Incidental Mutation 'R0335:Top2a'
ID 65213
Institutional Source Beutler Lab
Gene Symbol Top2a
Ensembl Gene ENSMUSG00000020914
Gene Name topoisomerase (DNA) II alpha
Synonyms DNA Topoisomerase II alpha, Top-2
MMRRC Submission 038544-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R0335 (G1)
Quality Score 157
Status Validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 98913781 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Asparagine to Serine at position 20 (N20S)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably benign
Transcript: ENSMUST00000068031
AA Change: N20S

PolyPhen 2 Score 0.084 (Sensitivity: 0.93; Specificity: 0.85)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: N20S

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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000129777
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139730
Meta Mutation Damage Score 0.0594 question?
Coding Region Coverage
  • 1x: 98.8%
  • 3x: 97.6%
  • 10x: 94.6%
  • 20x: 87.5%
Validation Efficiency 100% (89/89)
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: 88 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamts12 G T 15: 11,311,144 (GRCm39) D1134Y possibly damaging Het
Add3 A G 19: 53,225,259 (GRCm39) T460A probably benign Het
Amer3 A C 1: 34,618,381 (GRCm39) probably benign Het
Arhgap22 C T 14: 33,081,065 (GRCm39) probably benign Het
Arhgap32 T G 9: 32,171,056 (GRCm39) S1279A probably benign Het
Bcas1 G A 2: 170,260,601 (GRCm39) T26M probably damaging Het
Begain A T 12: 109,004,860 (GRCm39) F256I probably damaging Het
Bltp1 T C 3: 37,023,301 (GRCm39) V2210A probably damaging Het
Cabin1 A T 10: 75,492,883 (GRCm39) I1804N probably damaging Het
Cad G A 5: 31,231,329 (GRCm39) probably benign Het
Carmil1 G A 13: 24,257,966 (GRCm39) S762L probably damaging Het
Ccdc93 T A 1: 121,420,706 (GRCm39) L529Q probably damaging Het
Cdh12 T A 15: 21,578,635 (GRCm39) probably null Het
Cep15 A G 14: 12,301,266 (GRCm38) E124G possibly damaging Het
Clip2 T A 5: 134,564,069 (GRCm39) probably benign Het
Cmip T C 8: 118,172,105 (GRCm39) I480T probably damaging Het
Cnot1 A T 8: 96,498,628 (GRCm39) I203K probably benign Het
Col18a1 G A 10: 76,895,197 (GRCm39) P1155S probably damaging Het
Col1a2 T A 6: 4,531,956 (GRCm39) probably benign Het
Crybg3 A T 16: 59,364,503 (GRCm39) L2373Q probably damaging Het
D130043K22Rik A T 13: 25,071,860 (GRCm39) I935F probably damaging Het
Dapl1 T A 2: 59,326,938 (GRCm39) D61E possibly damaging Het
Def6 A G 17: 28,447,043 (GRCm39) D558G possibly damaging Het
Dnah6 T C 6: 73,046,382 (GRCm39) probably benign Het
Dvl2 G A 11: 69,891,861 (GRCm39) probably benign Het
Ecd A C 14: 20,370,802 (GRCm39) V639G probably benign Het
Epg5 C T 18: 78,029,687 (GRCm39) T1350M probably benign Het
Erbb4 C A 1: 68,298,418 (GRCm39) M657I probably benign Het
Evi5 T C 5: 107,960,277 (GRCm39) R431G probably benign Het
Fbxo11 G A 17: 88,323,041 (GRCm39) A115V possibly damaging Het
Fgfr2 T C 7: 129,797,979 (GRCm39) T192A probably benign Het
Gas7 C T 11: 67,552,878 (GRCm39) A146V possibly damaging Het
Gatad2b T A 3: 90,263,489 (GRCm39) S529T probably benign Het
Gm10722 G T 9: 3,001,048 (GRCm39) Q41H probably null Het
Gm10801 G C 2: 98,494,352 (GRCm39) R143T possibly damaging Het
Gm7535 A G 17: 18,131,374 (GRCm39) probably benign Het
Gstm1 T A 3: 107,920,012 (GRCm39) N193I possibly damaging Het
Heatr5b G A 17: 79,135,375 (GRCm39) P252L probably benign Het
