Incidental Mutation 'R1159:Top2b'
ID101993
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Nametopoisomerase (DNA) II beta
SynonymsD230016L12Rik, Top-2
MMRRC Submission 039232-MU
Accession Numbers
Is this an essential gene? Probably essential (E-score: 0.919) question?
Stock #R1159 (G1)
Quality Score225
Status Validated
Chromosome14
Chromosomal Location16365179-16435462 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 16430329 bp
ZygosityHeterozygous
Amino Acid Change Serine to Proline at position 1568 (S1568P)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000063750] [ENSMUST00000161693] [ENSMUST00000223576] [ENSMUST00000225921]
Predicted Effect possibly damaging
Transcript: ENSMUST00000017629
AA Change: S1568P

PolyPhen 2 Score 0.808 (Sensitivity: 0.84; Specificity: 0.93)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: S1568P

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: ENSMUST00000063750
SMART Domains Protein: ENSMUSP00000067694
Gene: ENSMUSG00000017491

DomainStartEndE-ValueType
low complexity region 52 75 N/A INTRINSIC
ZnF_C4 78 149 3.77e-40 SMART
HOLI 223 381 1.72e-34 SMART
low complexity region 428 445 N/A INTRINSIC
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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000163032
Predicted Effect probably benign
Transcript: ENSMUST00000223576
Predicted Effect noncoding transcript
Transcript: ENSMUST00000224460
Predicted Effect probably benign
Transcript: ENSMUST00000225921
Meta Mutation Damage Score 0.24 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.2%
  • 10x: 96.1%
  • 20x: 91.8%
Validation Efficiency 100% (42/42)
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: 39 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aass G A 6: 23,115,138 H164Y probably damaging Het
Acss2 T C 2: 155,551,218 I288T probably benign Het
Akap9 C T 5: 3,960,865 R541C probably damaging Het
Ano5 T C 7: 51,579,474 probably benign Het
Anp32b T C 4: 46,471,478 probably benign Het
Avil T C 10: 127,011,790 V528A possibly damaging Het
B020004J07Rik T C 4: 101,838,027 E29G possibly damaging Het
Cacna1c C T 6: 118,612,625 R1446H probably damaging Het
Cdk10 T C 8: 123,228,323 probably benign Het
Cfap65 A T 1: 74,929,340 F111Y probably damaging Het
Cryge A G 1: 65,050,808 F72L probably benign Het
Ercc3 C T 18: 32,264,558 T614I possibly damaging Het
Fgd5 T C 6: 91,988,502 I572T probably benign Het
Fubp1 A G 3: 152,215,592 D88G possibly damaging Het
Gcnt1 C A 19: 17,329,804 V186F possibly damaging Het
Gldc A T 19: 30,160,762 probably benign Het
Gxylt2 A G 6: 100,804,641 M426V possibly damaging Het
Hps5 A T 7: 46,772,554 probably null Het
Igf2bp2 G A 16: 22,061,853 probably benign Het
Lamb2 T C 9: 108,481,408 S215P probably damaging Het
Mfsd13b T C 7: 121,014,543 M421T probably damaging Het
Mtif2 C A 11: 29,540,729 R478S possibly damaging Het
Nadk2 G A 15: 9,106,837 R351H possibly damaging Het
Nt5dc1 T C 10: 34,398,173 D167G possibly damaging Het
Nup98 T A 7: 102,160,716 T536S probably damaging Het
Parp14 G A 16: 35,856,760 A946V probably benign Het
Ppig T A 2: 69,750,224 S701T unknown Het
Ptprc A G 1: 138,072,319 S830P probably damaging Het
Rev3l T A 10: 39,851,925 L2690* probably null Het
Rgs22 A T 15: 36,040,693 S883T probably damaging Het
Rxfp4 A G 3: 88,652,587 W186R probably damaging Het
Sacm1l T C 9: 123,566,411 S200P probably benign Het
Serpinb6d T A 13: 33,671,229 D295E probably damaging Het
Slc38a10 A G 11: 120,105,475 V932A probably benign Het
Tox T G 4: 6,697,600 N401T probably benign Het
Trim24 T C 6: 37,956,477 probably null Het
Unc79 T G 12: 103,047,052 probably benign Het
Vmn2r66 A T 7: 84,995,405 I599N probably benign Het
Zfa-ps T A 10: 52,543,558 noncoding transcript Het
Other mutations in Top2b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00430:Top2b APN 14 16422692 missense probably benign 0.00
IGL00730:Top2b APN 14 16389831 missense probably damaging 1.00
IGL00917:Top2b APN 14 16407354 missense probably benign 0.05
IGL01959:Top2b APN 14 16422695 missense probably benign 0.19
IGL02019:Top2b APN 14 16409965 missense probably benign 0.44
IGL02119:Top2b APN 14 16406733 missense probably damaging 1.00
IGL02136:Top2b APN 14 16407103 unclassified probably benign
IGL02148:Top2b APN 14 16400488 missense probably damaging 1.00
IGL02496:Top2b APN 14 16387335 missense probably benign
