Incidental Mutation 'R0047:Top2a'
ID 32983
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 038341-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R0047 (G1)
Quality Score 225
Status Validated (trace)
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 98888682 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Leucine at position 1260 (I1260L)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably benign
Transcript: ENSMUST00000068031
AA Change: I1260L

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: I1260L

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: ENSMUST00000104097
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139460
Predicted Effect noncoding transcript
Transcript: ENSMUST00000151997
Predicted Effect noncoding transcript
Transcript: ENSMUST00000154332
Meta Mutation Damage Score 0.0898 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.6%
  • 10x: 97.0%
  • 20x: 94.8%
Validation Efficiency 100% (98/98)
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: 99 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1110002E22Rik A G 3: 137,772,025 (GRCm39) T405A probably damaging Het
Acer1 A T 17: 57,262,624 (GRCm39) D175E possibly damaging Het
Acsf2 T C 11: 94,460,168 (GRCm39) I395V probably benign Het
Adamts9 G A 6: 92,882,287 (GRCm39) probably benign Het
Amigo3 T C 9: 107,931,857 (GRCm39) S427P probably benign Het
Ankrd35 A G 3: 96,591,379 (GRCm39) K555R probably benign Het
Arhgap35 A T 7: 16,295,917 (GRCm39) H1049Q probably benign Het
Arhgef5 G A 6: 43,242,555 (GRCm39) probably null Het
Arid4a T G 12: 71,122,193 (GRCm39) L858W probably damaging Het
Bbox1 A G 2: 110,098,647 (GRCm39) F310S probably damaging Het
Bhlhe22 T C 3: 18,109,733 (GRCm39) L261P probably damaging Het
Bltp1 T A 3: 36,962,341 (GRCm39) L481M possibly damaging Het
Bmper T A 9: 23,317,982 (GRCm39) C534S probably damaging Het
Cacna1d T G 14: 30,068,747 (GRCm39) probably benign Het
Camk2g G A 14: 20,821,136 (GRCm39) probably benign Het
Capn12 G A 7: 28,589,812 (GRCm39) probably null Het
Cdkl4 T G 17: 80,858,274 (GRCm39) N115T probably benign Het
Chchd1 T C 14: 20,754,231 (GRCm39) S48P possibly damaging Het
Chia1 G T 3: 106,022,573 (GRCm39) C49F probably damaging Het
Cnot7 A G 8: 40,948,962 (GRCm39) probably benign Het
Crh T C 3: 19,748,201 (GRCm39) E147G probably damaging Het
Cux1 T C 5: 136,392,107 (GRCm39) probably benign Het
Cyp2b19 T A 7: 26,466,251 (GRCm39) D351E probably benign Het
Dctn1 G T 6: 83,159,614 (GRCm39) G31* probably null Het
Duox1 T A 2: 122,177,122 (GRCm39) probably benign Het
Egflam T G 15: 7,282,911 (GRCm39) E382A possibly damaging Het
Ext1 T C 15: 53,208,542 (GRCm39) N73S probably benign Het
Ffar4 A G 19: 38,102,452 (GRCm39) probably benign Het
Glg1 A T 8: 111,892,214 (GRCm39) M866K probably damaging Het
Golm1 T A 13: 59,792,914 (GRCm39) H197L probably benign Het
Gtse1 A G 15: 85,746,579 (GRCm39) K132E probably damaging Het
Gxylt2 A T 6: 100,710,339 (GRCm39) probably benign Het
Hrc T A 7: 44,986,113 (GRCm39) S421R probably benign Het
Ighg2c T A 12: 113,251,788 (GRCm39) probably benign Het
Ihh A G 1: 74,985,750 (GRCm39) I245T probably benign Het
Ilf3 T A 9: 21,300,010 (GRCm39) M65K possibly damaging Het
Insr A G 8: 3,252,947 (GRCm39) V404A probably damaging Het
Irak2 G T 6: 113,649,914 (GRCm39) probably benign Het
Irak2 G A 6: 113,655,699 (GRCm39) V367I probably benign Het
Kat7 A C 11: 95,191,034 (GRCm39) N119K probably benign Het
Kif9 A G 9: 110,314,106 (GRCm39) I33V probably benign Het
Klf17 A G 4: 117,618,229 (GRCm39) Y43H probably benign Het
Kng2 T A 16: 22,806,313 (GRCm39) T629S possibly damaging Het
