Incidental Mutation 'R6155:Top3b'
ID 489544
Institutional Source Beutler Lab
Gene Symbol Top3b
Ensembl Gene ENSMUSG00000022779
Gene Name topoisomerase (DNA) III beta
Synonyms Topo III beta
MMRRC Submission 044302-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.248) question?
Stock # R6155 (G1)
Quality Score 225.009
Status Not validated
Chromosome 16
Chromosomal Location 16688600-16710854 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16709373 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Leucine to Proline at position 687 (L687P)
Ref Sequence ENSEMBL: ENSMUSP00000156132 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000027373] [ENSMUST00000119787] [ENSMUST00000232581]
AlphaFold Q9Z321
Predicted Effect probably damaging
Transcript: ENSMUST00000023465
AA Change: L687P

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: L687P

DomainStartEndE-ValueType
TOPRIM 3 138 2.64e-27 SMART
TOP1Bc 146 242 3.84e-38 SMART
TOP1Ac 289 545 2.28e-104 SMART
low complexity region 824 850 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000027373
SMART Domains Protein: ENSMUSP00000027373
Gene: ENSMUSG00000026181

DomainStartEndE-ValueType
Blast:PP2Cc 25 97 1e-16 BLAST
low complexity region 99 110 N/A INTRINSIC
PP2Cc 141 408 3.14e-79 SMART
PP2C_SIG 168 410 5.13e-5 SMART
Predicted Effect probably damaging
Transcript: ENSMUST00000119787
AA Change: L687P

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000112913
Gene: ENSMUSG00000022779
AA Change: L687P

DomainStartEndE-ValueType
TOPRIM 3 138 2.64e-27 SMART
TOP1Bc 146 242 3.84e-38 SMART
TOP1Ac 289 545 2.28e-104 SMART
low complexity region 824 850 N/A INTRINSIC
Predicted Effect possibly damaging
Transcript: ENSMUST00000124185
AA Change: L97P

PolyPhen 2 Score 0.667 (Sensitivity: 0.86; Specificity: 0.91)
SMART Domains Protein: ENSMUSP00000117491
Gene: ENSMUSG00000022779
AA Change: L97P

DomainStartEndE-ValueType
Blast:RING 99 152 1e-13 BLAST
Predicted Effect noncoding transcript
Transcript: ENSMUST00000128407
Predicted Effect noncoding transcript
Transcript: ENSMUST00000128497
Predicted Effect noncoding transcript
Transcript: ENSMUST00000129969
Predicted Effect possibly damaging
Transcript: ENSMUST00000156951
AA Change: L481P

PolyPhen 2 Score 0.632 (Sensitivity: 0.87; Specificity: 0.91)
SMART Domains Protein: ENSMUSP00000115214
Gene: ENSMUSG00000022779
AA Change: L481P

DomainStartEndE-ValueType
TOP1Ac 84 340 2.28e-104 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000135597
Predicted Effect noncoding transcript
Transcript: ENSMUST00000147531
Predicted Effect noncoding transcript
Transcript: ENSMUST00000150424
Predicted Effect noncoding transcript
Transcript: ENSMUST00000151271
Predicted Effect probably damaging
Transcript: ENSMUST00000232581
AA Change: L687P

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
Predicted Effect possibly damaging
Transcript: ENSMUST00000231966
AA Change: L97P

PolyPhen 2 Score 0.667 (Sensitivity: 0.86; Specificity: 0.91)
Predicted Effect possibly damaging
Transcript: ENSMUST00000232117
AA Change: L481P

