Incidental Mutation 'R5685:Top2b'
ID 443305
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
Accession Numbers
Essential gene? Probably essential (E-score: 0.924) question?
Stock # R5685 (G1)
Quality Score 225
Status Not validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 16413666 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Tryptophan to Arginine at position 1045 (W1045R)
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: W1045R

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: W1045R

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
Coding Region Coverage
  • 1x: 99.6%
  • 3x: 98.8%
  • 10x: 97.0%
  • 20x: 94.1%
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: 63 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700028J19Rik T A 7: 43,879,974 (GRCm39) probably benign Het
Abcb5 A T 12: 118,896,348 (GRCm39) probably null Het
Abcg1 G T 17: 31,317,260 (GRCm39) E191* probably null Het
Als2 A G 1: 59,218,250 (GRCm39) Y1263H possibly damaging Het
Amer2 T A 14: 60,617,026 (GRCm39) L281* probably null Het
Anxa6 T C 11: 54,887,196 (GRCm39) N361D probably benign Het
Ap1g1 A T 8: 110,564,415 (GRCm39) N320I probably damaging Het
Aqr T C 2: 113,986,746 (GRCm39) D208G possibly damaging Het
Arnt2 T C 7: 83,912,473 (GRCm39) T545A probably benign Het
Aspm G A 1: 139,415,026 (GRCm39) V2701I probably benign Het
Atad2 A G 15: 57,980,194 (GRCm39) V106A possibly damaging Het
Bbs2 A C 8: 94,814,061 (GRCm39) F186V probably damaging Het
Catsperg2 G A 7: 29,400,613 (GRCm39) P247L probably damaging Het
Cfap57 G T 4: 118,426,656 (GRCm39) Q1098K probably benign Het
Cxcr6 A G 9: 123,639,811 (GRCm39) T271A probably benign Het
Dock1 A G 7: 134,374,091 (GRCm39) E579G probably benign Het
Frem3 A G 8: 81,421,932 (GRCm39) T2111A probably damaging Het
Galnt1 A T 18: 24,397,586 (GRCm39) D229V possibly damaging Het
Gbp2b A C 3: 142,313,919 (GRCm39) M400L probably benign Het
Gm1123 T A 9: 98,891,486 (GRCm39) probably null Het
Gtpbp6 T C 5: 110,252,805 (GRCm39) H349R probably damaging Het
Hyal5 A G 6: 24,876,691 (GRCm39) K188R probably benign Het
Insrr T C 3: 87,707,803 (GRCm39) probably null Het
Kcnn1 A T 8: 71,305,374 (GRCm39) C322S probably damaging Het
Kdelr1 GTCTA G 7: 45,531,041 (GRCm39) probably null Het
Kif23 T C 9: 61,852,691 (GRCm39) T8A probably benign Het
Lrrk2 A T 15: 91,687,504 (GRCm39) R2198* probably null Het
Mcl1 T G 3: 95,567,109 (GRCm39) D177E possibly damaging Het
Mrps11 A T 7: 78,441,628 (GRCm39) T137S probably benign Het
Mtbp A G 15: 55,426,168 (GRCm39) Y90C probably damaging Het
Nkpd1 C T 7: 19,257,498 (GRCm39) Q276* probably null Het
Nxt1 G T 2: 148,517,673 (GRCm39) W138L possibly damaging Het
Or5al1 T C 2: 85,990,139 (GRCm39) T192A probably damaging Het
Or5h17 T A 16: 58,820,709 (GRCm39) F220L probably benign Het
Or5t17 T A 2: 86,832,621 (GRCm39) S103T probably benign Het
Osbpl7 C A 11: 96,951,103 (GRCm39) P478H probably damaging Het
Phf8-ps T A 17: 33,285,746 (GRCm39) H352L probably benign Het
Pitpna T A 11: 75,511,095 (GRCm39) F222I probably damaging Het
Plekhh2 A T 17: 84,877,310 (GRCm39) R552W probably damaging Het
Plxnb2 C T 15: 89,051,235 (GRCm39) R328H probably damaging Het
Pmaip1 C T 18: 66,594,055 (GRCm39) T65I probably benign Het
Ppil4 T G 10: 7,674,186 (GRCm39) I110S probably damaging Het
Prpf38a A G 4: 108,427,351 (GRCm39) probably null Het
Psme4 G A 11: 30,759,837 (GRCm39) G320D probably damaging Het
Rab17 C A 1: 90,886,679 (GRCm39) R191L probably benign Het
Rhag A T 17: 41,142,222 (GRCm39) M222L possibly damaging Het
Rims2 A T 15: 39,300,602 (GRCm39) H111L possibly damaging Het
Setx T C 2: 29,061,292 (GRCm39) Y2234H probably damaging Het
Slc2a8 T C 2: 32,871,801 (GRCm39) I51V possibly damaging Het
Slc34a1 T C 13: 55,549,085 (GRCm39) probably null Het
Slf1 T C 13: 77,231,598 (GRCm39) T594A possibly damaging Het
Sox6 A T 7: 115,178,392 (GRCm39) probably null Het
Spata13 C T 14: 60,928,652 (GRCm39) S70L probably benign Het
Stard13 A G 5: 150,986,592 (GRCm39) I188T possibly damaging Het
Stard9 A G 2: 120,535,803 (GRCm39) D4020G probably damaging Het
Tdp1 A G 12: 99,868,611 (GRCm39) K255R possibly damaging Het
Tns2 G T 15: 102,015,538 (GRCm39) A124S probably benign Het
Trav12-2 T C 14: 53,854,122 (GRCm39) V32A probably damaging Het
Vps13c G T 9: 67,870,455 (GRCm39) R3198L possibly damaging Het
Wee1 TCCCC TCCC 7: 109,723,776 (GRCm39) probably null Het
Zfp52 T A 17: 21,782,013 (GRCm39) S620R probably benign Het
Zfp62 T A 11: 49,107,044 (GRCm39) C378* probably null Het
Zfp638 C A 6: 83,906,969 (GRCm39) P378H 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
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'- AAGTGGTTTCAGGGGTAGTACATATTC -3'
(R):5'- GGGTCAGATTCATAACCTCTCTG -3'

Sequencing Primer
(F):5'- GTAGGTACTCTTTGATCATATGG -3'
(R):5'- ACCTCTCTGGACTAACATTTGAATC -3'
Posted On 2016-11-09