Incidental Mutation 'R8504:Top2a'
ID 655483
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 067840-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R8504 (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 98905567 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Isoleucine at position 337 (V337I)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably benign
Transcript: ENSMUST00000068031
AA Change: V337I

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: V337I

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: 99.7%
  • 20x: 99.1%
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: 67 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca4 T C 3: 121,922,983 (GRCm39) S1181P probably benign Het
Acvr1c C T 2: 58,173,491 (GRCm39) C337Y probably damaging Het
Adgrf5 A G 17: 43,757,840 (GRCm39) E758G probably benign Het
Akap3 T A 6: 126,841,493 (GRCm39) D37E probably damaging Het
Ano5 A T 7: 51,222,776 (GRCm39) H445L probably benign Het
Ap4b1 T A 3: 103,720,116 (GRCm39) I121N probably damaging Het
Arhgdia T C 11: 120,470,354 (GRCm39) K135E probably benign Het
Ass1 T C 2: 31,391,544 (GRCm39) F273S possibly damaging Het
Atp8a2 A C 14: 59,885,366 (GRCm39) Y1119* probably null Het
Birc6 T A 17: 74,959,000 (GRCm39) M3839K probably damaging Het
Cacna1a A G 8: 85,365,370 (GRCm39) H2171R probably benign Het
Ccdc90b T A 7: 92,224,545 (GRCm39) D183E probably benign Het
Ccng2 C G 5: 93,421,202 (GRCm39) S237R probably benign Het
Cdh23 T A 10: 60,274,618 (GRCm39) T491S probably benign Het
Cercam T C 2: 29,771,829 (GRCm39) S550P possibly damaging Het
Chd9 A G 8: 91,723,472 (GRCm39) H1019R unknown Het
Coil A T 11: 88,871,980 (GRCm39) K114* probably null Het
Csmd2 A C 4: 128,440,483 (GRCm39) T3183P Het
Cul9 T C 17: 46,814,506 (GRCm39) Y2219C probably damaging Het
Efhd2 G A 4: 141,587,186 (GRCm39) Q199* probably null Het
Elp3 A T 14: 65,785,360 (GRCm39) S499R probably benign Het
Exoc8 T G 8: 125,622,709 (GRCm39) I553L probably benign Het
Fyco1 C A 9: 123,659,142 (GRCm39) V345L probably benign Het
Galr3 T A 15: 78,927,279 (GRCm39) V240E probably damaging Het
Gm21190 A G 5: 15,730,862 (GRCm39) S165P probably benign Het
Gnal T A 18: 67,350,255 (GRCm39) Y372* probably null Het
H2-DMa A G 17: 34,357,416 (GRCm39) N230D probably damaging Het
Hk2 T C 6: 82,721,847 (GRCm39) D164G possibly damaging Het
Ighv3-4 T A 12: 114,217,544 (GRCm39) I16F possibly damaging Het
Ivl T C 3: 92,480,078 (GRCm39) probably benign Het
Klhl8 G A 5: 104,015,814 (GRCm39) T434M probably benign Het
Lct A T 1: 128,215,306 (GRCm39) S1757T probably damaging Het
Lmbr1l T A 15: 98,810,065 (GRCm39) Y132F probably damaging Het
M6pr T C 6: 122,293,029 (GRCm39) V203A possibly damaging Het
Map9 T C 3: 82,284,476 (GRCm39) probably null Het
Muc5ac A T 7: 141,360,892 (GRCm39) D1401V probably damaging Het
Myh7 A G 14: 55,227,786 (GRCm39) S291P probably damaging Het
Nynrin G C 14: 56,107,703 (GRCm39) V937L probably benign Het
Or5d44 C T 2: 88,141,825 (GRCm39) G105D probably benign Het
Or5m3 T G 2: 85,838,149 (GRCm39) F10V probably damaging Het
Pank2 A G 2: 131,135,320 (GRCm39) N386S probably benign Het
Phkg2 G T 7: 127,181,528 (GRCm39) R237L possibly damaging Het
Pkhd1 C T 1: 20,590,432 (GRCm39) V1772I probably benign Het
Plch2 G T 4: 155,068,852 (GRCm39) P1258Q probably benign Het
Plekhm2 A T 4: 141,369,764 (GRCm39) I77N probably damaging Het
Ptprb A G 10: 116,176,936 (GRCm39) T954A probably benign Het
Ranbp3 T C 17: 57,015,273 (GRCm39) V325A probably damaging Het
Rgs10 A T 7: 128,019,793 (GRCm39) S16T probably benign Het
Scaper A T 9: 55,771,722 (GRCm39) V398E probably benign Het
Selenot A G 3: 58,492,698 (GRCm39) I62V probably benign Het
Serpinb9e T A 13: 33,439,092 (GRCm39) C173S probably benign Het
Slc13a3 G T 2: 165,275,999 (GRCm39) T249K probably damaging Het
Slc4a8 T A 15: 100,701,171 (GRCm39) V741D possibly damaging Het
Slco4a1 T C 2: 180,106,592 (GRCm39) V258A probably damaging Het
Sycp2l T G 13: 41,291,390 (GRCm39) L256R probably damaging Het
Tektl1 T C 10: 78,585,038 (GRCm39) D266G probably benign Het
Tektl1 T C 10: 78,586,463 (GRCm39) D196G probably damaging Het
Tut4 T C 4: 108,388,139 (GRCm39) L1160P probably damaging Het
Unc13a A C 8: 72,098,405 (GRCm39) F1127V possibly damaging Het
Wdr25 C T 12: 108,992,393 (GRCm39) Q435* probably null Het
Zc3h7b T G 15: 81,664,719 (GRCm39) L526R probably damaging Het
Zeb1 C A 18: 5,705,127 (GRCm39) T48K possibly damaging Het
Zfhx2 A C 14: 55,303,243 (GRCm39) S1580R probably benign Het
Zfhx3 A G 8: 109,583,549 (GRCm39) I1139V possibly damaging Het
Zfp536 C A 7: 37,179,492 (GRCm39) V1038L probably benign Het
Zfp759 T A 13: 67,286,947 (GRCm39) V166E probably benign Het
Zfp985 A T 4: 147,667,883 (GRCm39) K250N possibly 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
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
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'- CAAAGGTTGGGTTTTCAATTAAGGC -3'
(R):5'- GTCAACAGCATTGCGACTTC -3'

Sequencing Primer
(F):5'- CCTGTAATAAAAGACGAGATAGTCAC -3'
(R):5'- GTCAACAGCATTGCGACTTCTAAGG -3'
Posted On 2020-10-20