Incidental Mutation 'R0092:Top2b'
ID 20315
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
MMRRC Submission 038379-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.924) question?
Stock # R0092 (G1)
Quality Score 225
Status Validated (trace)
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 16409263 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Arginine to Glutamine at position 802 (R802Q)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000161693]
AlphaFold Q64511
Predicted Effect probably damaging
Transcript: ENSMUST00000017629
AA Change: R802Q

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: R802Q

DomainStartEndE-ValueType
Blast:TOP2c 32 70 7e-10 BLAST
HATPase_c 85 234 1.91e-2 SMART
TOP2c 89 679 N/A SMART
TOP4c 702 1175 2.55e-230 SMART
low complexity region 1201 1215 N/A INTRINSIC
low complexity region 1287 1299 N/A INTRINSIC
low complexity region 1324 1336 N/A INTRINSIC
low complexity region 1360 1382 N/A INTRINSIC
Pfam:DTHCT 1495 1597 4.6e-31 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000159302
SMART Domains Protein: ENSMUSP00000123789
Gene: ENSMUSG00000017485

DomainStartEndE-ValueType
TOP4c 1 177 4.06e-6 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000160501
SMART Domains Protein: ENSMUSP00000124889
Gene: ENSMUSG00000017485

DomainStartEndE-ValueType
TOP4c 2 222 3.97e-12 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000161693
SMART Domains Protein: ENSMUSP00000123992
Gene: ENSMUSG00000017485

DomainStartEndE-ValueType
Pfam:DNA_topoisoIV 1 117 1.2e-12 PFAM
low complexity region 161 173 N/A INTRINSIC
low complexity region 198 210 N/A INTRINSIC
low complexity region 234 256 N/A INTRINSIC
Meta Mutation Damage Score 0.8744 question?
Coding Region Coverage
  • 1x: 98.9%
  • 3x: 97.9%
  • 10x: 95.1%
  • 20x: 88.6%
Validation Efficiency 99% (112/113)
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, beta, is localized to chromosome 3 and the alpha form is localized to chromosome 17. 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. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2016]
PHENOTYPE: Homozygous null mice exhibit abnormal innervation. Offspring die shortly after birth due to respiratory failure. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 94 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcg2 T A 6: 58,662,762 (GRCm39) S535T probably benign Het
Acad11 A T 9: 103,967,540 (GRCm39) probably benign Het
Acadm A T 3: 153,647,512 (GRCm39) probably benign Het
Acot12 T A 13: 91,889,684 (GRCm39) M12K probably damaging Het
Actr2 A T 11: 20,044,308 (GRCm39) N99K probably benign Het
Adam2 G A 14: 66,291,336 (GRCm39) A314V probably damaging Het
Agl C T 3: 116,587,453 (GRCm39) R34Q probably damaging Het
Agrn C T 4: 156,263,410 (GRCm39) R338H probably damaging Het
AI661453 A G 17: 47,778,440 (GRCm39) probably benign Het
Alpk3 A G 7: 80,742,301 (GRCm39) D706G probably benign Het
Apbb1 T C 7: 105,208,361 (GRCm39) E648G probably damaging Het
Astn2 C A 4: 66,322,219 (GRCm39) A127S unknown Het
Asxl2 T C 12: 3,546,313 (GRCm39) S366P probably benign Het
Bdh1 A T 16: 31,266,380 (GRCm39) K92* probably null Het
Bltp1 A G 3: 37,082,308 (GRCm39) D3790G probably benign Het
Cacna1g C T 11: 94,348,090 (GRCm39) S666N probably damaging Het
Ces2b A G 8: 105,563,144 (GRCm39) T361A possibly damaging Het
Col6a4 T A 9: 105,890,513 (GRCm39) E1927V probably benign Het
Ctnnb1 T G 9: 120,781,929 (GRCm39) I314S possibly damaging Het
Cyp2c66 T C 19: 39,172,224 (GRCm39) probably benign Het
Dennd4c T A 4: 86,699,844 (GRCm39) F232I probably damaging Het
Dennd5a T C 7: 109,499,013 (GRCm39) N950S possibly damaging Het
Dhx30 T C 9: 109,914,078 (GRCm39) N14S possibly damaging Het
Dip2b T A 15: 100,100,146 (GRCm39) V1004D probably damaging Het
Dnah1 A C 14: 30,993,566 (GRCm39) S2872A probably benign Het
