Incidental Mutation 'R9655:Top2a'
ID 735481
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: 0.970) question?
Stock # R9655 (G1)
Quality Score 225.009
Status Not validated
Chromosome 11
Chromosomal Location 98883769-98915015 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to T at 98905334 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Asparagine to Lysine at position 369 (N369K)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
AlphaFold Q01320
Predicted Effect probably damaging
Transcript: ENSMUST00000068031
AA Change: N369K

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: N369K

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: 99.9%
  • 3x: 99.8%
  • 10x: 99.4%
  • 20x: 98.7%
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: 83 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4933402N03Rik T A 7: 130,740,695 (GRCm39) I174F possibly damaging Het
Ada C A 2: 163,574,270 (GRCm39) V129F probably damaging Het
Adgrl4 G T 3: 151,248,450 (GRCm39) M707I probably damaging Het
Ahcyl A T 16: 45,974,564 (GRCm39) I271N probably damaging Het
Arrb2 A G 11: 70,331,073 (GRCm39) Q419R probably null Het
Atad2 A T 15: 57,998,303 (GRCm39) L23Q probably damaging Het
Btbd2 A T 10: 80,492,045 (GRCm39) F107Y probably benign Het
C7 T A 15: 5,041,464 (GRCm39) T481S probably damaging Het
Capn10 T A 1: 92,867,111 (GRCm39) W114R probably damaging Het
Ccdc121 C T 5: 31,644,976 (GRCm39) T243I probably benign Het
Cdc16 T A 8: 13,809,153 (GRCm39) D39E possibly damaging Het
Cfap74 A T 4: 155,522,665 (GRCm39) I684F Het
Cyp2c70 T A 19: 40,149,121 (GRCm39) N342Y possibly damaging Het
Dnah17 G A 11: 117,971,649 (GRCm39) T2128I possibly damaging Het
Dnah5 A G 15: 28,242,900 (GRCm39) N545S probably benign Het
Dnmt3c A G 2: 153,561,914 (GRCm39) N539S probably damaging Het
Elfn1 A G 5: 139,958,964 (GRCm39) E656G possibly damaging Het
Exd1 A T 2: 119,350,855 (GRCm39) C469S probably damaging Het
F5 A T 1: 164,021,730 (GRCm39) I1402F probably benign Het
Fam186a A G 15: 99,840,973 (GRCm39) L1757P probably damaging Het
Fbxo42 A T 4: 140,895,171 (GRCm39) R45W probably damaging Het
Fer1l5 T C 1: 36,460,696 (GRCm39) V1978A probably benign Het
Fpr1 T A 17: 18,097,618 (GRCm39) I124F probably damaging Het
Fry A T 5: 150,362,251 (GRCm39) D2173V possibly damaging Het
Gabbr2 G T 4: 46,815,684 (GRCm39) T228K possibly damaging Het
Galnt9 A T 5: 110,762,104 (GRCm39) Y414F probably damaging Het
Gask1a T A 9: 121,794,170 (GRCm39) L108Q probably benign Het
Ggt5 A T 10: 75,444,635 (GRCm39) M318L probably benign Het
Glod4 A C 11: 76,125,292 (GRCm39) S156A probably benign Het
Gm5431 A T 11: 48,785,799 (GRCm39) M192K probably benign Het
Golga5 C T 12: 102,446,008 (GRCm39) S421L possibly damaging Het
Gpr18 T C 14: 122,149,992 (GRCm39) D11G probably benign Het
Igf2bp3 C T 6: 49,064,338 (GRCm39) V560I probably benign Het
Igfals A G 17: 25,099,665 (GRCm39) N252S probably damaging Het
Ighv8-5 C T 12: 115,031,416 (GRCm39) C41Y probably damaging Het
Iqgap3 T A 3: 88,016,728 (GRCm39) V1070D possibly damaging Het
Kdr G A 5: 76,122,488 (GRCm39) A479V probably benign Het
Kidins220 T C 12: 25,047,295 (GRCm39) L247P probably damaging Het
