
Dnaaf1 A G 8: 120,302,194 (GRCm39) I32V probably benign Het
Dnah11 T A 12: 117,958,950 (GRCm39) T2978S possibly damaging Het
Dsg2 T A 18: 20,716,056 (GRCm39) D302E probably damaging Het
Faf1 T A 4: 109,699,507 (GRCm39) F351I possibly damaging Het
Gimap8 C A 6: 48,633,545 (GRCm39) Q455K probably benign Het
Hps6 C G 19: 45,994,141 (GRCm39) R693G possibly damaging Het
Irx1 C T 13: 72,107,635 (GRCm39) G349D probably damaging Het
Itga8 C G 2: 12,187,495 (GRCm39) G728A probably damaging Het
Lcat T C 8: 106,666,710 (GRCm39) T271A possibly damaging Het
Mapkapk2 T C 1: 130,983,679 (GRCm39) H308R probably damaging Het
Mast1 A T 8: 85,642,953 (GRCm39) N947K probably damaging Het
Mpeg1 A T 19: 12,440,419 (GRCm39) I626F probably damaging Het
Mrtfa T C 15: 80,902,274 (GRCm39) S349G possibly damaging Het
Myh15 T C 16: 49,015,900 (GRCm39) S1859P possibly damaging Het
Nlrx1 A T 9: 44,167,712 (GRCm39) D728E probably benign Het
Or1j8 A G 2: 36,192,387 (GRCm39) T279A probably benign Het
Or8c19-ps1 G T 9: 38,220,516 (GRCm39) V142F probably benign Het
Pcdhb18 A T 18: 37,624,562 (GRCm39) S631C probably damaging Het
Pcdhga11 C A 18: 37,890,364 (GRCm39) Y457* probably null Het
Pcdhga5 T C 18: 37,829,823 (GRCm39) I757T probably benign Het
Pcgf5 G A 19: 36,389,348 (GRCm39) probably benign Het
Pdf A G 8: 107,775,100 (GRCm39) V44A possibly damaging Het
Pip4p1 T C 14: 51,166,503 (GRCm39) T194A possibly damaging Het
Prtg A T 9: 72,819,583 (GRCm39) *1192L probably null Het
Ptk7 A G 17: 46,877,193 (GRCm39) F955S possibly damaging Het
Rbp3 C A 14: 33,684,492 (GRCm39) Q1174K possibly damaging Het
Rufy1 T C 11: 50,321,796 (GRCm39) D46G possibly damaging Het
Sbf2 A G 7: 109,948,202 (GRCm39) V1216A probably benign Het
Serpina11 A G 12: 103,952,722 (GRCm39) V18A unknown Het
Serpinb6a T A 13: 34,115,543 (GRCm39) N47I probably damaging Het
Shc2 T C 10: 79,456,924 (GRCm39) H564R probably damaging Het
Sirt7 T A 11: 120,514,888 (GRCm39) R115* probably null Het
Slc22a14 A T 9: 119,059,290 (GRCm39) probably benign Het
Stra8 T A 6: 34,912,581 (GRCm39) S331T probably damaging Het
Tm9sf2 A G 14: 122,380,883 (GRCm39) T324A probably benign Het
Tmem268 T C 4: 63,498,530 (GRCm39) S224P probably benign Het
Tns1 T C 1: 73,976,407 (GRCm39) D1147G probably damaging Het
Tomm22 C T 15: 79,555,311 (GRCm39) probably benign Het
Tpp2 T A 1: 44,009,552 (GRCm39) probably benign Het
Trav3-1 T C 14: 52,818,428 (GRCm39) V34A probably damaging Het
Tspyl5 T C 15: 33,687,238 (GRCm39) N236D possibly damaging Het
Ttc41 A G 10: 86,565,679 (GRCm39) D411G probably benign Het
Vmn1r128 A T 7: 21,083,922 (GRCm39) M209L probably benign Het
Xirp2 T A 2: 67,355,527 (GRCm39) D3429E probably benign Het
Zfp418 A T 7: 7,185,797 (GRCm39) T587S 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
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
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'- GTTCATTCCATCTACAAAATTGGGG -3'
(R):5'- GGCATGAAATGAGGCACACC -3'

Sequencing Primer
(F):5'- CCATCTACAAAATTGGGGGCTTCTG -3'
(R):5'- GGCATGAAATGAGGCACACCATATAC -3'
Posted On 2021-03-08