Dnajc10 T C 2: 80,156,026 (GRCm39) V233A probably damaging Het
E230025N22Rik A G 18: 36,822,277 (GRCm39) L162P probably damaging Het
Elmod3 T C 6: 72,543,792 (GRCm39) D333G probably benign Het
Epb41l3 T A 17: 69,593,745 (GRCm39) M846K probably damaging Het
Frem2 A G 3: 53,497,217 (GRCm39) Y1766H probably benign Het
Fxr2 T C 11: 69,532,972 (GRCm39) probably benign Het
Gmpr2 A G 14: 55,915,402 (GRCm39) R258G probably benign Het
Helb T C 10: 119,925,713 (GRCm39) Y888C probably damaging Het
Hephl1 TTCCAGATGTCC TTCC 9: 15,001,899 (GRCm39) probably null Het
Hipk2 T C 6: 38,720,164 (GRCm39) D482G probably damaging Het
Itgb4 G T 11: 115,869,950 (GRCm39) R44L probably damaging Het
Itih1 T C 14: 30,662,820 (GRCm39) probably benign Het
Kit T A 5: 75,808,414 (GRCm39) S719R possibly damaging Het
Krt13 G A 11: 100,012,258 (GRCm39) Q22* probably null Het
L3mbtl4 A C 17: 68,732,698 (GRCm39) R59S probably benign Het
Lpp A G 16: 24,580,352 (GRCm39) S23G probably benign Het
Magi3 G A 3: 103,958,280 (GRCm39) Q602* probably null Het
Man2a1 A G 17: 64,966,079 (GRCm39) probably benign Het
Muc5ac A G 7: 141,372,367 (GRCm39) E2667G possibly damaging Het
Myef2l G A 3: 10,153,633 (GRCm39) C134Y possibly damaging Het
Myo15b C G 11: 115,753,812 (GRCm39) S842C possibly damaging Het
Naf1 T A 8: 67,341,760 (GRCm39) S462T probably benign Het
Necab3 T C 2: 154,400,659 (GRCm39) D34G possibly damaging Het
Nisch C A 14: 30,913,410 (GRCm39) probably benign Het
Nlrc5 T C 8: 95,216,222 (GRCm39) probably benign Het
Nmt1 T C 11: 102,937,319 (GRCm39) F119L probably damaging Het
Nod1 T G 6: 54,921,526 (GRCm39) D264A probably damaging Het
Nol8 C T 13: 49,815,923 (GRCm39) A677V possibly damaging Het
Nt5e T A 9: 88,252,338 (GRCm39) F567I probably benign Het
Obscn A T 11: 58,942,073 (GRCm39) M4434K possibly damaging Het
Opa1 A T 16: 29,444,412 (GRCm39) D866V probably damaging Het
Or10a3m T C 7: 108,313,031 (GRCm39) V145A probably benign Het
Or10al3 T G 17: 38,011,696 (GRCm39) L45R probably damaging Het
Or10p1 A G 10: 129,444,090 (GRCm39) S87P probably damaging Het
Or1j21 A G 2: 36,683,508 (GRCm39) T87A probably benign Het
Or51ai2 T C 7: 103,586,934 (GRCm39) S116P probably damaging Het
Otop1 T A 5: 38,457,174 (GRCm39) V311E probably damaging Het
Pcsk2 A G 2: 143,642,944 (GRCm39) D407G probably damaging Het
Pdcd1 A G 1: 93,980,149 (GRCm39) W23R possibly damaging Het
Pigp A G 16: 94,166,321 (GRCm39) V129A probably damaging Het
Pik3r5 A G 11: 68,383,629 (GRCm39) R483G probably benign Het
Pink1 A G 4: 138,047,309 (GRCm39) V225A probably benign Het
Plcl1 C G 1: 55,735,924 (GRCm39) Q422E probably damaging Het
Plec T C 15: 76,067,943 (GRCm39) E1222G probably benign Het
Polr1a T C 6: 71,944,439 (GRCm39) probably benign Het
Prokr2 C T 2: 132,215,517 (GRCm39) V154M probably damaging Het
Rasgrp4 A G 7: 28,844,557 (GRCm39) R280G possibly damaging Het
Rmnd5b T C 11: 51,520,419 (GRCm39) E8G possibly damaging Het
Sbf2 T A 7: 109,920,013 (GRCm39) probably benign Het
Sec23b A G 2: 144,408,830 (GRCm39) M172V probably benign Het
Setx T C 2: 29,036,305 (GRCm39) V930A probably benign Het
Sft2d2 G A 1: 165,006,829 (GRCm39) A159V possibly damaging Het
Sh3gl1 G T 17: 56,325,088 (GRCm39) R250S probably benign Het
Skor1 C A 9: 63,053,277 (GRCm39) D231Y probably damaging Het
Slc24a1 T G 9: 64,856,034 (GRCm39) E291A unknown Het
Slc28a2b G T 2: 122,348,078 (GRCm39) probably benign Het
Smc1b A T 15: 84,951,925 (GRCm39) probably benign Het
Tbccd1 A T 16: 22,644,844 (GRCm39) N177K possibly damaging Het
Tdp1 T A 12: 99,921,248 (GRCm39) Y595N probably damaging Het
Tle5 G A 10: 81,397,054 (GRCm39) G10D possibly damaging Het
Tmem108 T C 9: 103,366,504 (GRCm39) K496E possibly damaging Het
Tmprss7 T C 16: 45,487,959 (GRCm39) D490G probably damaging Het
Tnrc6b A T 15: 80,802,729 (GRCm39) N1511Y probably damaging Het
