Incidental Mutation 'R4112:Top2a'
ID 314476
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 040989-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R4112 (G1)
Quality Score 225
Status Validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to A at 98913786 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Lysine to Asparagine at position 18 (K18N)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably damaging
Transcript: ENSMUST00000068031
AA Change: K18N

PolyPhen 2 Score 0.995 (Sensitivity: 0.68; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: K18N

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: ENSMUST00000129777
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139730
Meta Mutation Damage Score 0.1032 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.7%
  • 10x: 97.6%
  • 20x: 96.3%
Validation Efficiency 97% (56/58)
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: 52 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700012B07Rik G T 11: 109,684,980 (GRCm39) C172* probably null Het
Aamp A G 1: 74,320,386 (GRCm39) probably benign Het
Abcb4 A G 5: 8,986,783 (GRCm39) probably null Het
Adam6b T A 12: 113,453,256 (GRCm39) F24L possibly damaging Het
Alms1 G A 6: 85,597,870 (GRCm39) V1368I probably benign Het
Angpt2 T A 8: 18,749,139 (GRCm39) Q326L probably damaging Het
Armc9 T A 1: 86,116,661 (GRCm39) I327N possibly damaging Het
Bace2 A G 16: 97,237,856 (GRCm39) T436A probably benign Het
Ccdc162 T A 10: 41,532,324 (GRCm39) E450V possibly damaging Het
Ccdc7b G T 8: 129,811,708 (GRCm39) probably benign Het
Cdh17 T C 4: 11,814,628 (GRCm39) S728P probably damaging Het
Chia1 T C 3: 106,035,844 (GRCm39) L168P probably damaging Het
Cnot1 A C 8: 96,500,246 (GRCm39) L111V probably damaging Het
Col14a1 A T 15: 55,226,955 (GRCm39) N235I unknown Het
Col2a1 A C 15: 97,881,582 (GRCm39) L787R probably benign Het
Cyp3a25 A T 5: 145,939,841 (GRCm39) D55E probably benign Het
Dennd6a A T 14: 26,349,673 (GRCm39) probably benign Het
Dnajc28 G A 16: 91,413,755 (GRCm39) T187M probably damaging Het
Etfbkmt T C 6: 149,046,089 (GRCm39) probably benign Het
Etfrf1 T C 6: 145,161,098 (GRCm39) Y23H probably damaging Het
Gemin4 T A 11: 76,103,645 (GRCm39) E372V probably damaging Het
Glyr1 T C 16: 4,836,350 (GRCm39) K500E possibly damaging Het
Gm10271 A T 10: 116,803,943 (GRCm39) probably benign Het
Gm20775 A T Y: 10,641,878 (GRCm39) noncoding transcript Het
Gm5578 A G 6: 112,583,466 (GRCm39) noncoding transcript Het
Gxylt2 A G 6: 100,760,167 (GRCm39) N234S probably damaging Het
Kcna6 G C 6: 126,716,737 (GRCm39) R51G probably damaging Het
Klf17 A G 4: 117,617,898 (GRCm39) V153A possibly damaging Het
L3mbtl2 T C 15: 81,566,170 (GRCm39) V331A possibly damaging Het
Med1 A T 11: 98,070,913 (GRCm39) V110E probably damaging Het
Nsmaf A C 4: 6,417,188 (GRCm39) Y535* probably null Het
Pcdh10 G A 3: 45,336,055 (GRCm39) V790M probably damaging Het
Phlpp1 A G 1: 106,292,068 (GRCm39) T976A probably damaging Het
Prelid3a T C 18: 67,605,967 (GRCm39) Y25H probably damaging Het
Ptprk T A 10: 28,351,284 (GRCm39) probably null Het
Rbm5 A T 9: 107,642,796 (GRCm39) D79E probably damaging Het
Rhox3f G T X: 36,763,672 (GRCm39) E140* probably null Het
Rnd3 T A 2: 51,038,242 (GRCm39) T78S possibly damaging Het
Scart2 G T 7: 139,878,281 (GRCm39) G1003* probably null Het
Sgca T C 11: 94,863,396 (GRCm39) T27A possibly damaging Het
Slc10a2 C T 8: 5,155,135 (GRCm39) D17N probably benign Het
Snap23 C T 2: 120,414,856 (GRCm39) probably benign Het
Sptb T A 12: 76,644,553 (GRCm39) T2098S probably damaging Het
Src T A 2: 157,304,946 (GRCm39) L165H probably damaging Het
Srr G T 11: 74,803,898 (GRCm39) Q20K probably benign Het
Stt3b A T 9: 115,095,206 (GRCm39) F275Y probably damaging Het
Sucnr1 C G 3: 59,994,215 (GRCm39) R248G probably damaging Het
Thsd7b A T 1: 130,044,356 (GRCm39) D1112V probably benign Het
Tmem80 A G 7: 140,913,692 (GRCm39) probably benign Het
Ttc24 T A 3: 87,981,946 (GRCm39) D40V probably damaging Het
Vmn2r129 G T 4: 156,686,692 (GRCm39) noncoding transcript Het
Zfp3 T A 11: 70,662,333 (GRCm39) S97R 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
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'- TCCTGACAAAGTATGCCATGAC -3'
(R):5'- CAGAAATGTCCATACTTGCAGAAC -3'

Sequencing Primer
(F):5'- TGACAATAAAGCAAGCGCACTTTG -3'
(R):5'- TTAAACGGGCATCTGTAGCC -3'
Posted On 2015-05-14