Incidental Mutation 'R1519:Top2b'
ID 167318
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: 0.929) question?
Stock # R1519 (G1)
Quality Score 225
Status Not validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation splice site (5 bp from exon)
DNA Base Change (assembly) G to A at 16408953 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000161693]
AlphaFold Q64511
Predicted Effect probably null
Transcript: ENSMUST00000017629
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485

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: 99.1%
  • 3x: 98.3%
  • 10x: 96.4%
  • 20x: 92.9%
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: 84 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700017N19Rik C G 10: 100,439,390 (GRCm39) P187R probably damaging Het
Abhd5 T C 9: 122,208,079 (GRCm39) probably null Het
Acadvl A G 11: 69,905,617 (GRCm39) probably null Het
Actn1 T C 12: 80,251,852 (GRCm39) E75G probably damaging Het
Adam4 A T 12: 81,467,651 (GRCm39) N323K possibly damaging Het
Anks6 G A 4: 47,027,152 (GRCm39) R689W probably damaging Het
Anxa2 T C 9: 69,392,523 (GRCm39) I124T probably damaging Het
Aph1c T C 9: 66,740,547 (GRCm39) T10A probably benign Het
Arhgap40 T A 2: 158,388,721 (GRCm39) W552R probably benign Het
Baz2b C T 2: 59,778,598 (GRCm39) R754H possibly damaging Het
Blmh A G 11: 76,857,607 (GRCm39) Y147C probably damaging Het
C1galt1 C T 6: 7,866,402 (GRCm39) L83F probably damaging Het
Ccdc168 A G 1: 44,096,130 (GRCm39) V1656A probably benign Het
Cdh23 A T 10: 60,215,122 (GRCm39) Y1403N possibly damaging Het
Cic A T 7: 24,993,235 (GRCm39) probably null Het
Coro1b T A 19: 4,200,583 (GRCm39) V200D possibly damaging Het
Csl T A 10: 99,593,817 (GRCm39) E416V probably damaging Het
Cyp3a25 A G 5: 145,938,257 (GRCm39) probably null Het
Dennd2d T A 3: 106,399,875 (GRCm39) F266Y probably damaging Het
Dnah10 A G 5: 124,838,016 (GRCm39) E1072G probably damaging Het
Dnah6 T A 6: 73,026,031 (GRCm39) K3435N probably damaging Het
Dnah9 G A 11: 65,772,587 (GRCm39) A3715V probably damaging Het
Fam186a G A 15: 99,845,536 (GRCm39) S236L unknown Het
Frs3 A G 17: 48,013,903 (GRCm39) T199A probably benign Het
Fsd1 A G 17: 56,300,870 (GRCm39) N243S probably benign Het
Gabra5 A C 7: 57,058,641 (GRCm39) L369R probably benign Het
Gask1b A G 3: 79,848,771 (GRCm39) N506D possibly damaging Het
Gins4 A G 8: 23,724,792 (GRCm39) V54A probably benign Het
Gli1 T C 10: 127,170,138 (GRCm39) E339G possibly damaging Het
Gm12185 A G 11: 48,798,594 (GRCm39) V633A probably damaging Het
Gpr83 T A 9: 14,779,493 (GRCm39) C182S probably null Het
Gspt1 A G 16: 11,038,719 (GRCm39) V627A probably damaging Het
Heatr1 T C 13: 12,427,040 (GRCm39) C722R probably benign Het
Jak1 C T 4: 101,020,119 (GRCm39) R680Q probably damaging Het
Kif2c A G 4: 117,027,137 (GRCm39) V287A probably damaging Het
Kmo C T 1: 175,479,184 (GRCm39) P240L possibly damaging Het
Kmo A G 1: 175,484,368 (GRCm39) E366G probably damaging Het
Lepr A T 4: 101,646,541 (GRCm39) N824I probably damaging Het
Lyrm7 T A 11: 54,739,425 (GRCm39) H75L possibly damaging Het
