Incidental Mutation 'R2124:Top2a'
ID 229685
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 040127-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.970) question?
Stock # R2124 (G1)
Quality Score 225
Status Validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 98895054 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Valine at position 849 (I849V)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably benign
Transcript: ENSMUST00000068031
AA Change: I849V

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: I849V

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: ENSMUST00000144318
Predicted Effect noncoding transcript
Transcript: ENSMUST00000151997
Meta Mutation Damage Score 0.0601 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.2%
Validation Efficiency 98% (80/82)
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: 78 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4933430I17Rik T A 4: 62,457,109 (GRCm39) L143M possibly damaging Het
Abca13 T C 11: 9,259,013 (GRCm39) probably benign Het
Abcg5 T A 17: 84,978,575 (GRCm39) E294D probably benign Het
Adgrg6 T C 10: 14,342,930 (GRCm39) D339G probably damaging Het
Ahctf1 C A 1: 179,597,017 (GRCm39) R43L probably damaging Het
Ambn T A 5: 88,608,617 (GRCm39) probably benign Het
Arap3 A C 18: 38,106,403 (GRCm39) L1480R probably damaging Het
Arhgef10 A G 8: 14,984,820 (GRCm39) D200G probably damaging Het
Aspg G A 12: 112,087,608 (GRCm39) V8I probably benign Het
Aven T A 2: 112,455,541 (GRCm39) W26R probably damaging Het
Car4 T A 11: 84,854,911 (GRCm39) probably benign Het
Cd163 C T 6: 124,295,815 (GRCm39) R720C probably damaging Het
Cdh1 A G 8: 107,390,842 (GRCm39) I653V probably benign Het
Cdh3 A T 8: 107,279,520 (GRCm39) H712L probably damaging Het
Cdr2 T C 7: 120,581,250 (GRCm39) E9G probably damaging Het
Cfap47 T C X: 78,553,927 (GRCm39) I267V probably benign Het
Chrnb2 T C 3: 89,676,648 (GRCm39) probably benign Het
Col4a2 C A 8: 11,466,070 (GRCm39) P443Q probably damaging Het
Cyp2a12 A G 7: 26,736,071 (GRCm39) *493W probably null Het
Ddias T C 7: 92,507,464 (GRCm39) Q817R probably benign Het
Ddx6 C T 9: 44,535,816 (GRCm39) Q182* probably null Het
Dhrs7 A G 12: 72,699,951 (GRCm39) I227T probably damaging Het
Dhx8 A T 11: 101,653,071 (GRCm39) M970L probably damaging Het
Dnah7a A T 1: 53,536,101 (GRCm39) D2647E possibly damaging Het
Dstyk G A 1: 132,380,857 (GRCm39) G451R possibly damaging Het
Ednrb T A 14: 104,059,204 (GRCm39) D274V probably benign Het
Efl1 C T 7: 82,342,121 (GRCm39) R510C probably damaging Het
Eif4g3 A G 4: 137,912,053 (GRCm39) E1409G probably damaging Het
Fam78b G A 1: 166,906,278 (GRCm39) V146M probably damaging Het
Fcgbp T C 7: 27,791,444 (GRCm39) Y902H probably benign Het
Fgf18 A C 11: 33,068,003 (GRCm39) F129C probably damaging Het
Gbp9 T A 5: 105,242,409 (GRCm39) D110V probably damaging Het
Gm10477 A G X: 55,570,192 (GRCm39) K31E probably damaging Het
