Incidental Mutation 'R9383:Top2a'
ID 710169
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: 0.971) question?
Stock # R9383 (G1)
Quality Score 225.009
Status Not validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) G to A at 98901884 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Arginine to Stop codon at position 449 (R449*)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably null
Transcript: ENSMUST00000068031
AA Change: R449*
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: R449*

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: 99.7%
  • 20x: 98.9%
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: 58 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgrg5 A G 8: 95,661,162 (GRCm39) E124G Het
Atp1a2 T C 1: 172,107,334 (GRCm39) I729V probably benign Het
Ccn2 T G 10: 24,471,883 (GRCm39) V58G possibly damaging Het
Chd2 T A 7: 73,098,918 (GRCm39) E1467V probably null Het
Col6a5 T C 9: 105,803,110 (GRCm39) D1285G unknown Het
Coro7 A G 16: 4,452,888 (GRCm39) C287R probably damaging Het
Cpa3 T C 3: 20,283,045 (GRCm39) E134G probably benign Het
Csf3r C T 4: 125,937,239 (GRCm39) P708S possibly damaging Het
Defb30 T C 14: 63,273,463 (GRCm39) E49G probably benign Het
Dnah3 A T 7: 119,646,819 (GRCm39) I1070K probably benign Het
Dnm2 G A 9: 21,383,920 (GRCm39) V234M probably damaging Het
Drg2 T A 11: 60,350,287 (GRCm39) M82K probably benign Het
Dus2 G A 8: 106,776,950 (GRCm39) E312K probably benign Het
Efcab6 T C 15: 83,756,620 (GRCm39) E1240G possibly damaging Het
Ep400 T C 5: 110,833,351 (GRCm39) E1957G unknown Het
Gpnmb A G 6: 49,028,918 (GRCm39) S479G probably damaging Het
Gpr153 T C 4: 152,367,516 (GRCm39) S456P probably benign Het
Gprc5b A T 7: 118,575,761 (GRCm39) M388K probably damaging Het
H2-T23 T C 17: 36,343,227 (GRCm39) D50G possibly damaging Het
Hipk1 T C 3: 103,684,883 (GRCm39) E244G probably damaging Het
Malrd1 T A 2: 15,700,012 (GRCm39) C620S unknown Het
Maz G A 7: 126,624,083 (GRCm39) Q358* probably null Het
Mcc A T 18: 44,575,985 (GRCm39) I901N probably benign Het
Megf11 T G 9: 64,545,732 (GRCm39) C172G probably damaging Het
Mipol1 A G 12: 57,352,820 (GRCm39) Y53C probably benign Het
Nectin4 C T 1: 171,213,251 (GRCm39) T391I probably damaging Het
Nell2 A T 15: 95,282,957 (GRCm39) Y362N possibly damaging Het
Nphp4 T C 4: 152,628,918 (GRCm39) probably null Het
Nsun4 A G 4: 115,891,473 (GRCm39) V302A probably benign Het
Odf2 T A 2: 29,791,249 (GRCm39) L181H probably damaging Het
Opn1sw A G 6: 29,378,000 (GRCm39) S328P possibly damaging Het
Or8k30 T C 2: 86,338,854 (GRCm39) I17T probably damaging Het
Pga5 C T 19: 10,646,897 (GRCm39) G303S probably damaging Het
Pik3c2g T A 6: 139,827,742 (GRCm39) Y712* probably null Het
Pkd1 C T 17: 24,794,900 (GRCm39) R2196C probably damaging Het
Pkd1l3 TATCCAGCAGCCCACCACAGGTGACATCAGACACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGACACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGAGACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGACACATCTGCATCCATCAGCCCACCACAGGTAATATCAGACACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGAGACACCTGCATCCAGCAGCCCA TATCCAGCAGCCCACCACAGGTGACATCAGACACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGAGACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGACACATCTGCATCCATCAGCCCACCACAGGTAATATCAGACACACCTGCATCCAGCAGCCCACCACAGGTGACATCAGAGACACCTGCATCCAGCAGCCCA 8: 110,350,601 (GRCm39) probably benign Het
Plekhm2 A T 4: 141,359,612 (GRCm39) M385K probably damaging Het
Pole T C 5: 110,438,892 (GRCm39) V164A possibly damaging Het
Prr19 T A 7: 25,002,335 (GRCm39) F11Y probably damaging Het
Prtg G T 9: 72,757,143 (GRCm39) L355F probably benign Het
Raph1 C A 1: 60,564,829 (GRCm39) M219I unknown Het
Rtkn2 A G 10: 67,839,094 (GRCm39) D140G possibly damaging Het
Serpina5 T C 12: 104,070,131 (GRCm39) S343P probably damaging Het
Slc1a1 A G 19: 28,889,125 (GRCm39) K466R probably benign Het
Slc43a1 G A 2: 84,690,506 (GRCm39) V518M probably damaging Het
Slc47a2 A G 11: 61,227,749 (GRCm39) L125P probably damaging Het
Slc4a7 C A 14: 14,766,803 (GRCm38) C585* probably null Het
Snx19 A G 9: 30,347,196 (GRCm39) E713G probably damaging Het
Tiam1 C T 16: 89,655,561 (GRCm39) V715M probably damaging Het
Tln2 T A 9: 67,278,043 (GRCm39) M322L probably benign Het
Trpv4 C A 5: 114,796,474 (GRCm39) probably benign Het
Vmn1r214 A C 13: 23,219,095 (GRCm39) R196S probably benign Het
Vmn1r43 A T 6: 89,846,552 (GRCm39) H311Q possibly damaging Het
Vmn1r54 A G 6: 90,247,009 (GRCm39) T308A probably benign Het
Zfand3 T A 17: 30,354,479 (GRCm39) Y99N probably benign Het
Zfp119b T C 17: 56,246,355 (GRCm39) Y277C probably damaging Het
Zfp345 G A 2: 150,314,503 (GRCm39) H345Y possibly damaging Het
Zyg11a T C 4: 108,046,926 (GRCm39) E516G 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
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
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'- TGCTCAGAACAGTGTCATCAC -3'
(R):5'- ACAGTGATTGCAGCTGATAGAAC -3'

Sequencing Primer
(F):5'- CATCACTTACCTGTTTATGAGAGGC -3'
(R):5'- TCTGTGTTCAAGGCCAGC -3'
Posted On 2022-04-18