Incidental Mutation 'R9240:Top2a'
ID 700704
Institutional Source Beutler Lab
Gene Symbol Top2a
Ensembl Gene ENSMUSG00000020914
Gene Name topoisomerase (DNA) II alpha
Synonyms DNA Topoisomerase II alpha, Top-2
Accession Numbers
Essential gene? Probably essential (E-score: 0.971) question?
Stock # R9240 (G1)
Quality Score 225.009
Status Not validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) T to A at 98901368 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Lysine to Stop codon at position 519 (K519*)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably null
Transcript: ENSMUST00000068031
AA Change: K519*
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: K519*

DomainStartEndE-ValueType
low complexity region 10 21 N/A INTRINSIC
Blast:TOP2c 22 60 3e-12 BLAST
HATPase_c 75 224 1.81e-2 SMART
TOP2c 79 669 N/A SMART
TOP4c 692 1166 3.58e-234 SMART
low complexity region 1192 1202 N/A INTRINSIC
low complexity region 1226 1238 N/A INTRINSIC
low complexity region 1261 1273 N/A INTRINSIC
low complexity region 1291 1306 N/A INTRINSIC
low complexity region 1407 1418 N/A INTRINSIC
Pfam:DTHCT 1425 1518 1.1e-18 PFAM
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.8%
  • 20x: 99.6%
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 nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, alpha, is localized to chromosome 17 and the beta gene is localized to chromosome 3. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia. [provided by RefSeq, Jul 2010]
Allele List at MGI

All alleles(47) : Targeted(1) Gene trapped(46)

Other mutations in this stock
Total: 61 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acsl1 A G 8: 46,966,406 (GRCm39) I187V probably benign Het
Adam7 C A 14: 68,747,208 (GRCm39) V584L probably benign Het
Arsg T A 11: 109,463,093 (GRCm39) V451E probably benign Het
Btbd8 A G 5: 107,600,034 (GRCm39) D175G probably benign Het
Cacnb3 C T 15: 98,540,486 (GRCm39) P338L probably benign Het
Cars1 G T 7: 143,138,533 (GRCm39) P218Q probably benign Het
Ccdc180 T C 4: 45,917,566 (GRCm39) probably null Het
Cdh23 C T 10: 60,215,044 (GRCm39) D1431N probably benign Het
Cenpf A T 1: 189,389,167 (GRCm39) V1555D probably benign Het
Creb3l2 T C 6: 37,311,506 (GRCm39) N428D possibly damaging Het
Crebbp A T 16: 3,917,537 (GRCm39) probably null Het
Cstf1 C A 2: 172,217,669 (GRCm39) P94Q probably damaging Het
Dis3l A G 9: 64,217,447 (GRCm39) probably null Het
Dlc1 A T 8: 37,052,005 (GRCm39) D124E probably benign Het
Dpysl3 C T 18: 43,487,867 (GRCm39) V159I probably benign Het
Eea1 T G 10: 95,776,824 (GRCm39) I5S probably benign Het
F7 A T 8: 13,085,173 (GRCm39) T400S probably damaging Het
Fbxo38 C A 18: 62,651,632 (GRCm39) E558* probably null Het
Fcgr2b C T 1: 170,797,042 (GRCm39) probably null Het
Fktn G A 4: 53,734,854 (GRCm39) G125D probably benign Het
Flt1 T C 5: 147,618,676 (GRCm39) N220D probably benign Het
Fzd9 A G 5: 135,278,812 (GRCm39) Y358H probably damaging Het
Gcc2 C T 10: 58,106,398 (GRCm39) Q545* probably null Het
Gkn3 T C 6: 87,365,789 (GRCm39) N10S probably benign Het
Gls C G 1: 52,207,553 (GRCm39) V604L probably benign Het
Gtf2i T A 5: 134,292,619 (GRCm39) Q375L probably benign Het
Hells A G 19: 38,935,289 (GRCm39) M320V possibly damaging Het
Ints3 T C 3: 90,310,410 (GRCm39) S497G possibly damaging Het
Iqub C A 6: 24,505,622 (GRCm39) L95F probably benign Het
Mat1a G A 14: 40,827,573 (GRCm39) C9Y probably benign Het
Mfsd4b5 A G 10: 39,851,099 (GRCm39) L103P probably damaging Het
Ms4a14 T C 19: 11,281,864 (GRCm39) I231M possibly damaging Het
