Incidental Mutation 'R7250:Top2b'
ID 563871
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
MMRRC Submission 045350-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.924) question?
Stock # R7250 (G1)
Quality Score 225.009
Status Not validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 16420411 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Threonine to Isoleucine at position 1274 (T1274I)
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: T1274I

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: T1274I

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 probably benign
Transcript: ENSMUST00000160501
SMART Domains Protein: ENSMUSP00000124889
Gene: ENSMUSG00000017485

DomainStartEndE-ValueType
TOP4c 2 222 3.97e-12 SMART
Predicted Effect unknown
Transcript: ENSMUST00000161693
AA Change: T148I
SMART Domains Protein: ENSMUSP00000123992
Gene: ENSMUSG00000017485
AA Change: T148I

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: 99.7%
  • 20x: 99.0%
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: 102 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930480E11Rik G T X: 77,414,311 (GRCm39) M345I probably benign Het
Actl7b T A 4: 56,741,035 (GRCm39) M108L probably benign Het
Adgrf3 T A 5: 30,400,680 (GRCm39) I934L probably damaging Het
Adprm A G 11: 66,932,450 (GRCm39) V153A probably benign Het
Aif1l G A 2: 31,859,764 (GRCm39) V109M probably damaging Het
Asphd1 T A 7: 126,545,942 (GRCm39) E307V probably damaging Het
Ate1 T A 7: 130,121,701 (GRCm39) probably benign Het
Borcs7 A G 19: 46,688,047 (GRCm39) H64R probably damaging Het
C1qtnf1 A G 11: 118,339,176 (GRCm39) *282W probably null Het
Cacna1c A G 6: 118,574,966 (GRCm39) C1985R Het
Cacna1c A T 6: 118,673,412 (GRCm39) V647E Het
Cacna1d A G 14: 29,797,108 (GRCm39) S1497P probably damaging Het
Cacna1e T A 1: 154,576,235 (GRCm39) I133F possibly damaging Het
Ccdc63 A T 5: 122,260,906 (GRCm39) L206H probably damaging Het
Cenatac A G 9: 44,323,748 (GRCm39) probably null Het
Cspg4b T G 13: 113,455,349 (GRCm39) I465R Het
D430041D05Rik T C 2: 104,086,961 (GRCm39) T672A possibly damaging Het
D630045J12Rik G T 6: 38,119,546 (GRCm39) T1732K possibly damaging Het
D930020B18Rik T C 10: 121,507,736 (GRCm39) I158T probably damaging Het
Ddx52 G A 11: 83,835,392 (GRCm39) G106D probably benign Het
Dock2 A G 11: 34,586,032 (GRCm39) V550A probably benign Het
Dock2 C T 11: 34,586,120 (GRCm39) D521N probably damaging Het
F13b T C 1: 139,444,227 (GRCm39) probably null Het
Fchsd2 A G 7: 100,908,892 (GRCm39) K431R possibly damaging Het
Fez1 C T 9: 36,779,090 (GRCm39) R256C probably damaging Het
Gjd4 T A 18: 9,280,391 (GRCm39) Q229L probably benign Het
Gpr45 T A 1: 43,071,531 (GRCm39) I58N probably damaging Het
Gstm1 T A 3: 107,923,709 (GRCm39) I99F probably damaging Het
Gtpbp8 T A 16: 44,564,225 (GRCm39) T149S probably damaging Het
H2-Ab1 A G 17: 34,486,481 (GRCm39) D180G probably damaging Het
Hdhd5 A G 6: 120,494,016 (GRCm39) I188T possibly damaging Het
Hfm1 T C 5: 107,052,197 (GRCm39) I300V probably benign Het
Hnrnpr T G 4: 136,059,746 (GRCm39) D283E probably benign Het
Hsp90b1 T C 10: 86,527,572 (GRCm39) E768G unknown Het
Kcna4 C A 2: 107,126,663 (GRCm39) Q466K possibly damaging Het
Kcnk6 A G 7: 28,931,619 (GRCm39) L97P probably benign Het
Kics2 T C 10: 121,581,376 (GRCm39) S126P possibly damaging Het
Klf5 A G 14: 99,536,455 (GRCm39) S9G probably benign Het
Kmt2c C A 5: 25,504,489 (GRCm39) K3606N probably damaging Het
Kmt2c T C 5: 25,514,805 (GRCm39) T3013A probably benign Het
Lancl1 A G 1: 67,048,458 (GRCm39) Y207H possibly damaging Het
Lipe G C 7: 25,088,085 (GRCm39) probably benign Het
Lrrc66 T A 5: 73,768,224 (GRCm39) H239L probably benign Het
Ltbp2 C T 12: 84,834,166 (GRCm39) W1441* probably null Het
