Incidental Mutation 'R7329:Top2a'
ID 569137
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 045422-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R7329 (G1)
Quality Score 225.009
Status Validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 98895072 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Leucine at position 843 (I843L)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect possibly damaging
Transcript: ENSMUST00000068031
AA Change: I843L

PolyPhen 2 Score 0.571 (Sensitivity: 0.88; Specificity: 0.91)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: I843L

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
Meta Mutation Damage Score 0.1712 question?
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.8%
  • 20x: 99.4%
Validation Efficiency 100% (78/78)
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: 79 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Actb T C 5: 142,890,146 (GRCm39) N252S probably benign Het
Adgrb1 C A 15: 74,411,094 (GRCm39) T330K probably damaging Het
Ahnak A G 19: 8,979,156 (GRCm39) T147A probably damaging Het
Ankfy1 T C 11: 72,603,034 (GRCm39) V21A probably damaging Het
Arrdc4 T A 7: 68,390,775 (GRCm39) N322Y probably damaging Het
Bfsp2 C A 9: 103,327,121 (GRCm39) E205D probably benign Het
C2cd4b T A 9: 67,667,419 (GRCm39) S138R possibly damaging Het
Camkk1 C G 11: 72,917,873 (GRCm39) N147K probably damaging Het
Ckap2l T A 2: 129,127,284 (GRCm39) Q298L possibly damaging Het
Clstn2 G T 9: 97,343,422 (GRCm39) A675D probably benign Het
Cntnap2 G A 6: 47,248,205 (GRCm39) V1204M possibly damaging Het
Col4a1 C T 8: 11,276,494 (GRCm39) probably null Het
Ctrc T C 4: 141,571,022 (GRCm39) T73A probably benign Het
Cubn A G 2: 13,473,582 (GRCm39) F454L probably damaging Het
Cuedc1 A T 11: 88,060,692 (GRCm39) S12C unknown Het
Cyb561a3 G T 19: 10,565,268 (GRCm39) G211C probably damaging Het
D5Ertd579e A T 5: 36,773,739 (GRCm39) S219T probably benign Het
Dennd4c T A 4: 86,759,318 (GRCm39) Y1783N probably damaging Het
Dennd4c C T 4: 86,698,111 (GRCm39) P200S possibly damaging Het
Dnah6 G A 6: 73,121,705 (GRCm39) Q1426* probably null Het
Dync2h1 T G 9: 7,011,247 (GRCm39) T3649P probably benign Het
E2f8 T C 7: 48,521,858 (GRCm39) S415G probably damaging Het
Fbxo22 A G 9: 55,122,261 (GRCm39) I147V probably benign Het
Gclc A G 9: 77,683,473 (GRCm39) Y110C probably damaging Het
Gstm5 A G 3: 107,803,647 (GRCm39) T27A possibly damaging Het
Heatr4 A G 12: 84,024,856 (GRCm39) S322P probably benign Het
Htt T A 5: 34,987,099 (GRCm39) I1106N probably benign Het
Hunk T C 16: 90,183,570 (GRCm39) V76A probably benign Het
Igkv12-98 C T 6: 68,548,087 (GRCm39) T72I possibly damaging Het
Igkv9-123 A T 6: 67,931,629 (GRCm39) W16R possibly damaging Het
Ipo7 T C 7: 109,648,224 (GRCm39) L674S possibly damaging Het
Kcnh6 T C 11: 105,908,203 (GRCm39) F273S probably benign Het
Lamb3 C A 1: 193,002,848 (GRCm39) Q98K possibly damaging Het
Lingo4 A T 3: 94,310,162 (GRCm39) T367S probably benign Het
