Incidental Mutation 'R4110:Top2a'
ID 317263
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 040988-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R4110 (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: 99.1%
  • 3x: 98.5%
  • 10x: 97.3%
  • 20x: 95.6%
Validation Efficiency 100% (61/61)
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: 59 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700012B07Rik G T 11: 109,684,980 (GRCm39) C172* probably null Het
Acot10 A T 15: 20,666,612 (GRCm39) L43Q probably damaging Het
Alms1 G A 6: 85,597,870 (GRCm39) V1368I probably benign Het
Als2cl T C 9: 110,713,115 (GRCm39) S2P probably benign Het
AW209491 T C 13: 14,812,158 (GRCm39) V337A probably damaging Het
Bace2 A G 16: 97,237,856 (GRCm39) T436A probably benign Het
BC023105 A G 18: 60,575,356 (GRCm39) noncoding transcript Het
Blvra T C 2: 126,937,075 (GRCm39) V176A probably damaging Het
Casp2 G A 6: 42,244,828 (GRCm39) A76T probably damaging Het
Ccdc88c A G 12: 100,911,332 (GRCm39) L34P probably damaging Het
Cep250 G A 2: 155,834,552 (GRCm39) R2159K probably damaging Het
Col6a2 T A 10: 76,442,003 (GRCm39) probably null Het
Cse1l T C 2: 166,783,970 (GRCm39) Y488H probably benign Het
Dip2c G T 13: 9,687,137 (GRCm39) G1254C probably damaging Het
Dnajb12 T A 10: 59,730,136 (GRCm39) S270R possibly damaging Het
Dnajc28 G A 16: 91,413,755 (GRCm39) T187M probably damaging Het
Dscaml1 G A 9: 45,643,366 (GRCm39) A1262T probably benign Het
Dtwd2 A C 18: 49,831,373 (GRCm39) probably benign Het
Fadd C A 7: 144,134,488 (GRCm39) K132N possibly damaging Het
Fndc3c1 T C X: 105,487,897 (GRCm39) N462S probably benign Het
Fzd3 A G 14: 65,472,616 (GRCm39) V384A probably benign Het
Gm6370 T C 5: 146,430,702 (GRCm39) S296P probably benign Het
Gsdmc T A 15: 63,651,876 (GRCm39) H245L probably benign Het
H13 T C 2: 152,523,029 (GRCm39) I114T probably damaging Het
Hhipl2 A G 1: 183,204,920 (GRCm39) R78G probably benign Het
Hrh3 C A 2: 179,744,643 (GRCm39) R99L possibly damaging Het
Ldc1 A T 4: 130,112,967 (GRCm39) L143Q probably damaging Het
Man2c1 A G 9: 57,044,055 (GRCm39) N330S probably damaging Het
Muc19 T A 15: 91,781,816 (GRCm39) noncoding transcript Het
Myh14 T G 7: 44,277,974 (GRCm39) M1092L probably benign Het
Neb A G 2: 52,038,778 (GRCm39) I2899T probably benign Het
Neb T A 2: 52,134,137 (GRCm39) Q3282L probably damaging Het
Nqo2 A T 13: 34,163,620 (GRCm39) Q93L probably benign Het
Or13a18 T A 7: 140,190,178 (GRCm39) L33Q possibly damaging Het
Or13a18 C A 7: 140,190,177 (GRCm39) L33M probably benign Het
Or4a2 C A 2: 89,248,444 (GRCm39) L104F probably benign Het
Or51i2 T C 7: 103,689,609 (GRCm39) V202A probably damaging Het
Pcsk1 A G 13: 75,244,488 (GRCm39) N122S probably damaging Het
Pdzrn4 A G 15: 92,668,745 (GRCm39) I966V probably benign Het
Phldb1 G A 9: 44,627,128 (GRCm39) T439I possibly damaging Het
Pign A G 1: 105,481,540 (GRCm39) probably benign Het
Pkn1 A T 8: 84,417,828 (GRCm39) D120E probably benign Het
Ptpru A G 4: 131,546,348 (GRCm39) Y301H probably damaging Het
Raly C T 2: 154,699,378 (GRCm39) Q61* probably null Het
Rpl24 T C 16: 55,791,723 (GRCm39) V148A probably benign Het
S100a16 A G 3: 90,449,379 (GRCm39) N18S probably damaging Het
Sec31b G T 19: 44,512,968 (GRCm39) T507N possibly damaging Het
Sgca T C 11: 94,863,396 (GRCm39) T27A possibly damaging Het
Slc22a12 C A 19: 6,590,658 (GRCm39) R203L probably damaging Het
Ssbp3 C A 4: 106,904,393 (GRCm39) probably benign Het
Sucnr1 C G 3: 59,994,215 (GRCm39) R248G probably damaging Het
Tbr1 C T 2: 61,642,076 (GRCm39) P184L probably benign Het
Thsd7b A T 1: 130,044,356 (GRCm39) D1112V probably benign Het
Tnc A G 4: 63,933,188 (GRCm39) V692A probably damaging Het
Topbp1 G T 9: 103,187,158 (GRCm39) R121L probably damaging Het
Unc79 T C 12: 103,025,629 (GRCm39) C339R probably damaging Het
Wdfy3 C T 5: 102,047,924 (GRCm39) probably null Het
Zbtb3 G C 19: 8,780,384 (GRCm39) probably benign Het
Zfp715 T A 7: 42,947,304 (GRCm39) K885N 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
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'- GCCTGCAGTATATACATGAATGATGG -3'
(R):5'- TGTAAACTCTACCAGTACCTACAAG -3'

Sequencing Primer
(F):5'- AAAATCCTGACAAAGTATGCCATG -3'
(R):5'- TCTACCAGTACCTACAAGCAGGGG -3'
Posted On 2015-05-15