Man2a1 T C 17: 64,943,583 (GRCm39) S213P probably benign Het
Mapre2 C T 18: 23,991,119 (GRCm39) A171V possibly damaging Het
Mdn1 T A 4: 32,695,427 (GRCm39) D1155E probably damaging Het
Mki67 T C 7: 135,301,053 (GRCm39) D1327G possibly damaging Het
Mx2 T C 16: 97,348,664 (GRCm39) I279T probably damaging Het
Myo5c A G 9: 75,169,497 (GRCm39) T441A probably damaging Het
Nlrp9a T G 7: 26,258,143 (GRCm39) V587G possibly damaging Het
Npas2 A T 1: 39,377,188 (GRCm39) T517S probably damaging Het
Npy1r T C 8: 67,157,712 (GRCm39) S341P probably benign Het
Ntm A G 9: 29,322,988 (GRCm39) W11R probably benign Het
Nxpe2 A T 9: 48,238,096 (GRCm39) I53N possibly damaging Het
Onecut2 T C 18: 64,519,511 (GRCm39) F443L probably benign Het
Or10g6 T A 9: 39,934,050 (GRCm39) Y120* probably null Het
Or2r2 A G 6: 42,463,689 (GRCm39) V146A probably benign Het
Or52ac1 A T 7: 104,245,738 (GRCm39) Y217N probably damaging Het
Parp2 T A 14: 51,054,801 (GRCm39) V248E probably benign Het
Pcdh12 C A 18: 38,415,029 (GRCm39) V699L probably benign Het
Pja2 G A 17: 64,616,451 (GRCm39) P148L probably benign Het
Poglut3 C T 9: 53,301,821 (GRCm39) Q158* probably null Het
Ppip5k2 T G 1: 97,673,187 (GRCm39) D415A probably benign Het
Prss47 A G 13: 65,200,355 (GRCm39) S74P probably benign Het
Ptprg G T 14: 12,166,767 (GRCm38) M723I probably benign Het
Qsox2 A T 2: 26,118,444 (GRCm39) I109N probably damaging Het
Ranbp3l A G 15: 9,041,853 (GRCm39) E217G probably benign Het
Rgl2 C T 17: 34,152,403 (GRCm39) R367W probably damaging Het
Rgs12 T A 5: 35,122,841 (GRCm39) F208Y probably damaging Het
Rin3 C T 12: 102,334,893 (GRCm39) T268I unknown Het
Rttn T A 18: 89,007,647 (GRCm39) D427E probably benign Het
Samd13 G A 3: 146,352,079 (GRCm39) P91S probably benign Het
Samd9l T C 6: 3,374,201 (GRCm39) D1020G possibly damaging Het
Sec62 T G 3: 30,866,496 (GRCm39) L201V possibly damaging Het
Setdb1 C T 3: 95,261,852 (GRCm39) probably null Het
Sf3a3 A T 4: 124,616,708 (GRCm39) T197S probably benign Het
Slc20a1 A T 2: 129,051,844 (GRCm39) I618F possibly damaging Het
Slc38a3 A T 9: 107,533,865 (GRCm39) M186K probably benign Het
Slc39a13 T C 2: 90,893,503 (GRCm39) T319A probably benign Het
Slc44a4 T C 17: 35,137,520 (GRCm39) probably null Het
St3gal1 A C 15: 66,978,578 (GRCm39) D314E possibly damaging Het
Suclg1 A G 6: 73,248,074 (GRCm39) N265S probably benign Het
Sult2b1 A T 7: 45,433,361 (GRCm39) V2D unknown Het
Supv3l1 T A 10: 62,280,846 (GRCm39) I182F probably damaging Het
Tcp11l2 T C 10: 84,423,105 (GRCm39) probably null Het
Tenm2 C A 11: 35,963,625 (GRCm39) L935F probably damaging Het
Tnks T A 8: 35,318,912 (GRCm39) I790F probably damaging Het
Tpi1 A T 6: 124,789,441 (GRCm39) I178N probably damaging Het
Trav9d-1 A T 14: 53,030,153 (GRCm39) S86C probably damaging Het
Treml2 A G 17: 48,616,155 (GRCm39) E265G probably benign Het
Trpm7 A T 2: 126,668,685 (GRCm39) S744T possibly damaging Het
Usp33 T A 3: 152,097,999 (GRCm39) L909* probably null Het
Vcan A G 13: 89,869,805 (GRCm39) I210T probably damaging Het
Vcan A T 13: 89,879,576 (GRCm39) probably null Het
Vsig10l A T 7: 43,113,099 (GRCm39) D17V probably benign Het
Zbtb7b T A 3: 89,286,976 (GRCm39) T498S probably benign Het
Zfp366 T A 13: 99,366,076 (GRCm39) H412Q probably damaging Het
Zfp53 C A 17: 21,729,840 (GRCm39) D624E probably damaging Het
Zfp827 A T 8: 79,916,721 (GRCm39) D432V Het
Zic1 T C 9: 91,247,028 (GRCm39) T15A probably damaging Het
Zswim8 T C 14: 20,770,036 (GRCm39) C1368R probably damaging 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
R7247:Top2b UTSW 14 16,416,962 (GRCm38) missense probably benign 0.08
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'- TTTGCTAACCAAGATCCTGGC -3'
(R):5'- GTGAAGCTGTTCTATGAAAGGTTC -3'

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