Incidental Mutation 'R5719:Top3b'
ID 451380
Institutional Source Beutler Lab
Gene Symbol Top3b
Ensembl Gene ENSMUSG00000022779
Gene Name topoisomerase (DNA) III beta
Synonyms Topo III beta
MMRRC Submission 043339-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.248) question?
Stock # R5719 (G1)
Quality Score 225
Status Validated
Chromosome 16
Chromosomal Location 16688600-16710854 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16703700 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 285 (V285A)
Ref Sequence ENSEMBL: ENSMUSP00000118398 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000119787] [ENSMUST00000139740] [ENSMUST00000156502] [ENSMUST00000232080] [ENSMUST00000232017] [ENSMUST00000232581]
AlphaFold Q9Z321
Predicted Effect probably damaging
Transcript: ENSMUST00000023465
AA Change: V285A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: V285A

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 noncoding transcript
Transcript: ENSMUST00000118424
Predicted Effect probably damaging
Transcript: ENSMUST00000119787
AA Change: V285A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000112913
Gene: ENSMUSG00000022779
AA Change: V285A

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: ENSMUST00000124185
SMART Domains Protein: ENSMUSP00000117491
Gene: ENSMUSG00000022779

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 noncoding transcript
Transcript: ENSMUST00000147531
Predicted Effect noncoding transcript
Transcript: ENSMUST00000135597
Predicted Effect probably damaging
Transcript: ENSMUST00000139740
AA Change: V285A

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000118398
Gene: ENSMUSG00000022779
AA Change: V285A

DomainStartEndE-ValueType
TOPRIM 3 138 2.64e-27 SMART
TOP1Bc 146 242 3.84e-38 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000150424
Predicted Effect
SMART Domains Protein: ENSMUSP00000115214
Gene: ENSMUSG00000022779
AA Change: V79A

DomainStartEndE-ValueType
TOP1Ac 84 340 2.28e-104 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000156502
SMART Domains Protein: ENSMUSP00000115491
Gene: ENSMUSG00000022779

DomainStartEndE-ValueType
TOPRIM 3 138 2.64e-27 SMART
TOP1Bc 146 234 4.29e-27 SMART
Predicted Effect unknown
Transcript: ENSMUST00000232117
AA Change: V79A
Predicted Effect probably damaging
Transcript: ENSMUST00000232080
AA Change: V285A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232153
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231432
Predicted Effect probably benign
Transcript: ENSMUST00000231966
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231278
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231834
Predicted Effect probably benign
Transcript: ENSMUST00000232017
Predicted Effect probably damaging
Transcript: ENSMUST00000232581
AA Change: V285A