Hmgb1 A G 5: 148,987,441 (GRCm39) V36A probably benign Het
Hrh1 G T 6: 114,457,193 (GRCm39) W158L probably damaging Het
Ighv6-4 T C 12: 114,370,294 (GRCm39) M53V probably benign Het
Iqgap2 T A 13: 95,772,141 (GRCm39) D1346V probably damaging Het
Kcng3 A T 17: 83,895,166 (GRCm39) N433K possibly damaging Het
Kif1a T A 1: 92,980,288 (GRCm39) probably benign Het
Lctl C A 9: 64,026,169 (GRCm39) Q75K probably benign Het
Ldb3 T A 14: 34,300,608 (GRCm39) I89F possibly damaging Het
Lrrc49 A T 9: 60,584,378 (GRCm39) L156Q probably damaging Het
Mark2 G T 19: 7,259,193 (GRCm39) T83K probably benign Het
Ms4a15 A T 19: 10,957,574 (GRCm39) D170E probably damaging Het
Msantd2 A G 9: 37,434,056 (GRCm39) S99G possibly damaging Het
Nemf G T 12: 69,400,577 (GRCm39) T124N probably benign Het
Nlrp9c A T 7: 26,093,561 (GRCm39) F35I possibly damaging Het
Nwd2 A G 5: 63,962,116 (GRCm39) I567V probably benign Het
Optn C T 2: 5,028,926 (GRCm39) G526R probably damaging Het
Or11l3 T C 11: 58,516,566 (GRCm39) Y102C probably damaging Het
Or13p8 A G 4: 118,584,367 (GRCm39) I308V probably null Het
Or5v1b A C 17: 37,841,533 (GRCm39) I222L probably benign Het
Or7g16 T A 9: 18,727,290 (GRCm39) Q100L probably damaging Het
Pdk4 T C 6: 5,491,138 (GRCm39) E209G probably benign Het
Plch1 T C 3: 63,618,399 (GRCm39) Q712R probably damaging Het
Pnpla1 T A 17: 29,105,852 (GRCm39) V569E possibly damaging Het
Prkar2a A T 9: 108,596,457 (GRCm39) D134V probably damaging Het
Ptov1 T A 7: 44,514,046 (GRCm39) Q40L possibly damaging Het
Ptprq T C 10: 107,544,589 (GRCm39) I314V probably benign Het
Rabl2 T C 15: 89,468,169 (GRCm39) K66E probably damaging Het
Rnf38 A G 4: 44,152,507 (GRCm39) V19A possibly damaging Het
Scn2a T A 2: 65,512,435 (GRCm39) W191R probably damaging Het
Sec22b T A 3: 97,828,572 (GRCm39) F212I possibly damaging Het
Sec24c T A 14: 20,738,783 (GRCm39) probably null Het
Septin2 T C 1: 93,423,321 (GRCm39) S51P probably damaging Het
Serpinb1a T C 13: 33,032,639 (GRCm39) N90S probably damaging Het
Slc1a2 C T 2: 102,574,208 (GRCm39) T206I probably benign Het
Slc25a19 C A 11: 115,515,032 (GRCm39) R42L probably damaging Het
St14 G A 9: 31,002,620 (GRCm39) probably benign Het
Stxbp1 C T 2: 32,692,917 (GRCm39) probably benign Het
Tas2r131 C T 6: 132,934,792 (GRCm39) V6I probably benign Het
Tdo2 T A 3: 81,871,307 (GRCm39) M235L probably benign Het
Tenm3 T G 8: 48,685,140 (GRCm39) H2432P probably damaging Het
Tmprss15 C T 16: 78,821,630 (GRCm39) probably benign Het
Tmx1 A G 12: 70,500,030 (GRCm39) N30D probably benign Het
Tom1 A G 8: 75,791,020 (GRCm39) probably null Het
Ttc23l T A 15: 10,540,049 (GRCm39) T145S probably benign Het
Unc13b T A 4: 43,236,983 (GRCm39) M3351K possibly damaging Het
Vmn1r47 T C 6: 89,999,641 (GRCm39) S258P probably damaging Het
Vmn2r8 T G 5: 108,945,317 (GRCm39) probably null Het
Vps11 T C 9: 44,265,135 (GRCm39) Q641R probably null Het
Wapl T A 14: 34,414,281 (GRCm39) I381N probably damaging Het
Zmym6 G A 4: 127,016,601 (GRCm39) G794E probably damaging 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
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
R9240:Top2a UTSW 11 98,901,368 (GRCm39) nonsense probably null
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'- AAGCAAGCGCACTTTGCTAGTTTGG -3'
(R):5'- CATCTGTAATCGGCACGAGCCTATG -3'

Sequencing Primer
(F):5'- CGCACTTTGCTAGTTTGGTTTTAC -3'
(R):5'- cagagactgaggcaagagg -3'
Posted On 2013-08-08