PolyPhen 2 Score 0.747 (Sensitivity: 0.85; Specificity: 0.92)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231278
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232523
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231834
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231402
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232153
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231432
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232656
Meta Mutation Damage Score 0.8842 question?
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.6%
  • 10x: 97.9%
  • 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 enzyme catalyzes the transient breaking and rejoining of a single strand of DNA which allows the strands to pass through one another, thus relaxing the supercoils and altering the topology of DNA. The enzyme interacts with DNA helicase SGS1 and plays a role in DNA recombination, cellular aging and maintenance of genome stability. Low expression of this gene may be related to higher survival rates in breast cancer patients. This gene has a pseudogene on chromosome 22. Alternate splicing results in multiple transcript variants. Additional alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Aug 2013]
PHENOTYPE: Homozygous null mice develop to maturity but die prematurely showing enlargement of lymphatic organs and glomerulonephritis. Intercrossing of mutant mice progressively results in infertility that is correlated to increased aneuploidy in germ cells. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 68 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcg3 T C 5: 105,111,510 (GRCm39) Y319C probably benign Het
Actn4 A C 7: 28,595,566 (GRCm39) I763S probably damaging Het
Actr8 G A 14: 29,700,546 (GRCm39) probably null Het
Adrb1 T C 19: 56,711,336 (GRCm39) L178P probably damaging Het
Afap1 A G 5: 36,092,953 (GRCm39) Y19C unknown Het
Ankrd36 A G 11: 5,637,442 (GRCm39) E1337G probably benign Het
Arl4a A C 12: 40,086,519 (GRCm39) V76G probably damaging Het
Bmp1 A T 14: 70,745,447 (GRCm39) I246K probably damaging Het
Camk4 A T 18: 33,072,500 (GRCm39) T18S unknown Het
Cep152 T C 2: 125,423,620 (GRCm39) H927R probably benign Het
Clca3a2 A G 3: 144,525,118 (GRCm39) I38T probably damaging Het
Clec2g A C 6: 128,957,236 (GRCm39) T54P probably damaging Het
Cox20 A G 1: 178,149,362 (GRCm39) E31G possibly damaging Het
Crispld1 T A 1: 17,823,241 (GRCm39) H407Q probably benign Het
Csmd1 T C 8: 15,953,231 (GRCm39) I3417V probably benign Het
Dhtkd1 A C 2: 5,915,170 (GRCm39) H700Q probably null Het
Dnah10 G A 5: 124,847,663 (GRCm39) V1516M probably damaging Het
Dnah10 A G 5: 124,862,239 (GRCm39) T2165A probably damaging Het
Dock2 C G 11: 34,244,123 (GRCm39) M1072I probably benign Het
F11 T A 8: 45,705,119 (GRCm39) T141S probably damaging Het
Gabra6 T A 11: 42,207,350 (GRCm39) I245F probably damaging Het
H2-T5 G A 17: 36,478,399 (GRCm39) A211V possibly damaging Het
Herc1 T A 9: 66,340,705 (GRCm39) C1685S possibly damaging Het
Iftap A T 2: 101,406,355 (GRCm39) probably null Het
Il20 G T 1: 130,838,477 (GRCm39) D73E probably damaging Het
Ireb2 C A 9: 54,793,811 (GRCm39) P247Q probably damaging Het
Kcng3 T C 17: 83,895,807 (GRCm39) I220V probably benign Het
Lce1j T G 3: 92,696,379 (GRCm39) Q133P unknown Het
Lgals9 C T 11: 78,854,331 (GRCm39) A287T probably benign Het
Lrrc52 A G 1: 167,294,296 (GRCm39) probably benign Het
Map3k5 A T 10: 19,994,187 (GRCm39) H1027L probably benign Het
Morc3 A G 16: 93,659,313 (GRCm39) D407G possibly damaging Het
Myom1 T C 17: 71,415,690 (GRCm39) probably null Het
Ncapg2 T C 12: 116,401,631 (GRCm39) F673S possibly damaging Het
Ncoa6 T C 2: 155,249,368 (GRCm39) D1312G probably damaging Het
Nkx1-1 A T 5: 33,588,395 (GRCm39) F298I probably damaging Het
Npas2 G A 1: 39,326,557 (GRCm39) R14Q probably damaging Het
Npas4 C T 19: 5,036,898 (GRCm39) C422Y probably damaging Het
Or11h4 T C 14: 50,974,076 (GRCm39) D181G probably benign Het
Or2y11 T A 11: 49,443,411 (GRCm39) I279N possibly damaging Het
Or4c123 A G 2: 89,126,765 (GRCm39) L283S probably damaging Het
Or5p4 T C 7: 107,680,493 (GRCm39) V164A probably benign Het
Pcdhga4 T C 18: 37,819,546 (GRCm39) I365T probably damaging Het