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232656
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232531
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232523
Meta Mutation Damage Score 0.7390 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.3%
Validation Efficiency 98% (79/81)
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: 69 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
A130051J06Rik C T 15: 95,688,641 (GRCm39) probably benign Het
A630001G21Rik T A 1: 85,651,106 (GRCm39) R110W probably benign Het
Abca4 T C 3: 121,928,915 (GRCm39) probably null Het
Abcc3 T C 11: 94,241,894 (GRCm39) N1379S probably damaging Het
Actrt3 A C 3: 30,652,276 (GRCm39) F273V probably benign Het
Adam22 T C 5: 8,417,217 (GRCm39) D75G probably benign Het
Ash1l C A 3: 88,961,805 (GRCm39) D2392E possibly damaging Het
Ash1l T C 3: 88,965,933 (GRCm39) I2445T probably damaging Het
Bltp2 T A 11: 78,164,071 (GRCm39) H1137Q probably damaging Het
Cacna2d2 A G 9: 107,401,851 (GRCm39) I762V probably benign Het
Ccdc127 T A 13: 74,505,187 (GRCm39) probably benign Het
Ccdc91 C G 6: 147,477,001 (GRCm39) L230V unknown Het
Cdk13 A G 13: 17,894,240 (GRCm39) I1129T probably damaging Het
Cnot1 C T 8: 96,470,924 (GRCm39) R1308H possibly damaging Het
Crhr2 T C 6: 55,080,207 (GRCm39) H144R probably damaging Het
Dnmt1 T C 9: 20,823,891 (GRCm39) N993S possibly damaging Het
Eif4g1 T A 16: 20,507,761 (GRCm39) V1182D probably damaging Het
Eml2 G A 7: 18,935,088 (GRCm39) V432I probably damaging Het
Fam234a T A 17: 26,433,627 (GRCm39) Q399L possibly damaging Het
Fyb1 A T 15: 6,610,350 (GRCm39) K308* probably null Het
Gfral C T 9: 76,104,328 (GRCm39) R228Q probably benign Het
Gm10309 A T 17: 86,806,421 (GRCm39) probably benign Het
Gm11595 G A 11: 99,663,381 (GRCm39) R100C unknown Het
Gm5501 G A 18: 9,917,417 (GRCm39) noncoding transcript Het
Gm6309 A T 5: 146,104,992 (GRCm39) V307D probably benign Het
Gm9871 T A 6: 101,773,148 (GRCm39) noncoding transcript Het
Greb1l G A 18: 10,542,427 (GRCm39) E1341K probably damaging Het
Herc3 T A 6: 58,871,528 (GRCm39) V70E possibly damaging Het
Hes7 A G 11: 69,012,415 (GRCm39) E41G probably damaging Het
Ifi27l2b T C 12: 103,422,046 (GRCm39) D106G unknown Het
Igfbp6 A T 15: 102,056,616 (GRCm39) Y184F probably damaging Het
Isyna1 A G 8: 71,047,352 (GRCm39) Y25C probably damaging Het
Kcng3 G T 17: 83,938,563 (GRCm39) T162K possibly damaging Het
Krt36 T C 11: 99,994,987 (GRCm39) D195G possibly damaging Het
Lrwd1 A T 5: 136,161,093 (GRCm39) probably null Het
Lsg1 C T 16: 30,380,593 (GRCm39) A615T probably benign Het
Myo5a A T 9: 75,059,213 (GRCm39) E480D probably damaging Het
Myrf T A 19: 10,194,087 (GRCm39) D690V probably damaging Het
N4bp1 T C 8: 87,578,312 (GRCm39) I684M probably damaging Het
Nlrc3 C T 16: 3,781,589 (GRCm39) A607T probably damaging Het
Nuak1 A T 10: 84,245,584 (GRCm39) I87N probably damaging Het
Odad2 G T 18: 7,211,496 (GRCm39) Q793K probably benign Het
Or5p66 T G 7: 107,885,599 (GRCm39) T245P probably damaging Het
Or5w11 T C 2: 87,459,475 (GRCm39) probably null Het
Or8b4 A T 9: 37,830,647 (GRCm39) E236D probably damaging Het
Osbpl9 T A 4: 108,919,763 (GRCm39) R689* probably null Het
Ppargc1b T A 18: 61,440,639 (GRCm39) M744L probably benign Het
Prss40 A T 1: 34,591,598 (GRCm39) probably benign Het
Ptprd T A 4: 75,972,839 (GRCm39) probably null Het
Rft1 T C 14: 30,385,183 (GRCm39) probably benign Het
Rftn2 C T 1: 55,253,445 (GRCm39) V53I probably damaging Het
Rnaset2a T C 17: 8,350,879 (GRCm39) Y167C probably damaging Het
Schip1 T C 3: 68,315,560 (GRCm39) probably benign Het
Scn5a A C 9: 119,359,118 (GRCm39) L643R possibly damaging Het
Shroom3 T A 5: 93,090,877 (GRCm39) M1128K probably benign Het
Skint8 C A 4: 111,807,390 (GRCm39) L359M probably damaging Het
Slc14a2 A G 18: 78,252,257 (GRCm39) L18P probably benign Het
Slc22a3 C T 17: 12,642,691 (GRCm39) V509M probably damaging Het
Slc7a5 A C 8: 122,610,381 (GRCm39) F478V probably benign Het
Smc1b T A 15: 84,980,859 (GRCm39) N803I probably benign Het
Snf8 T A 11: 95,932,551 (GRCm39) N115K probably damaging Het
Stox2 T A 8: 47,866,172 (GRCm39) K57* probably null Het
Tmem248 T A 5: 130,258,429 (GRCm39) F41I probably damaging Het
Tmprss7 T C 16: 45,506,793 (GRCm39) S90G probably damaging Het
Tsen15 T C 1: 152,247,534 (GRCm39) T153A probably damaging Het
Usp34 T G 11: 23,304,846 (GRCm39) S360A probably benign Het
Wdr24 T C 17: 26,047,314 (GRCm39) probably null Het
Zbtb2 G A 10: 4,319,456 (GRCm39) T190I probably benign Het
Zranb3 T C 1: 127,891,613 (GRCm39) S788G probably benign 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
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
R6155:Top3b UTSW 16 16,709,373 (GRCm39) missense probably damaging 1.00
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'- ACGTGGCCTCTGTTGACTTC -3'
(R):5'- GGGTTACAGTATTGGCCCTG -3'

Sequencing Primer
(F):5'- AACAGAGGATGCGTGTGCTCTC -3'
(R):5'- GCCCTGTACCAGTCTCAAGATG -3'
Posted On 2017-01-03