Kmt5a A G 5: 124,589,393 (GRCm39) Y197C probably damaging Het
Krt33a A C 11: 99,906,624 (GRCm39) probably null Het
Mageb3 A G 2: 121,785,649 (GRCm39) S18P unknown Het
Mast1 T A 8: 85,650,660 (GRCm39) Y387F probably damaging Het
Mcm5 C T 8: 75,844,168 (GRCm39) S313F probably benign Het
Med17 C T 9: 15,176,719 (GRCm39) V503M possibly damaging Het
Mpp3 A G 11: 101,899,481 (GRCm39) C347R probably benign Het
Mtr A G 13: 12,203,030 (GRCm39) L1191P probably damaging Het
Mybphl A T 3: 108,282,099 (GRCm39) I110F probably damaging Het
Nkx2-1 T A 12: 56,581,802 (GRCm39) D15V probably damaging Het
Nwd2 G A 5: 63,964,568 (GRCm39) W1384* probably null Het
Onecut1 A G 9: 74,770,330 (GRCm39) H251R possibly damaging Het
Or10ak8 T A 4: 118,773,804 (GRCm39) N287Y probably damaging Het
Or13f5 C T 4: 52,825,526 (GRCm39) T43I probably benign Het
Or51a6 A G 7: 102,604,319 (GRCm39) F163S probably damaging Het
Or8b37 A T 9: 37,959,387 (GRCm39) I290L probably benign Het
Palmd T C 3: 116,716,840 (GRCm39) *552W probably null Het
Pcdhgb2 A G 18: 37,823,285 (GRCm39) E92G probably damaging Het
Pcdhgb5 G T 18: 37,865,122 (GRCm39) E306* probably null Het
Peg10 CCACATCAGGATCCACATCAGGATGCACATCAGCATCAGGATCCCCATCAGGATGCACATCAGGATCCACATCAGGATGCACATCAG CCACATCAGGATCCACATCAGGATGCACATCAG 6: 4,756,398 (GRCm39) probably benign Het
Pex1 T A 5: 3,655,653 (GRCm39) L160Q probably damaging Het
Phxr2 A T 10: 98,961,974 (GRCm39) S29T unknown Het
Ppargc1a A G 5: 51,705,852 (GRCm39) probably null Het
Psmb11 T C 14: 54,862,965 (GRCm39) V61A probably damaging Het
Ripor2 A T 13: 24,908,983 (GRCm39) I1034F possibly damaging Het
Rnaset2b T A 17: 7,259,134 (GRCm39) N133K probably damaging Het
Rtn4 A G 11: 29,657,504 (GRCm39) T553A probably damaging Het
Samd9l T A 6: 3,373,578 (GRCm39) T1228S probably benign Het
Sdr42e2 A G 7: 120,430,279 (GRCm39) T379A probably benign Het
Shisal2a C A 4: 108,234,616 (GRCm39) V84L possibly damaging Het
Slc1a1 C T 19: 28,870,283 (GRCm39) A94V probably damaging Het
Snx31 C T 15: 36,534,582 (GRCm39) C197Y probably damaging Het
Tbc1d4 A G 14: 101,744,567 (GRCm39) V353A probably damaging Het
Tbc1d9b A G 11: 50,059,610 (GRCm39) D1004G possibly damaging Het
Tex15 T A 8: 34,066,784 (GRCm39) Y2071* probably null Het
Tnni3k G A 3: 154,645,410 (GRCm39) R492* probably null Het
Tns2 A G 15: 102,012,933 (GRCm39) H7R probably benign Het
Tpbg A T 9: 85,726,252 (GRCm39) T74S probably damaging Het
Trpm6 A G 19: 18,869,466 (GRCm39) N2018D probably benign Het
Trub2 A T 2: 29,669,833 (GRCm39) probably null Het
Vps13d A G 4: 144,813,305 (GRCm39) F3324L Het
Wdr20rt A T 12: 65,273,707 (GRCm39) Q390L probably benign Het
Wdr49 T A 3: 75,240,561 (GRCm39) D436V probably damaging Het
Zfp111 C T 7: 23,898,543 (GRCm39) G357D probably damaging Het
Zfp668 A G 7: 127,466,113 (GRCm39) V357A 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
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
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'- CTTTGCTTCTATAGGGCAGAGG -3'
(R):5'- GAGCAAACTCGTTGATGTGGTG -3'

Sequencing Primer
(F):5'- TGCTTCTATAGGGCAGAGGATAATG -3'
(R):5'- TTGCAGTGAAGGCTCATCAG -3'
Posted On 2022-11-14