Muc16 T C 9: 18,449,309 (GRCm39) T7580A unknown Het
Myb A T 10: 21,016,500 (GRCm39) L670Q probably damaging Het
Nisch A G 14: 30,906,988 (GRCm39) L236P unknown Het
Or5d38 A C 2: 87,955,231 (GRCm39) F33V probably benign Het
Plscr4 A T 9: 92,366,934 (GRCm39) M183L probably benign Het
Polr1a T A 6: 71,940,661 (GRCm39) C998* probably null Het
Prokr2 A T 2: 132,223,377 (GRCm39) V55E possibly damaging Het
Prr12 A T 7: 44,684,075 (GRCm39) V1655E probably damaging Het
Rsf1 GGCGGCGGC GGCGGCGGCCGCGGCGGC 7: 97,229,119 (GRCm39) probably benign Het
Rspo1 C T 4: 124,885,132 (GRCm39) L3F probably benign Het
Rtn4rl1 C A 11: 75,156,082 (GRCm39) D171E probably damaging Het
Ryr1 A G 7: 28,743,313 (GRCm39) F3895L probably damaging Het
Scn8a G T 15: 100,915,068 (GRCm39) G1211* probably null Het
Slc4a11 C T 2: 130,533,664 (GRCm39) A100T probably damaging Het
Smarcd3 T A 5: 24,801,831 (GRCm39) M103L probably benign Het
Smg1 A T 7: 117,739,031 (GRCm39) S3458T probably benign Het
Smg6 C T 11: 74,825,884 (GRCm39) R738W probably damaging Het
Spef2 G A 15: 9,578,401 (GRCm39) Q1708* probably null Het
Taf2 A T 15: 54,926,464 (GRCm39) V162E probably null Het
Tbc1d23 A T 16: 57,032,748 (GRCm39) N154K possibly damaging Het
Tbx3 A G 5: 119,818,960 (GRCm39) S532G probably benign Het
Tedc1 T C 12: 113,121,310 (GRCm39) I177T probably benign Het
Tnrc6b G C 15: 80,764,262 (GRCm39) G588A probably damaging Het
Trim47 T A 11: 115,999,148 (GRCm39) M243L probably benign Het
Ttn A T 2: 76,641,865 (GRCm39) probably null Het
Uggt1 T C 1: 36,221,696 (GRCm39) E624G possibly damaging Het
Vmn1r43 G A 6: 89,846,877 (GRCm39) T203M probably damaging Het
Vmn2r9 A G 5: 108,996,099 (GRCm39) V183A possibly damaging Het
Zfp212 T A 6: 47,906,032 (GRCm39) V197E probably benign Het
Other mutations in Top2a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00518:Top2a APN 11 98,909,647 (GRCm39) nonsense probably null
IGL01285:Top2a APN 11 98,896,985 (GRCm39) splice site probably benign
IGL01445:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01451:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01456:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01458:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01481:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01485:Top2a APN 11 98,901,856 (GRCm39) missense probably damaging 1.00
IGL01753:Top2a APN 11 98,898,100 (GRCm39) missense probably damaging 0.97
IGL03029:Top2a APN 11 98,909,625 (GRCm39) missense probably benign 0.03
PIT4581001:Top2a UTSW 11 98,893,790 (GRCm39) missense probably damaging 0.97
PIT4585001:Top2a UTSW 11 98,892,199 (GRCm39) missense probably benign 0.02
R0008:Top2a UTSW 11 98,893,729 (GRCm39) nonsense probably null
R0047:Top2a UTSW 11 98,888,682 (GRCm39) missense probably benign
R0047:Top2a UTSW 11 98,888,682 (GRCm39) missense probably benign
R0070:Top2a UTSW 11 98,905,886 (GRCm39) critical splice acceptor site probably null
R0070:Top2a UTSW 11 98,905,886 (GRCm39) critical splice acceptor site probably null
R0116:Top2a UTSW 11 98,894,416 (GRCm39) missense probably benign 0.00
R0245:Top2a UTSW 11 98,900,922 (GRCm39) missense probably benign 0.37
R0276:Top2a UTSW 11 98,900,733 (GRCm39) splice site probably benign
R0288:Top2a UTSW 11 98,907,249 (GRCm39) splice site probably benign
R0335:Top2a UTSW 11 98,913,781 (GRCm39) missense probably benign 0.08
R0422:Top2a UTSW 11 98,900,679 (GRCm39) missense probably damaging 1.00
R0546:Top2a UTSW 11 98,890,052 (GRCm39) missense possibly damaging 0.75
R0558:Top2a UTSW 11 98,887,665 (GRCm39) missense probably benign
