Incidental Mutation 'R1844:Top2a'
ID 207572
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 039869-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R1844 (G1)
Quality Score 225
Status Not validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 98906895 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Threonine to Serine at position 249 (T249S)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably benign
Transcript: ENSMUST00000068031
AA Change: T249S

PolyPhen 2 Score 0.056 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: T249S

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: ENSMUST00000083328
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139730
Coding Region Coverage
  • 1x: 97.5%
  • 3x: 96.9%
  • 10x: 95.2%
  • 20x: 92.1%
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: 93 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aco1 A G 4: 40,197,566 (GRCm39) K857E probably benign Het
Adam20 A G 8: 41,249,080 (GRCm39) N397D probably benign Het
Adgrf3 T G 5: 30,404,211 (GRCm39) D347A probably damaging Het
Ang6 C T 14: 44,239,330 (GRCm39) E133K possibly damaging Het
Arhgap23 T A 11: 97,354,234 (GRCm39) W205R probably damaging Het
Arhgef40 C A 14: 52,235,080 (GRCm39) R1086S probably damaging Het
Atr G T 9: 95,787,870 (GRCm39) A1488S probably benign Het
Cabin1 A T 10: 75,579,184 (GRCm39) probably null Het
Cby2 C T 14: 75,820,850 (GRCm39) V292I probably benign Het
Cdh22 A C 2: 164,985,614 (GRCm39) F324C probably damaging Het
Cep350 T C 1: 155,724,374 (GRCm39) I3075V probably damaging Het
Chd9 A T 8: 91,683,323 (GRCm39) K588* probably null Het
Clns1a A T 7: 97,346,066 (GRCm39) I44F probably damaging Het
Colgalt1 T C 8: 72,063,995 (GRCm39) I51T possibly damaging Het
Cpt2 C T 4: 107,761,452 (GRCm39) E217K possibly damaging Het
Ctss A G 3: 95,454,105 (GRCm39) probably null Het
Cyp1a1 A G 9: 57,609,980 (GRCm39) T465A probably benign Het
Dbn1 A G 13: 55,629,160 (GRCm39) probably null Het
Dennd1b A G 1: 139,018,143 (GRCm39) probably null Het
Dnajc1 A C 2: 18,298,838 (GRCm39) Y49* probably null Het
Dock10 T A 1: 80,520,918 (GRCm39) I1188L probably damaging Het
Dsg1c T G 18: 20,416,096 (GRCm39) probably null Het
Efcab6 G A 15: 83,851,822 (GRCm39) T352I possibly damaging Het
Eps8l3 T C 3: 107,786,902 (GRCm39) L26P possibly damaging Het
Fbxw26 A G 9: 109,553,946 (GRCm39) V231A probably benign Het
Fetub G A 16: 22,754,419 (GRCm39) E209K possibly damaging Het
Galc A T 12: 98,212,556 (GRCm39) probably null Het
Gm6871 A T 7: 41,222,892 (GRCm39) N65K probably benign Het
Gstp3 A G 19: 4,107,540 (GRCm39) I208T probably benign Het
Gtpbp3 A G 8: 71,945,272 (GRCm39) Y448C probably benign Het
Hdac7 G T 15: 97,705,857 (GRCm39) Q385K probably damaging Het
Hemgn C T 4: 46,396,655 (GRCm39) V194M possibly damaging Het
Idh2 G C 7: 79,748,625 (GRCm39) T113R probably benign Het
Jarid2 A C 13: 45,056,219 (GRCm39) K336T possibly damaging Het
Kcnj4 C T 15: 79,369,216 (GRCm39) V255M probably damaging Het
Ldhb C A 6: 142,439,934 (GRCm39) W202L probably damaging Het
Lmbrd2 T A 15: 9,177,838 (GRCm39) Y512* probably null Het
Lrp1 A G 10: 127,431,152 (GRCm39) probably null Het
Map3k12 G A 15: 102,411,970 (GRCm39) P365S probably damaging Het
Map3k5 G A 10: 19,979,909 (GRCm39) D806N probably benign Het
Matn3 A G 12: 9,017,662 (GRCm39) E438G possibly damaging Het
Mcmbp G A 7: 128,325,698 (GRCm39) L97F probably damaging Het