Lypd6b A T 2: 49,832,512 (GRCm39) I26F probably benign Het
Maneal T C 4: 124,750,512 (GRCm39) T415A probably benign Het
Mapk1ip1l A G 14: 47,547,920 (GRCm39) T23A unknown Het
Mrps17 T A 5: 129,793,705 (GRCm39) probably benign Het
Mup13 T G 4: 61,183,688 (GRCm39) D45A probably damaging Het
Mycbpap T A 11: 94,400,073 (GRCm39) D408V probably damaging Het
Myh10 A G 11: 68,701,017 (GRCm39) H1742R probably benign Het
Mylk4 A G 13: 32,900,766 (GRCm39) Y255H probably damaging Het
Nbeal1 A G 1: 60,256,355 (GRCm39) Q200R probably benign Het
Nkain2 TTTACTCGTT TTT 10: 32,765,892 (GRCm39) probably null Het
Olfm4 T C 14: 80,249,369 (GRCm39) V162A possibly damaging Het
Or1j15 A G 2: 36,458,708 (GRCm39) T33A probably benign Het
Or51a8 T C 7: 102,550,039 (GRCm39) L155P probably damaging Het
Or5w8 T C 2: 87,687,585 (GRCm39) V22A probably benign Het
Or8c11 C A 9: 38,289,456 (GRCm39) T87K probably benign Het
Ovol3 T A 7: 29,934,677 (GRCm39) R43S probably benign Het
Pcbp1 A G 6: 86,502,098 (GRCm39) V267A probably benign Het
Phf20 T A 2: 156,146,552 (GRCm39) V903E probably damaging Het
Pi4k2b T G 5: 52,914,211 (GRCm39) S316A probably benign Het
Pira1 G A 7: 3,742,875 (GRCm39) probably benign Het
Pkhd1 A T 1: 20,617,743 (GRCm39) H947Q probably damaging Het
Ppip5k2 A C 1: 97,678,478 (GRCm39) probably null Het
Prkca T A 11: 107,905,103 (GRCm39) T212S possibly damaging Het
Psg16 A T 7: 16,824,611 (GRCm39) I41F possibly damaging Het
Rae1 T A 2: 172,851,238 (GRCm39) F204I probably benign Het
Rasef T A 4: 73,662,374 (GRCm39) N192I probably damaging Het
Rfc1 T A 5: 65,420,478 (GRCm39) R1122S unknown Het
Rfx2 A T 17: 57,110,681 (GRCm39) S102T probably benign Het
Sez6l A G 5: 112,588,773 (GRCm39) Y647H probably damaging Het
Siglecf A G 7: 43,001,395 (GRCm39) Y121C probably damaging Het
Slc27a5 T C 7: 12,725,089 (GRCm39) T453A possibly damaging Het
Slc44a2 G A 9: 21,254,048 (GRCm39) R171Q probably damaging Het
Slc4a9 A C 18: 36,673,874 (GRCm39) E889A possibly damaging Het
Snx31 C A 15: 36,555,621 (GRCm39) R13L probably benign Het
Spag6l A T 16: 16,584,883 (GRCm39) Y422N probably benign Het
Spmip5 T C 19: 58,777,654 (GRCm39) E52G probably damaging Het
Sulf2 T C 2: 165,959,008 (GRCm39) T67A probably damaging Het
Syne2 G A 12: 76,013,758 (GRCm39) R2983Q probably benign Het
Tmtc3 A G 10: 100,283,281 (GRCm39) I758T probably benign Het
Tph1 T C 7: 46,306,285 (GRCm39) probably null Het
Trdmt1 A G 2: 13,520,933 (GRCm39) L323P probably damaging Het
Ush2a A T 1: 188,285,395 (GRCm39) E1977V probably damaging Het
Utp4 A G 8: 107,640,095 (GRCm39) E468G probably benign Het
Uts2r A G 11: 121,051,558 (GRCm39) T141A possibly damaging Het
Vmn1r230 A G 17: 21,066,952 (GRCm39) Y47C 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
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
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'- CTGATGAGAAACAGTTCCAACC -3'
(R):5'- GCCCCACCAATCTTGAACTTG -3'

Sequencing Primer
(F):5'- CCAGAGCACTTACCATGGGTAG -3'
(R):5'- TTTGTCCACCAAGTGCAGG -3'
Posted On 2019-09-13