R0599:Top2a UTSW 11 98,892,243 (GRCm39) missense probably damaging 0.99
R0727:Top2a UTSW 11 98,902,974 (GRCm39) nonsense probably null
R1565:Top2a UTSW 11 98,891,880 (GRCm39) missense probably damaging 0.99
R1674:Top2a UTSW 11 98,900,099 (GRCm39) missense probably damaging 0.96
R1844:Top2a UTSW 11 98,906,895 (GRCm39) missense probably benign 0.06
R1959:Top2a UTSW 11 98,886,803 (GRCm39) splice site probably null
R2124:Top2a UTSW 11 98,895,054 (GRCm39) missense probably benign 0.00
R2128:Top2a UTSW 11 98,900,633 (GRCm39) missense probably damaging 0.97
R3707:Top2a UTSW 11 98,887,651 (GRCm39) missense probably benign 0.13
R4110:Top2a UTSW 11 98,913,786 (GRCm39) missense probably damaging 1.00
R4112:Top2a UTSW 11 98,913,786 (GRCm39) missense probably damaging 1.00
R4423:Top2a UTSW 11 98,892,231 (GRCm39) missense probably benign 0.00
R4425:Top2a UTSW 11 98,892,231 (GRCm39) missense probably benign 0.00
R4914:Top2a UTSW 11 98,893,786 (GRCm39) missense probably damaging 1.00
R4939:Top2a UTSW 11 98,900,918 (GRCm39) missense probably damaging 1.00
R4944:Top2a UTSW 11 98,888,676 (GRCm39) missense probably benign 0.37
R4971:Top2a UTSW 11 98,884,667 (GRCm39) missense probably damaging 1.00
R5362:Top2a UTSW 11 98,909,738 (GRCm39) missense probably damaging 1.00
R5477:Top2a UTSW 11 98,907,306 (GRCm39) nonsense probably null
R5499:Top2a UTSW 11 98,913,202 (GRCm39) missense probably benign 0.20
R5911:Top2a UTSW 11 98,907,291 (GRCm39) missense possibly damaging 0.92
R7126:Top2a UTSW 11 98,905,818 (GRCm39) missense probably benign 0.09
R7131:Top2a UTSW 11 98,895,008 (GRCm39) missense possibly damaging 0.75
R7174:Top2a UTSW 11 98,914,922 (GRCm39) start gained probably benign
R7329:Top2a UTSW 11 98,895,072 (GRCm39) missense possibly damaging 0.57
R7560:Top2a UTSW 11 98,891,663 (GRCm39) missense probably benign
R7563:Top2a UTSW 11 98,907,005 (GRCm39) missense probably damaging 1.00
R7740:Top2a UTSW 11 98,884,640 (GRCm39) missense probably benign 0.34
R7841:Top2a UTSW 11 98,913,176 (GRCm39) missense probably damaging 1.00
R7894:Top2a UTSW 11 98,900,431 (GRCm39) missense probably damaging 1.00
R8122:Top2a UTSW 11 98,889,993 (GRCm39) missense probably benign
R8260:Top2a UTSW 11 98,891,595 (GRCm39) missense probably null 0.87
R8504:Top2a UTSW 11 98,905,567 (GRCm39) missense probably benign
R8550:Top2a UTSW 11 98,886,744 (GRCm39) missense probably benign
R8558:Top2a UTSW 11 98,912,549 (GRCm39) missense probably damaging 1.00
R8693:Top2a UTSW 11 98,900,868 (GRCm39) missense probably damaging 1.00
R8851:Top2a UTSW 11 98,900,677 (GRCm39) missense probably damaging 1.00
R9143:Top2a UTSW 11 98,900,705 (GRCm39) missense probably benign 0.14
R9294:Top2a UTSW 11 98,891,904 (GRCm39) missense probably benign 0.00
R9301:Top2a UTSW 11 98,897,790 (GRCm39) missense probably damaging 0.99
R9383:Top2a UTSW 11 98,901,884 (GRCm39) nonsense probably null
R9450:Top2a UTSW 11 98,894,434 (GRCm39) missense possibly damaging 0.73
R9515:Top2a UTSW 11 98,902,970 (GRCm39) missense probably damaging 0.99
R9655:Top2a UTSW 11 98,905,334 (GRCm39) missense probably damaging 1.00
R9683:Top2a UTSW 11 98,887,683 (GRCm39) missense probably benign 0.21
R9689:Top2a UTSW 11 98,914,883 (GRCm39) missense probably benign 0.01
U24488:Top2a UTSW 11 98,913,252 (GRCm39) missense probably damaging 1.00
X0025:Top2a UTSW 11 98,886,767 (GRCm39) missense probably benign 0.32
Predicted Primers PCR Primer
(F):5'- ATCTTTCCACGGCAGGGAAC -3'
(R):5'- TAGTGCAGGCTCCGTACTTC -3'

Sequencing Primer
(F):5'- TTTCCACGGCAGGGAACTAGTG -3'
(R):5'- TCACTCACTGGCATCTTAGCAGAC -3'
Posted On 2022-02-07