Trip10 A T 17: 57,557,798 (GRCm39) K27N possibly damaging Het
Txlnb A G 10: 17,718,503 (GRCm39) N445D possibly damaging Het
Txnrd1 T A 10: 82,715,636 (GRCm39) I159N probably damaging Het
Ulk1 C A 5: 110,944,193 (GRCm39) A164S probably null Het
Vmn2r83 T C 10: 79,327,798 (GRCm39) V802A probably damaging Het
Zbtb4 A G 11: 69,670,177 (GRCm39) I967V probably benign Het
Other mutations in Top2b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00430:Top2b APN 14 16,422,692 (GRCm38) missense probably benign 0.00
IGL00730:Top2b APN 14 16,389,831 (GRCm38) missense probably damaging 1.00
IGL00917:Top2b APN 14 16,407,354 (GRCm38) missense probably benign 0.05
IGL01959:Top2b APN 14 16,422,695 (GRCm38) missense probably benign 0.19
IGL02019:Top2b APN 14 16,409,965 (GRCm38) missense probably benign 0.44
IGL02119:Top2b APN 14 16,406,733 (GRCm38) missense probably damaging 1.00
IGL02136:Top2b APN 14 16,407,103 (GRCm38) unclassified probably benign
IGL02148:Top2b APN 14 16,400,488 (GRCm38) missense probably damaging 1.00
IGL02496:Top2b APN 14 16,387,335 (GRCm38) missense probably benign
IGL02503:Top2b APN 14 16,407,163 (GRCm38) missense possibly damaging 0.92
IGL02672:Top2b APN 14 16,409,166 (GRCm38) unclassified probably benign
IGL02721:Top2b APN 14 16,409,236 (GRCm38) missense probably damaging 1.00
IGL02886:Top2b APN 14 16,365,688 (GRCm38) missense possibly damaging 0.73
IGL03252:Top2b APN 14 16,393,163 (GRCm38) missense possibly damaging 0.60
PIT4434001:Top2b UTSW 14 16,423,780 (GRCm38) critical splice donor site probably null
R0201:Top2b UTSW 14 16,383,174 (GRCm38) missense probably damaging 1.00
R0390:Top2b UTSW 14 16,418,442 (GRCm38) missense probably benign 0.00
R0394:Top2b UTSW 14 16,413,556 (GRCm38) splice site probably null
R1159:Top2b UTSW 14 16,430,329 (GRCm38) missense possibly damaging 0.81
R1424:Top2b UTSW 14 16,383,177 (GRCm38) missense probably damaging 1.00
R1519:Top2b UTSW 14 16,408,953 (GRCm38) splice site probably null
R1561:Top2b UTSW 14 16,398,993 (GRCm38) missense possibly damaging 0.80
R1713:Top2b UTSW 14 16,409,823 (GRCm38) missense probably benign 0.05
R1987:Top2b UTSW 14 16,398,916 (GRCm38) missense probably damaging 0.99
R2219:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2287:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2422:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2679:Top2b UTSW 14 16,413,947 (GRCm38) missense probably damaging 1.00
R3687:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3707:Top2b UTSW 14 16,388,447 (GRCm38) missense probably damaging 1.00
R3810:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3812:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3815:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3816:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3818:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4023:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4025:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4026:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4133:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4157:Top2b UTSW 14 16,384,491 (GRCm38) missense probably benign 0.42
R4179:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4180:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4300:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4376:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4377:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4492:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4549:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4550:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4581:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4582:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4628:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4630:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4667:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4668:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4669:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4698:Top2b UTSW 14 16,387,331 (GRCm38) nonsense probably null
