Incidental Mutation 'R7247:Top2b'
ID 563633
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
MMRRC Submission 045310-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.929) question?
Stock # R7247 (G1)
Quality Score 225.009
Status Not validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16416962 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 1161 (V1161A)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000161693]
AlphaFold Q64511
Predicted Effect probably benign
Transcript: ENSMUST00000017629
AA Change: V1161A

PolyPhen 2 Score 0.082 (Sensitivity: 0.93; Specificity: 0.85)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: V1161A

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
SMART Domains Protein: ENSMUSP00000124889
Gene: ENSMUSG00000017485
AA Change: V207A

DomainStartEndE-ValueType
TOP4c 2 222 3.97e-12 SMART
Predicted Effect probably damaging
Transcript: ENSMUST00000161693
AA Change: V100A

PolyPhen 2 Score 0.961 (Sensitivity: 0.78; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000123992
Gene: ENSMUSG00000017485
AA Change: V100A

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
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.6%
  • 20x: 98.6%
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, 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: 70 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca13 A G 11: 9,240,732 (GRCm39) E865G probably benign Het
Actrt2 A C 4: 154,751,880 (GRCm39) D85E probably benign Het
Ankrd55 A G 13: 112,472,787 (GRCm39) E153G probably damaging Het
Arfgef3 T A 10: 18,501,139 (GRCm39) H1037L probably benign Het
Camk2a A G 18: 61,076,277 (GRCm39) Y85C unknown Het
Caprin1 A T 2: 103,609,819 (GRCm39) V153E possibly damaging Het
Caskin2 G A 11: 115,692,722 (GRCm39) P688S probably benign Het
Catsper2 TAGGATGGCTTTTCTCAGGATAGCTTTTCTCAGGATGGCTTTTCTCAGGATAGCTTTTCTCAGGATGGCTTTTCTCAGGATAGCTTTTCT TAGGATGGCTTTTCTCAGGATAGCTTTTCTCAGGATGGCTTTTCTCAGGATAGCTTTTCT 2: 121,228,053 (GRCm39) probably benign Het
Ccdc116 T C 16: 16,957,555 (GRCm39) T535A possibly damaging Het
Cdh9 G A 15: 16,778,341 (GRCm39) R52H probably damaging Het
Cdk5rap2 A G 4: 70,255,666 (GRCm39) L406S probably damaging Het
Cep350 A G 1: 155,786,499 (GRCm39) M1449T probably damaging Het
Chst8 T A 7: 34,375,361 (GRCm39) K159N probably damaging Het
Dcdc2a A G 13: 25,286,374 (GRCm39) H136R probably benign Het
Dip2a C T 10: 76,108,366 (GRCm39) probably null Het
Dock2 G A 11: 34,605,340 (GRCm39) R260* probably null Het
Dscam A G 16: 96,622,008 (GRCm39) V481A probably damaging Het
E130308A19Rik A G 4: 59,690,502 (GRCm39) D112G probably damaging Het
Ezh2 T C 6: 47,510,708 (GRCm39) K634E probably damaging Het
Fcgr2b A G 1: 170,793,269 (GRCm39) probably null Het
Fgfrl1 T C 5: 108,851,365 (GRCm39) V94A possibly damaging Het
Gpr156 C A 16: 37,768,103 (GRCm39) N6K probably damaging Het
Gsdmc2 A T 15: 63,705,183 (GRCm39) F177I probably benign Het
Igkv4-54 T A 6: 69,608,842 (GRCm39) S26C probably damaging Het
Iglc3 T C 16: 18,884,191 (GRCm39) H80R Het
