Incidental Mutation 'R1987:Top2b'
ID222727
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Nametopoisomerase (DNA) II beta
SynonymsD230016L12Rik, Top-2
MMRRC Submission 039999-MU
Accession Numbers
Is this an essential gene? Probably essential (E-score: 0.928) question?
Stock #R1987 (G1)
Quality Score225
Status Not validated
Chromosome14
Chromosomal Location16365179-16435462 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 16398916 bp
ZygosityHeterozygous
Amino Acid Change Glutamic Acid to Glycine at position 512 (E512G)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629]
Predicted Effect probably damaging
Transcript: ENSMUST00000017629
AA Change: E512G

PolyPhen 2 Score 0.994 (Sensitivity: 0.69; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: E512G

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
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.4%
  • 10x: 96.4%
  • 20x: 92.6%
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: 79 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2610507B11Rik A T 11: 78,268,167 Q433L probably damaging Het
4932438A13Rik T A 3: 36,953,985 probably null Het
Ahnak A T 19: 9,015,251 D4633V probably damaging Het
Akap6 T C 12: 53,140,795 F1664S possibly damaging Het
Arhgef28 T C 13: 97,967,096 M803V probably benign Het
BC117090 C A 16: 36,321,832 G61C probably damaging Het
Ccdc73 T A 2: 104,931,045 L130* probably null Het
Ccdc73 A G 2: 104,999,159 E1059G probably damaging Het
Ccer2 A C 7: 28,757,283 S151R possibly damaging Het
Cep128 T A 12: 91,230,829 H406L probably benign Het
Cep135 A G 5: 76,597,428 D229G probably benign Het
Cpvl T A 6: 53,954,611 D103V probably benign Het
Disp3 G A 4: 148,258,753 A567V probably damaging Het
Dnah5 T C 15: 28,343,591 I2379T probably damaging Het
Dnah6 T C 6: 73,095,044 Y2433C probably damaging Het
Dock3 A G 9: 107,108,421 I85T probably benign Het
Dock9 A C 14: 121,591,830 S1380A probably benign Het
Erbin T C 13: 103,886,203 T43A probably benign Het
Fastkd3 T C 13: 68,585,241 V502A possibly damaging Het
Fn1 T C 1: 71,651,625 H59R probably damaging Het
Fsd2 A G 7: 81,559,659 V145A possibly damaging Het
Fzr1 A G 10: 81,370,319 V178A probably damaging Het
Gnpnat1 T C 14: 45,380,998 R116G probably damaging Het
Grm7 T A 6: 110,914,511 V235E probably damaging Het
Hdac4 A C 1: 91,934,645 N1002K probably damaging Het
Hey1 C T 3: 8,664,897 A167T probably benign Het
Hrnr A G 3: 93,332,604 N3383S unknown Het
Ints2 A T 11: 86,217,800 V907D probably benign Het
Ispd T A 12: 36,521,996 L301Q probably damaging Het
Jchain T A 5: 88,521,467 Q109L probably damaging Het
Klhdc7a A T 4: 139,966,024 Y537* probably null Het
Klra1 C T 6: 130,377,779 S92N probably benign Het
Krt31 C T 11: 100,049,580 G150S probably benign Het
Lrrc71 G A 3: 87,742,643 T326M probably benign Het
Lrrn4 T C 2: 132,870,443 T487A probably benign Het
Map4k5 T G 12: 69,842,912 R198S probably damaging Het
Men1 G A 19: 6,338,837 C354Y probably damaging Het
Ms4a18 A T 19: 11,013,655 V25E probably damaging Het
Mutyh T A 4: 116,819,368 S512R possibly damaging Het
Myh10 G T 11: 68,814,496 A1947S possibly damaging Het
Nfasc T C 1: 132,610,886 D427G probably damaging Het
Nlrp9c A G 7: 26,378,056 M767T probably benign Het
Nrbp1 T C 5: 31,245,391 L185P probably damaging Het
Pcdh9 G A 14: 93,888,305 P143L probably damaging Het
Pcsk6 A T 7: 65,927,287 M158L possibly damaging Het