Gm10542 T A 18: 44,334,355 (GRCm39) W9R probably null Het
Gpaa1 A G 15: 76,217,552 (GRCm39) Y330C probably damaging Het
Hectd4 T C 5: 121,456,702 (GRCm39) L689P probably damaging Het
Hoxd3 C A 2: 74,574,578 (GRCm39) P75T possibly damaging Het
Ikbkb A G 8: 23,156,036 (GRCm39) L570P probably damaging Het
Ikbkb T C 8: 23,157,233 (GRCm39) probably benign Het
Il1rap A T 16: 26,529,315 (GRCm39) H379L probably damaging Het
Ints6l T A X: 55,550,228 (GRCm39) S718T probably benign Het
Jaml T A 9: 45,012,362 (GRCm39) I283N probably damaging Het
Kidins220 G A 12: 25,091,302 (GRCm39) probably null Het
Kif1b T C 4: 149,306,753 (GRCm39) D869G probably benign Het
Loxl2 T C 14: 69,929,859 (GRCm39) Y746H probably benign Het
Ltbr A G 6: 125,286,440 (GRCm39) S249P probably benign Het
Mageb5 A G X: 90,823,701 (GRCm39) I226T probably damaging Het
Msantd2 C T 9: 37,434,227 (GRCm39) R357W probably damaging Het
Mtcl2 T C 2: 156,875,245 (GRCm39) E835G probably damaging Het
Neb A G 2: 52,154,076 (GRCm39) F2345S probably damaging Het
Or7e173 T G 9: 19,938,797 (GRCm39) I146L probably benign Het
Pabpc4l T C 3: 46,401,276 (GRCm39) T123A probably benign Het
Plekhg4 TAGTCGATGCCCGAGTC TAGTC 8: 106,103,084 (GRCm39) probably benign Het
Prkdc T C 16: 15,537,297 (GRCm39) V1716A probably benign Het
Prss37 G A 6: 40,492,294 (GRCm39) R186* probably null Het
Psg20 T A 7: 18,414,947 (GRCm39) Y316F probably benign Het
Rasgrp2 T A 19: 6,454,425 (GRCm39) M156K probably benign Het
Rims1 T A 1: 22,474,732 (GRCm39) R200* probably null Het
Rnf168 T G 16: 32,097,036 (GRCm39) L37R probably damaging Het
Sall3 C T 18: 81,015,012 (GRCm39) G972D probably benign Het
Sap18 T A 14: 58,036,011 (GRCm39) S66T probably damaging Het
Scamp5 C A 9: 57,354,508 (GRCm39) V49F possibly damaging Het
Sdk1 C A 5: 142,170,943 (GRCm39) D1935E possibly damaging Het
Setd2 A G 9: 110,378,932 (GRCm39) S632G probably benign Het
Syt16 T A 12: 74,285,009 (GRCm39) S401T probably damaging Het
Tas2r106 A T 6: 131,655,317 (GRCm39) L178H probably damaging Het
Tbcd A G 11: 121,494,146 (GRCm39) Y983C probably damaging Het
Tenm3 A G 8: 48,870,041 (GRCm39) probably null Het
Tll1 T C 8: 64,538,591 (GRCm39) E351G probably benign Het
Tmem44 T A 16: 30,366,262 (GRCm39) K55* probably null Het
Ttn A G 2: 76,624,792 (GRCm39) V13516A probably damaging Het
Uxs1 A G 1: 43,814,006 (GRCm39) L77P probably damaging Het
Vmn2r121 A T X: 123,043,439 (GRCm39) probably null Het
Vmn2r84 A C 10: 130,227,100 (GRCm39) M246R probably damaging Het
Vps13b T A 15: 35,646,226 (GRCm39) N1443K probably benign Het
Wfdc6b C T 2: 164,459,363 (GRCm39) R142C probably benign Het
Zfp616 A G 11: 73,973,869 (GRCm39) probably null Het
Zmym1 T C 4: 126,943,363 (GRCm39) T244A 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
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'- TAGCGTCCAATCTCCTCAGC -3'
(R):5'- CCACCAATCTTGAACTTGAGAGG -3'

Sequencing Primer
(F):5'- CCGTGCCTGATGAGAAACAGTTC -3'
(R):5'- TTTGTCCACCAAGTGCAGG -3'
Posted On 2014-09-17