Immp1l G A 2: 105,767,401 (GRCm39) G87S probably damaging Het
Itgav A T 2: 83,555,179 (GRCm39) D34V probably damaging Het
Lrp1b G A 2: 41,159,224 (GRCm39) T1686I Het
Ltn1 T C 16: 87,206,275 (GRCm39) D935G probably benign Het
Map3k8 T C 18: 4,334,036 (GRCm39) D352G probably damaging Het
Map3k9 T C 12: 81,772,604 (GRCm39) K610E possibly damaging Het
Marchf4 G T 1: 72,491,637 (GRCm39) Y211* probably null Het
Marf1 A T 16: 13,944,957 (GRCm39) L1304Q probably damaging Het
Matcap1 A T 8: 106,011,331 (GRCm39) Y268N probably benign Het
Mecom A G 3: 30,194,505 (GRCm39) V5A unknown Het
Mep1a A T 17: 43,785,995 (GRCm39) V711D possibly damaging Het
Naca T A 10: 127,878,467 (GRCm39) D1166E unknown Het
Neb G T 2: 52,148,753 (GRCm39) P2598Q probably damaging Het
Notch4 A T 17: 34,791,491 (GRCm39) E546V probably damaging Het
Nudt18 A G 14: 70,815,422 (GRCm39) T12A unknown Het
Nvl A C 1: 180,939,851 (GRCm39) probably null Het
Obscn G T 11: 58,994,144 (GRCm39) C1579* probably null Het
Or4b13 G A 2: 90,083,165 (GRCm39) P56S probably damaging Het
Or51e2 T C 7: 102,391,551 (GRCm39) I220V probably damaging Het
Or6c5b T C 10: 129,246,051 (GRCm39) V272A probably damaging Het
Or7g33 A T 9: 19,448,629 (GRCm39) I199K probably benign Het
Or8g19 T A 9: 39,056,153 (GRCm39) Y252* probably null Het
Oxa1l A T 14: 54,598,312 (GRCm39) M1L probably benign Het
Paqr9 A G 9: 95,442,246 (GRCm39) T79A possibly damaging Het
Plec A T 15: 76,061,543 (GRCm39) V2798E probably damaging Het
Potefam3f A G 8: 20,479,022 (GRCm39) N10S Het
Ptpn4 A T 1: 119,617,764 (GRCm39) *557R probably null Het
Ptprt T C 2: 161,375,443 (GRCm39) E1379G probably benign Het
Rad18 G T 6: 112,642,286 (GRCm39) T327K possibly damaging Het
Rps2 T A 17: 24,939,554 (GRCm39) I75N possibly damaging Het
Scgb2b2 A T 7: 31,003,021 (GRCm39) R39W probably damaging Het
Sh3d21 A G 4: 126,045,908 (GRCm39) F307S probably benign Het
Snap91 A G 9: 86,674,669 (GRCm39) V507A unknown Het
Srgap1 T A 10: 121,705,695 (GRCm39) Y243F probably damaging Het
Stim1 T A 7: 102,070,739 (GRCm39) probably null Het
Tpcn1 T C 5: 120,723,315 (GRCm39) D16G possibly damaging Het
Trank1 A T 9: 111,196,580 (GRCm39) I1535F probably damaging Het
Txnrd2 T C 16: 18,274,822 (GRCm39) F278L probably damaging Het
Ufl1 A T 4: 25,254,637 (GRCm39) D579E probably damaging Het
Vps45 T C 3: 95,948,717 (GRCm39) N346S probably benign Het
Vps51 T A 19: 6,127,419 (GRCm39) probably benign Het
Zfp536 T C 7: 37,268,631 (GRCm39) N262D probably benign Het
Zmynd10 A G 9: 107,425,976 (GRCm39) I103M possibly damaging Het
Zswim1 C T 2: 164,667,719 (GRCm39) H324Y possibly damaging Het
Zxdc T C 6: 90,361,155 (GRCm39) W507R unknown 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
R0092:Top2b UTSW 14 16,409,263 (GRCm38) missense probably damaging 1.00
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
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'- TTCAGGAACTCCTTCAGGCC -3'
(R):5'- CAGCATACAAGGTAGGTTCAATTG -3'

Sequencing Primer
(F):5'- CGAAAGTATGAACATTTGTGGGTTAC -3'
(R):5'- GGCCTTACACTAAGCTATATTGCCAG -3'
Posted On 2019-06-26