Lama1 A T 17: 68,102,181 (GRCm39) probably benign Het
Lamb1 T C 12: 31,328,600 (GRCm39) I188T possibly damaging Het
Lpp T A 16: 24,480,550 (GRCm39) probably benign Het
Lrp12 T C 15: 39,741,635 (GRCm39) E360G probably damaging Het
Mark2 A C 19: 7,260,942 (GRCm39) probably benign Het
Mmp3 T C 9: 7,451,910 (GRCm39) probably benign Het
Mthfd1l T A 10: 3,928,727 (GRCm39) probably benign Het
Mtr A T 13: 12,237,112 (GRCm39) S569T probably damaging Het
Myh13 T A 11: 67,258,063 (GRCm39) S1752T probably benign Het
Myo5a T A 9: 75,063,489 (GRCm39) L565H probably damaging Het
Nanos3 C T 8: 84,902,763 (GRCm39) R133Q probably damaging Het
Nfkb1 A T 3: 135,300,814 (GRCm39) L72* probably null Het
Numa1 A G 7: 101,658,660 (GRCm39) K296E probably damaging Het
Obi1 T A 14: 104,740,780 (GRCm39) probably null Het
Or51ab3 A T 7: 103,201,529 (GRCm39) Y179F probably damaging Het
Or5ac19 C T 16: 59,089,574 (GRCm39) G152D probably damaging Het
Or5b120 A G 19: 13,479,953 (GRCm39) E82G probably benign Het
Or5h18 T A 16: 58,847,587 (GRCm39) M228L probably benign Het
Or5p80 A G 7: 108,229,759 (GRCm39) I187V probably benign Het
Pcdhb5 A T 18: 37,454,321 (GRCm39) I234F possibly damaging Het
Pgm5 T A 19: 24,661,920 (GRCm39) I545F probably damaging Het
Pla2g2c T C 4: 138,470,901 (GRCm39) probably benign Het
Pnpla7 A T 2: 24,901,618 (GRCm39) E548V probably damaging Het
Ppm1m C A 9: 106,073,895 (GRCm39) E273* probably null Het
Ppp2r1b C T 9: 50,772,873 (GRCm39) R117* probably null Het
Rabgap1l G A 1: 160,059,359 (GRCm39) probably benign Het
Rapgef6 T A 11: 54,437,204 (GRCm39) M49K possibly damaging Het
Rhox4f A C X: 36,789,122 (GRCm39) V15G probably benign Het
Rtel1 T G 2: 180,965,198 (GRCm39) I146M probably damaging Het
Sdr9c7 A T 10: 127,739,541 (GRCm39) M219L probably benign Het
Serpina3g T A 12: 104,206,543 (GRCm39) S115T possibly damaging Het
Serpinb1a A T 13: 33,034,259 (GRCm39) L44Q probably damaging Het
Slc13a4 A G 6: 35,264,297 (GRCm39) I190T possibly damaging Het
Slc46a2 A G 4: 59,914,392 (GRCm39) L177P probably damaging Het
Slc47a2 C T 11: 61,227,068 (GRCm39) V167M possibly damaging Het
Snrnp200 C T 2: 127,076,874 (GRCm39) probably benign Het
Snx13 C A 12: 35,151,123 (GRCm39) probably benign Het
Snx25 C T 8: 46,494,402 (GRCm39) A828T probably damaging Het
Spic A G 10: 88,511,803 (GRCm39) L151P probably damaging Het
Ssu2 G A 6: 112,351,781 (GRCm39) H315Y probably damaging Het
Stk32a T C 18: 43,446,443 (GRCm39) probably benign Het
Tbx3 A T 5: 119,818,511 (GRCm39) E382V probably damaging Het
Tcaf2 A G 6: 42,606,547 (GRCm39) I469T probably benign Het
Tln2 A G 9: 67,147,954 (GRCm39) probably benign Het
Treml1 C A 17: 48,672,008 (GRCm39) S91* probably null Het
Trim26 T C 17: 37,168,756 (GRCm39) probably benign Het
Trmt11 T C 10: 30,411,239 (GRCm39) N418S probably benign Het
Ttf1 A G 2: 28,974,667 (GRCm39) Y801C probably damaging Het
Usp34 C T 11: 23,414,403 (GRCm39) A2782V probably benign Het
Vmn2r77 T C 7: 86,460,858 (GRCm39) V728A probably benign Het
Vps4a T C 8: 107,763,333 (GRCm39) L29P probably damaging Het
Wdfy3 A G 5: 102,091,899 (GRCm39) I480T probably damaging Het
Wdr41 A G 13: 95,146,795 (GRCm39) I197V probably damaging Het
Ywhag A T 5: 135,940,153 (GRCm39) V147E probably damaging Het
Zan A G 5: 137,401,918 (GRCm39) M4058T unknown Het
Zfp236 C T 18: 82,698,817 (GRCm39) C88Y 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
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
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'- CTGTTGAAGCCAAGGAAAACCAAGC -3'
(R):5'- gccatctccagcccGACTTCTTTT -3'

Sequencing Primer
(F):5'- ACCAAGCAGGACTTCCTGG -3'
(R):5'- gctagtcgtgaactctgtcc -3'
Posted On 2013-05-09