IGL02503:Top2b APN 14 16407163 missense possibly damaging 0.92
IGL02672:Top2b APN 14 16409166 unclassified probably benign
IGL02721:Top2b APN 14 16409236 missense probably damaging 1.00
IGL02886:Top2b APN 14 16365688 missense possibly damaging 0.73
IGL03252:Top2b APN 14 16393163 missense possibly damaging 0.60
R0092:Top2b UTSW 14 16409263 missense probably damaging 1.00
R0201:Top2b UTSW 14 16383174 missense probably damaging 1.00
R0390:Top2b UTSW 14 16418442 missense probably benign 0.00
R0394:Top2b UTSW 14 16413556 splice site probably null
R1424:Top2b UTSW 14 16383177 missense probably damaging 1.00
R1519:Top2b UTSW 14 16408953 splice site probably null
R1561:Top2b UTSW 14 16398993 missense possibly damaging 0.80
R1713:Top2b UTSW 14 16409823 missense probably benign 0.05
R1987:Top2b UTSW 14 16398916 missense probably damaging 0.99
R2219:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2287:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2422:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2679:Top2b UTSW 14 16413947 missense probably damaging 1.00
R3687:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3707:Top2b UTSW 14 16388447 missense probably damaging 1.00
R3810:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3812:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3815:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3816:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3818:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4023:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4025:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4026:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4133:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4157:Top2b UTSW 14 16384491 missense probably benign 0.42
R4179:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4180:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4300:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4376:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4377:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4492:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4549:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4550:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4581:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4582:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4628:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4630:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4667:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4668:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4669:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4698:Top2b UTSW 14 16387331 nonsense probably null
R4769:Top2b UTSW 14 16398991 missense probably damaging 1.00
R4809:Top2b UTSW 14 16383125 missense probably benign 0.06
R4899:Top2b UTSW 14 16387313 missense probably damaging 1.00
R5035:Top2b UTSW 14 16409966 missense probably benign 0.01
R5621:Top2b UTSW 14 16387280 missense probably damaging 1.00
R5631:Top2b UTSW 14 16409882 missense probably damaging 1.00
R5685:Top2b UTSW 14 16413666 missense probably damaging 1.00
R5732:Top2b UTSW 14 16400106 missense possibly damaging 0.92
R5939:Top2b UTSW 14 16422786 missense probably damaging 0.96
R6007:Top2b UTSW 14 16423779 critical splice donor site probably null
R6087:Top2b UTSW 14 16409864 missense probably benign 0.14
R6144:Top2b UTSW 14 16423740 missense possibly damaging 0.48
R6196:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6218:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6229:Top2b UTSW 14 16409838 missense probably damaging 1.00
R6249:Top2b UTSW 14 16399006 missense probably damaging 1.00
R6337:Top2b UTSW 14 16399026 missense possibly damaging 0.77
R6353:Top2b UTSW 14 16416671 missense probably damaging 1.00
R6512:Top2b UTSW 14 16409854 missense possibly damaging 0.94
R6573:Top2b UTSW 14 16398991 missense probably damaging 1.00
R6614:Top2b UTSW 14 16407142 nonsense probably null
R6844:Top2b UTSW 14 16429383 missense possibly damaging 0.94
R6848:Top2b UTSW 14 16409958 missense possibly damaging 0.89
R6871:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6895:Top2b UTSW 14 16413604 missense probably benign 0.06
X0028:Top2b UTSW 14 16384499 nonsense probably null
Predicted Primers
Posted On2014-01-15