Pkd1 G T 17: 24,576,592 probably null Het
Plk4 A T 3: 40,805,817 S383C possibly damaging Het
Plxna2 T C 1: 194,643,989 L77P probably damaging Het
Pnpla6 A T 8: 3,542,370 T1209S probably benign Het
Prdm2 A G 4: 143,132,509 S1404P possibly damaging Het
Preb T C 5: 30,958,813 D150G probably damaging Het
Prrt2 A G 7: 127,018,730 V59A probably benign Het
Prss40 T C 1: 34,558,014 N151S possibly damaging Het
Ptprt G T 2: 161,558,898 A1053D probably damaging Het
Ptprt A G 2: 161,766,321 V685A possibly damaging Het
Rfx4 C T 10: 84,896,088 S549F possibly damaging Het
Rnaset2b T A 17: 6,996,477 V87E probably benign Het
Rnf213 G A 11: 119,441,107 E2381K probably damaging Het
Sectm1a A T 11: 121,069,680 I103N probably damaging Het
Selp T A 1: 164,142,758 L597Q probably damaging Het
Sema6a T C 18: 47,300,142 D74G probably damaging Het
Serpinb9b T C 13: 33,029,559 V33A probably benign Het
Setd1b A T 5: 123,147,706 T272S unknown Het
Sgf29 G C 7: 126,649,477 probably null Het
Slc4a10 C A 2: 62,268,204 Q561K probably damaging Het
Slc4a5 T C 6: 83,273,232 I649T possibly damaging Het
Slc5a7 A G 17: 54,293,835 Y91H probably damaging Het
Styxl1 T C 5: 135,757,122 Y23C probably damaging Het
Tbc1d24 A G 17: 24,206,872 V490A possibly damaging Het
Tbpl2 A T 2: 24,094,732 F133L probably benign Het
Tcrg-C3 C A 13: 19,260,994 F37L probably damaging Het
Tnfrsf22 T C 7: 143,638,389 probably benign Het
Ttc17 T A 2: 94,364,345 H561L probably benign Het
Ttll4 G T 1: 74,685,368 V566L possibly damaging Het
Ubqlnl A G 7: 104,148,485 Y602H probably benign Het
Vmn1r231 T A 17: 20,889,950 E234D probably damaging Het
Wbp11 A G 6: 136,820,585 S279P probably damaging Het
Wdr6 A G 9: 108,576,534 L50P probably damaging Het
Zfp715 A C 7: 43,298,649 I629S possibly damaging 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
PIT4434001:Top2b UTSW 14 16423780 critical splice donor site probably null
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
R1159:Top2b UTSW 14 16430329 missense possibly damaging 0.81
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
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
R7162:Top2b UTSW 14 16416653 missense probably benign 0.00
R7247:Top2b UTSW 14 16416962 missense probably benign 0.08
R7250:Top2b UTSW 14 16420411 missense probably benign
R7359:Top2b UTSW 14 16407376 missense probably null 1.00
R7365:Top2b UTSW 14 16416649 missense probably benign 0.04
R7493:Top2b UTSW 14 16416605 missense probably benign 0.00
R7528:Top2b UTSW 14 16395427 nonsense probably null
R7562:Top2b UTSW 14 16412946 missense probably benign 0.04
R7594:Top2b UTSW 14 16428587 missense probably benign
R7670:Top2b UTSW 14 16416620 missense possibly damaging 0.61
R7894:Top2b UTSW 14 16413081 missense possibly damaging 0.68
R8031:Top2b UTSW 14 16412986 missense probably damaging 0.98
R8150:Top2b UTSW 14 16393291 missense probably damaging 0.99
R8214:Top2b UTSW 14 16383177 missense probably damaging 1.00
R8299:Top2b UTSW 14 16386123 missense possibly damaging 0.68
X0028:Top2b UTSW 14 16384499 nonsense probably null
Z1176:Top2b UTSW 14 16395434 missense probably damaging 1.00
Z1177:Top2b UTSW 14 16416953 missense probably benign
Predicted Primers PCR Primer
(F):5'- TTCTCAATGTACGAGAAGCCTC -3'
(R):5'- ACATCTGTCCTGCATCCAGC -3'

Sequencing Primer
(F):5'- GAGAAGCCTCTCATAAACAGGTTTG -3'
(R):5'- ATCCAGCATGCATTCATACATAC -3'
Posted On2014-08-25