Pear1 T A 3: 87,666,875 (GRCm39) T37S probably damaging Het
Pkn2 A T 3: 142,559,454 (GRCm39) F24I probably benign Het
Plcb3 G A 19: 6,943,533 (GRCm39) A122V probably damaging Het
Pnliprp1 T C 19: 58,718,565 (GRCm39) probably null Het
Pramel28 T A 4: 143,691,712 (GRCm39) H337L probably benign Het
Psmb3 T A 11: 97,603,278 (GRCm39) F164I probably damaging Het
Ptch2 T A 4: 116,954,105 (GRCm39) F45Y probably damaging Het
Ptpn23 C A 9: 110,216,849 (GRCm39) probably benign Het
Pusl1 A G 4: 155,975,005 (GRCm39) S199P probably damaging Het
Rasgrp2 C A 19: 6,452,531 (GRCm39) L35I probably damaging Het
Rictor T C 15: 6,823,458 (GRCm39) L1545P probably benign Het
Rtn4r A T 16: 17,969,258 (GRCm39) M229L probably benign Het
Ruvbl1 A T 6: 88,456,107 (GRCm39) probably null Het
Slc35b3 A T 13: 39,128,572 (GRCm39) S30T probably damaging Het
Sorcs3 T C 19: 48,387,136 (GRCm39) V207A possibly damaging Het
Sox13 A G 1: 133,321,005 (GRCm39) S2P probably damaging Het
Sptbn1 A C 11: 30,087,403 (GRCm39) L999R probably damaging Het
Taf4 A G 2: 179,555,317 (GRCm39) V1015A probably damaging Het
Tpp2 T A 1: 43,995,649 (GRCm39) V268E probably damaging Het
Ttc6 T C 12: 57,784,402 (GRCm39) Y1824H possibly damaging Het
Txk A G 5: 72,858,069 (GRCm39) Y360H probably damaging Het
Vmn2r57 T C 7: 41,078,114 (GRCm39) I115V probably benign Het
Vmn2r98 T C 17: 19,286,143 (GRCm39) S214P possibly damaging Het
Zbtb48 T C 4: 152,106,495 (GRCm39) probably null Het
Zzz3 A G 3: 152,133,319 (GRCm39) I126V possibly damaging Het
Other mutations in Top3b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00823:Top3b APN 16 16,705,486 (GRCm39) missense probably damaging 0.97
IGL01512:Top3b APN 16 16,709,286 (GRCm39) missense possibly damaging 0.74
IGL01552:Top3b APN 16 16,705,687 (GRCm39) splice site probably benign
IGL01738:Top3b APN 16 16,698,468 (GRCm39) missense probably benign 0.04
IGL02090:Top3b APN 16 16,709,334 (GRCm39) missense possibly damaging 0.81
R0143:Top3b UTSW 16 16,701,389 (GRCm39) missense probably damaging 0.97
R0883:Top3b UTSW 16 16,697,301 (GRCm39) splice site probably benign
R1386:Top3b UTSW 16 16,698,493 (GRCm39) missense probably benign 0.29
R1440:Top3b UTSW 16 16,710,641 (GRCm39) nonsense probably null
R1958:Top3b UTSW 16 16,702,166 (GRCm39) missense possibly damaging 0.52
R1970:Top3b UTSW 16 16,701,383 (GRCm39) missense probably damaging 1.00
R4211:Top3b UTSW 16 16,700,396 (GRCm39) splice site probably null
R4292:Top3b UTSW 16 16,701,383 (GRCm39) missense probably damaging 1.00
R4307:Top3b UTSW 16 16,707,481 (GRCm39) splice site probably benign
R4832:Top3b UTSW 16 16,708,526 (GRCm39) nonsense probably null
R5047:Top3b UTSW 16 16,709,282 (GRCm39) missense probably benign 0.00
R5364:Top3b UTSW 16 16,704,834 (GRCm39) missense probably benign 0.00
R5590:Top3b UTSW 16 16,709,441 (GRCm39) intron probably benign
R5604:Top3b UTSW 16 16,707,399 (GRCm39) nonsense probably null
R5719:Top3b UTSW 16 16,703,700 (GRCm39) missense probably damaging 1.00
R5969:Top3b UTSW 16 16,701,429 (GRCm39) critical splice donor site probably null
R6018:Top3b UTSW 16 16,710,756 (GRCm39) missense probably damaging 1.00
R6144:Top3b UTSW 16 16,697,005 (GRCm39) splice site probably null
R6341:Top3b UTSW 16 16,696,935 (GRCm39) missense probably damaging 0.98
R6700:Top3b UTSW 16 16,710,533 (GRCm39) missense possibly damaging 0.48
R7417:Top3b UTSW 16 16,695,714 (GRCm39) start gained probably benign
R7586:Top3b UTSW 16 16,709,232 (GRCm39) missense probably benign 0.44
R7747:Top3b UTSW 16 16,705,585 (GRCm39) missense probably benign 0.17
R8382:Top3b UTSW 16 16,705,867 (GRCm39) missense probably damaging 1.00
R8438:Top3b UTSW 16 16,709,364 (GRCm39) missense probably benign 0.04
R9142:Top3b UTSW 16 16,701,299 (GRCm39) missense probably damaging 1.00
R9311:Top3b UTSW 16 16,700,563 (GRCm39) critical splice donor site probably null
R9630:Top3b UTSW 16 16,710,354 (GRCm39) missense probably benign 0.03
X0011:Top3b UTSW 16 16,708,053 (GRCm39) missense probably benign 0.00
Predicted Primers PCR Primer
(F):5'- CAGCGGTTGAGGTATTTGCC -3'
(R):5'- TACAGCCTGAGCAATGGCAC -3'

Sequencing Primer
(F):5'- TGCCTGGCACTGAATTCTG -3'
(R):5'- GGCACAAGTATTTCTTAGGGTCCC -3'
Posted On 2017-10-10