R4769:Top2b UTSW 14 16,398,991 (GRCm38) missense probably damaging 1.00
R4809:Top2b UTSW 14 16,383,125 (GRCm38) missense probably benign 0.06
R4899:Top2b UTSW 14 16,387,313 (GRCm38) missense probably damaging 1.00
R5035:Top2b UTSW 14 16,409,966 (GRCm38) missense probably benign 0.01
R5621:Top2b UTSW 14 16,387,280 (GRCm38) missense probably damaging 1.00
R5631:Top2b UTSW 14 16,409,882 (GRCm38) missense probably damaging 1.00
R5685:Top2b UTSW 14 16,413,666 (GRCm38) missense probably damaging 1.00
R5732:Top2b UTSW 14 16,400,106 (GRCm38) missense possibly damaging 0.92
R5939:Top2b UTSW 14 16,422,786 (GRCm38) missense probably damaging 0.96
R6007:Top2b UTSW 14 16,423,779 (GRCm38) critical splice donor site probably null
R6087:Top2b UTSW 14 16,409,864 (GRCm38) missense probably benign 0.14
R6144:Top2b UTSW 14 16,423,740 (GRCm38) missense possibly damaging 0.48
R6196:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6218:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6229:Top2b UTSW 14 16,409,838 (GRCm38) missense probably damaging 1.00
R6249:Top2b UTSW 14 16,399,006 (GRCm38) missense probably damaging 1.00
R6337:Top2b UTSW 14 16,399,026 (GRCm38) missense possibly damaging 0.77
R6353:Top2b UTSW 14 16,416,671 (GRCm38) missense probably damaging 1.00
R6512:Top2b UTSW 14 16,409,854 (GRCm38) missense possibly damaging 0.94
R6573:Top2b UTSW 14 16,398,991 (GRCm38) missense probably damaging 1.00
R6614:Top2b UTSW 14 16,407,142 (GRCm38) nonsense probably null
R6844:Top2b UTSW 14 16,429,383 (GRCm38) missense possibly damaging 0.94
R6848:Top2b UTSW 14 16,409,958 (GRCm38) missense possibly damaging 0.89
R6871:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6895:Top2b UTSW 14 16,413,604 (GRCm38) missense probably benign 0.06
R7162:Top2b UTSW 14 16,416,653 (GRCm38) missense probably benign 0.00
R7247:Top2b UTSW 14 16,416,962 (GRCm38) missense probably benign 0.08
R7250:Top2b UTSW 14 16,420,411 (GRCm38) missense probably benign
R7359:Top2b UTSW 14 16,407,376 (GRCm38) missense probably null 1.00
R7365:Top2b UTSW 14 16,416,649 (GRCm38) missense probably benign 0.04
R7493:Top2b UTSW 14 16,416,605 (GRCm38) missense probably benign 0.00
R7528:Top2b UTSW 14 16,395,427 (GRCm38) nonsense probably null
R7562:Top2b UTSW 14 16,412,946 (GRCm38) missense probably benign 0.04
R7594:Top2b UTSW 14 16,428,587 (GRCm38) missense probably benign
R7670:Top2b UTSW 14 16,416,620 (GRCm38) missense possibly damaging 0.61
R7894:Top2b UTSW 14 16,413,081 (GRCm38) missense possibly damaging 0.68
R8031:Top2b UTSW 14 16,412,986 (GRCm38) missense probably damaging 0.98
R8150:Top2b UTSW 14 16,393,291 (GRCm38) missense probably damaging 0.99
R8214:Top2b UTSW 14 16,383,177 (GRCm38) missense probably damaging 1.00
R8299:Top2b UTSW 14 16,386,123 (GRCm38) missense possibly damaging 0.68
R8977:Top2b UTSW 14 16,393,239 (GRCm38) missense probably benign 0.36
R9562:Top2b UTSW 14 16,365,718 (GRCm38) missense probably benign 0.09
R9565:Top2b UTSW 14 16,365,718 (GRCm38) missense probably benign 0.09
R9798:Top2b UTSW 14 16,389,845 (GRCm38) missense probably damaging 1.00
X0028:Top2b UTSW 14 16,384,499 (GRCm38) nonsense probably null
Z1176:Top2b UTSW 14 16,395,434 (GRCm38) missense probably damaging 1.00
Z1177:Top2b UTSW 14 16,416,953 (GRCm38) missense probably benign
Predicted Primers PCR Primer
(F):5'- CACTGAAGATGGGATCAACTGAGAACTG -3'
(R):5'- AGGCATATTTCTCCCAAGCACAAGC -3'

Sequencing Primer
(F):5'- TCAATACAAACTGAGGCATAGTTC -3'
(R):5'- TGAAGTACTCTCCCTGAGCAG -3'
Posted On 2013-04-11