Mmp3 A T 9: 7,453,662 (GRCm39) I428L probably benign Het
Mphosph8 T C 14: 56,934,616 (GRCm39) V855A probably damaging Het
Mycbp2 T A 14: 103,393,150 (GRCm39) H3027L possibly damaging Het
Nbea C T 3: 55,989,857 (GRCm39) R333H probably damaging Het
Notch1 G T 2: 26,350,446 (GRCm39) H2231Q probably benign Het
Npas2 A T 1: 39,364,456 (GRCm39) H266L probably damaging Het
Oas3 A G 5: 120,898,045 (GRCm39) S833P probably damaging Het
Or1j15 T C 2: 36,458,789 (GRCm39) Y60H probably damaging Het
Or5ak24 T C 2: 85,260,265 (GRCm39) T303A probably benign Het
Or5w17 A C 2: 87,584,334 (GRCm39) M1R probably null Het
Or6c65 G A 10: 129,603,725 (GRCm39) R120H probably benign Het
Pak4 C T 7: 28,264,690 (GRCm39) V71I possibly damaging Het
Pitpnm1 T C 19: 4,162,395 (GRCm39) V1075A probably damaging Het
Pkp3 G A 7: 140,668,415 (GRCm39) V555M probably damaging Het
Plekhm2 T C 4: 141,359,685 (GRCm39) T381A probably benign Het
Plppr3 A G 10: 79,702,244 (GRCm39) probably null Het
Ppp2r5e A T 12: 75,516,540 (GRCm39) F216I possibly damaging Het
Ppp3ca T A 3: 136,627,672 (GRCm39) V412D probably benign Het
Prss50 A G 9: 110,687,081 (GRCm39) probably benign Het
Psph A C 5: 129,843,532 (GRCm39) I174R probably damaging Het
Ptov1 A G 7: 44,514,991 (GRCm39) Y207H possibly damaging Het
Ptprs A G 17: 56,741,510 (GRCm39) S585P probably damaging Het
Rnf146 A T 10: 29,223,720 (GRCm39) H55Q probably damaging Het
Rnf213 T A 11: 119,332,009 (GRCm39) M2407K probably damaging Het
Rnls A C 19: 33,179,931 (GRCm39) L55R possibly damaging Het
Rptor T C 11: 119,647,146 (GRCm39) C246R probably damaging Het
Rrp12 C T 19: 41,866,222 (GRCm39) probably null Het
Samd3 A G 10: 26,127,672 (GRCm39) D223G probably damaging Het
Sdad1 G A 5: 92,453,155 (GRCm39) Q68* probably null Het
Selenov G A 7: 27,989,847 (GRCm39) T219M probably damaging Het
Shd A G 17: 56,278,554 (GRCm39) D39G possibly damaging Het
Slc26a10 A T 10: 127,014,279 (GRCm39) V245E probably damaging Het
Slit1 A G 19: 41,614,012 (GRCm39) L820P probably damaging Het
Snap23 T C 2: 120,421,163 (GRCm39) F96L probably benign Het
Speer1k T C 5: 10,998,994 (GRCm39) probably benign Het
Spef1l A T 7: 139,556,005 (GRCm39) I212N probably benign Het
Stkld1 A G 2: 26,840,115 (GRCm39) H395R probably damaging Het
Syt13 G A 2: 92,771,165 (GRCm39) G84D probably damaging Het
Terb2 T A 2: 122,016,990 (GRCm39) L37Q probably damaging Het
Themis A G 10: 28,657,753 (GRCm39) Y107C probably damaging Het
Tspo2 A T 17: 48,756,148 (GRCm39) F71Y probably damaging Het
Ttc21b T A 2: 66,053,921 (GRCm39) K753* probably null Het
Ttk A G 9: 83,736,915 (GRCm39) Y458C possibly damaging Het
Ttn T C 2: 76,586,017 (GRCm39) R21905G probably damaging Het
Ugt3a1 T A 15: 9,351,254 (GRCm39) F88I probably benign Het
Vmn1r119 A G 7: 20,746,121 (GRCm39) L87P probably damaging Het
Vmn1r36 A G 6: 66,693,747 (GRCm39) F6L probably benign Het
Vmn2r15 T A 5: 109,434,860 (GRCm39) K615* probably null Het
Wdr18 G A 10: 79,802,561 (GRCm39) probably null Het
Wdr6 A T 9: 108,453,176 (GRCm39) W236R probably damaging Het
Zbtb48 T C 4: 152,110,955 (GRCm39) T187A 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
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'- CTGTGTATGTGAAAGAGGGAACG -3'
(R):5'- TAGACGTGGATGGATAACATGGG -3'

Sequencing Primer
(F):5'- GAAGTGGTAGCGCACACCTTTAATC -3'
(R):5'- GGAGAGCTGGTGACATGGAACTC -3'
Posted On 2014-06-23