Map4k1 A T 7: 28,690,461 (GRCm39) Q351L probably benign Het
Matcap2 T G 9: 22,341,671 (GRCm39) L114R probably benign Het
Mgam T C 6: 40,638,617 (GRCm39) I450T probably benign Het
Nbeal2 A G 9: 110,465,373 (GRCm39) L955P probably damaging Het
Nlrp9c T C 7: 26,077,526 (GRCm39) K752R possibly damaging Het
Nsmaf A T 4: 6,438,062 (GRCm39) I70K probably benign Het
Or14a257 A G 7: 86,138,333 (GRCm39) M142T probably damaging Het
Or5ac19 C T 16: 59,089,307 (GRCm39) C241Y probably damaging Het
Otud7a A G 7: 63,408,391 (GRCm39) Y898C probably damaging Het
Pcdhb18 A C 18: 37,623,945 (GRCm39) D425A probably damaging Het
Prdm1 A T 10: 44,315,982 (GRCm39) L733* probably null Het
Prdm2 A T 4: 142,862,153 (GRCm39) I379N probably damaging Het
Ptprg A T 14: 12,220,596 (GRCm38) Y436F probably damaging Het
Riok3 A G 18: 12,270,363 (GRCm39) D167G probably damaging Het
Rnf215 G T 11: 4,085,451 (GRCm39) R60L probably damaging Het
Scart1 G A 7: 139,808,069 (GRCm39) V747I probably benign Het
Sdk1 A T 5: 141,985,705 (GRCm39) H779L probably benign Het
Serpine2 A G 1: 79,772,748 (GRCm39) F390L probably damaging Het
Sh3d21 T A 4: 126,045,519 (GRCm39) K387* probably null Het
Slc13a2 T C 11: 78,288,572 (GRCm39) Y568C possibly damaging Het
Slc27a5 T C 7: 12,722,386 (GRCm39) probably null Het
Slc32a1 T C 2: 158,456,497 (GRCm39) L384P probably damaging Het
Sorcs1 T C 19: 50,241,025 (GRCm39) N454D probably benign Het
Spag8 T C 4: 43,652,777 (GRCm39) Y228C possibly damaging Het
Spata31e4 G A 13: 50,854,443 (GRCm39) probably null Het
Spc25 T C 2: 69,030,431 (GRCm39) I71V probably damaging Het
Tcte1 T A 17: 45,846,178 (GRCm39) F261I probably damaging Het
Thsd7a T A 6: 12,471,174 (GRCm39) K481N probably benign Het
Tll2 G T 19: 41,074,839 (GRCm39) N908K probably benign Het
Tmem236 T C 2: 14,197,091 (GRCm39) V93A probably benign Het
Topaz1 G A 9: 122,596,076 (GRCm39) S949N probably benign Het
Triobp A G 15: 78,857,938 (GRCm39) T1180A probably benign Het
Trip11 A C 12: 101,852,419 (GRCm39) D548E probably benign Het
Trpv2 T A 11: 62,480,652 (GRCm39) probably null Het
Ulbp3 A G 10: 3,075,230 (GRCm39) noncoding transcript Het
Vmn1r12 T A 6: 57,136,540 (GRCm39) H212Q probably damaging Het
Vmn2r112 A G 17: 22,837,884 (GRCm39) T782A possibly damaging Het
Vmn2r7 A G 3: 64,623,876 (GRCm39) V239A possibly damaging Het
Vmn2r80 T A 10: 79,030,053 (GRCm39) N626K probably damaging Het
Vmn2r99 A G 17: 19,600,322 (GRCm39) S449G probably benign Het
Wfikkn2 T C 11: 94,128,933 (GRCm39) T403A probably benign Het
Xirp2 A G 2: 67,346,023 (GRCm39) I2755V probably benign Het
Yjefn3 A G 8: 70,341,729 (GRCm39) V153A probably benign Het
Zfp677 C A 17: 21,617,499 (GRCm39) H185Q possibly damaging Het
Zfp947 C T 17: 22,365,273 (GRCm39) V134I 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
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
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'- GATCAGAGAGTGTAGGTTGCATGGC -3'
(R):5'- TCCAAACTGACCAATGGGCTGAAG -3'

Sequencing Primer
(F):5'- AGGTTGCATGGCCTATCAGAG -3'
(R):5'- TTACTGCCCACAAAATTCTGAG -3'
Posted On 2014-04-13