Incidental Mutation 'R9301:Top2a'
ID 704961
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
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R9301 (G1)
Quality Score 225.009
Status Not validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 98897790 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Glycine to Aspartic acid at position 759 (G759D)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably damaging
Transcript: ENSMUST00000068031
AA Change: G759D

PolyPhen 2 Score 0.991 (Sensitivity: 0.71; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: G759D

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: 99.9%
  • 10x: 99.6%
  • 20x: 98.4%
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: 70 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca4 T A 3: 121,881,128 (GRCm39) N514K probably benign Het
Adss1 A T 12: 112,602,882 (GRCm39) R358W probably damaging Het
Anxa8 T A 14: 33,819,932 (GRCm39) I307N probably damaging Het
Atad5 T A 11: 79,986,845 (GRCm39) I644N probably damaging Het
Atp5f1a G T 18: 77,868,938 (GRCm39) L437F probably damaging Het
Babam1 A G 8: 71,855,684 (GRCm39) K259R possibly damaging Het
BC048562 T G 9: 108,323,054 (GRCm39) F130V probably damaging Het
Btf3l4b T A 13: 96,217,621 (GRCm39) K73* probably null Het
Camsap2 T A 1: 136,202,640 (GRCm39) probably null Het
Ccne2 A G 4: 11,192,881 (GRCm39) I27M probably benign Het
Cd302 A G 2: 60,082,793 (GRCm39) V177A possibly damaging Het
Cfap46 T C 7: 139,222,461 (GRCm39) K1172R Het
Cic T C 7: 24,991,117 (GRCm39) W2141R probably damaging Het
Cpeb3 A G 19: 37,151,473 (GRCm39) V301A possibly damaging Het
Cpsf3 A G 12: 21,350,112 (GRCm39) K277R possibly damaging Het
Cstl1 A G 2: 148,592,926 (GRCm39) H27R possibly damaging Het
Dapk1 T A 13: 60,866,125 (GRCm39) I188K possibly damaging Het
Dock6 T C 9: 21,729,111 (GRCm39) T1301A probably benign Het
Eml5 A T 12: 98,848,292 (GRCm39) C133* probably null Het
Ermap T A 4: 119,042,744 (GRCm39) I260F probably damaging Het
Fbxw22 T G 9: 109,215,653 (GRCm39) E198D possibly damaging Het
Flt4 T C 11: 49,516,241 (GRCm39) Y115H possibly damaging Het
Fmo9 A C 1: 166,494,794 (GRCm39) I369S probably damaging Het
Frmd4a T A 2: 4,157,904 (GRCm39) S6T probably benign Het
Golga5 A T 12: 102,443,057 (GRCm39) I330L probably benign Het
Helq C A 5: 100,927,158 (GRCm39) V643F probably damaging Het
Ino80d A T 1: 63,104,969 (GRCm39) L369H probably damaging Het
Kank1 A T 19: 25,388,798 (GRCm39) M824L probably benign Het
Lilrb4b T C 10: 51,356,801 (GRCm39) probably benign Het
Ltbp4 T A 7: 27,021,578 (GRCm39) D1003V probably damaging Het
Mapk8ip2 T C 15: 89,341,886 (GRCm39) S366P probably damaging Het
Mdga1 T C 17: 30,069,512 (GRCm39) H178R probably benign Het
Mlh3 A G 12: 85,292,613 (GRCm39) V1266A possibly damaging Het
Nrp1 A G 8: 129,089,859 (GRCm39) E78G probably damaging Het
Or1l4 A T 2: 37,091,255 (GRCm39) M1L probably benign Het
Or4z4 A T 19: 12,076,826 (GRCm39) M59K probably damaging Het
Or5d16 A G 2: 87,773,297 (GRCm39) V225A probably benign Het
Or8k33 A G 2: 86,383,818 (GRCm39) S217P possibly damaging Het
Ovch2 A G 7: 107,395,815 (GRCm39) S68P probably damaging Het
Pappa2 T A 1: 158,672,614 (GRCm39) I1110F probably damaging Het
Pcyox1 A C 6: 86,369,241 (GRCm39) L195R possibly damaging Het
Pde11a A G 2: 75,848,217 (GRCm39) L870P probably damaging Het
Pgpep1 G A 8: 71,103,418 (GRCm39) T152M probably damaging Het
Pik3c2a A T 7: 115,945,413 (GRCm39) D1464E probably damaging Het
Plcb1 A G 2: 135,167,610 (GRCm39) K468R possibly damaging Het
Postn C T 3: 54,292,659 (GRCm39) T742I probably benign Het
Ppm1j T A 3: 104,691,057 (GRCm39) Y274N probably damaging Het
Ppp2cb T C 8: 34,090,038 (GRCm39) C32R possibly damaging Het
Prmt9 T A 8: 78,282,374 (GRCm39) Y90* probably null Het
Ptk2 T C 15: 73,146,346 (GRCm39) Y441C probably damaging Het
Rabggta T A 14: 55,957,083 (GRCm39) I266L probably benign Het
Rft1 C T 14: 30,398,812 (GRCm39) R261W probably damaging Het
Rsrc1 C T 3: 67,197,680 (GRCm39) A195V probably damaging Het
Rtkn2 T G 10: 67,871,677 (GRCm39) L355R possibly damaging Het
Runx1t1 A T 4: 13,875,477 (GRCm39) D427V possibly damaging Het
Slc15a4 T G 5: 127,673,812 (GRCm39) H534P probably benign Het
Slc16a7 T C 10: 125,066,880 (GRCm39) N253S probably damaging Het
Slc29a1 A G 17: 45,897,063 (GRCm39) S408P probably damaging Het
Slc52a2 G A 15: 76,424,406 (GRCm39) A215T probably damaging Het
Smc1b T A 15: 85,011,995 (GRCm39) I126L probably damaging Het
Sycp2 A T 2: 178,023,650 (GRCm39) N455K probably benign Het
Tbck T C 3: 132,543,738 (GRCm39) V863A probably benign Het
Tfap2c A G 2: 172,395,347 (GRCm39) M263V probably benign Het
Tmem45a A G 16: 56,627,134 (GRCm39) V245A probably damaging Het
Traf5 A G 1: 191,729,489 (GRCm39) S218P Het
Tsfm T C 10: 126,866,502 (GRCm39) R20G probably benign Het
Ugt2a2 G T 5: 87,608,382 (GRCm39) Q486K probably damaging Het
Usp34 T A 11: 23,422,951 (GRCm39) D3108E Het
Wnt11 A G 7: 98,495,796 (GRCm39) Y100C probably damaging Het
Zbtb49 A G 5: 38,370,931 (GRCm39) C317R 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
R9240:Top2a UTSW 11 98,901,368 (GRCm39) nonsense probably null
R9294:Top2a UTSW 11 98,891,904 (GRCm39) missense probably benign 0.00
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'- GGGTTCTCAAACATAAGACTTCAAG -3'
(R):5'- TCGTAGAATGGTAACTTACGCCA -3'

Sequencing Primer
(F):5'- TGCTCTTCCGAAAGTCCGAAG -3'
(R):5'- GAATGGTAACTTACGCCAAAAATTG -3'
Posted On 2022-03-25