Incidental Mutation 'R5604:Top3b'
ID 439212
Institutional Source Beutler Lab
Gene Symbol Top3b
Ensembl Gene ENSMUSG00000022779
Gene Name topoisomerase (DNA) III beta
Synonyms Topo III beta
MMRRC Submission 043156-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.248) question?
Stock # R5604 (G1)
Quality Score 225
Status Not validated
Chromosome 16
Chromosomal Location 16688600-16710854 bp(+) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) T to G at 16707399 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Stop codon at position 526 (Y526*)
Ref Sequence ENSEMBL: ENSMUSP00000156132 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000119787] [ENSMUST00000232080] [ENSMUST00000232581]
AlphaFold Q9Z321
Predicted Effect probably null
Transcript: ENSMUST00000023465
AA Change: Y526*
SMART Domains Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: Y526*

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 null
Transcript: ENSMUST00000119787
AA Change: Y526*
SMART Domains Protein: ENSMUSP00000112913
Gene: ENSMUSG00000022779
AA Change: Y526*

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: ENSMUST00000128407
Predicted Effect noncoding transcript
Transcript: ENSMUST00000128497
Predicted Effect noncoding transcript
Transcript: ENSMUST00000129969
Predicted Effect noncoding transcript
Transcript: ENSMUST00000135597
Predicted Effect noncoding transcript
Transcript: ENSMUST00000150424
Predicted Effect probably null
Transcript: ENSMUST00000156951
AA Change: Y320*
SMART Domains Protein: ENSMUSP00000115214
Gene: ENSMUSG00000022779
AA Change: Y320*

DomainStartEndE-ValueType
TOP1Ac 84 340 2.28e-104 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000147531
Predicted Effect noncoding transcript
Transcript: ENSMUST00000151271
Predicted Effect probably benign
Transcript: ENSMUST00000231966
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231278
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232531
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232153
Predicted Effect probably null
Transcript: ENSMUST00000232117
AA Change: Y320*
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231402
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232523
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231834
Predicted Effect probably benign
Transcript: ENSMUST00000232080
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231432
Predicted Effect probably null
Transcript: ENSMUST00000232581
AA Change: Y526*
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232656
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.7%
  • 10x: 98.6%
  • 20x: 96.3%
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: 60 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2310034C09Rik A T 16: 88,556,278 (GRCm39) N164I possibly damaging Het
4933402J07Rik C A 8: 88,295,125 (GRCm39) R88S possibly damaging Het
Abca1 A T 4: 53,067,168 (GRCm39) probably null Het
Abca13 T A 11: 9,516,279 (GRCm39) I4406K probably damaging Het
Adam6b T A 12: 113,454,420 (GRCm39) Y412* probably null Het
Ahcyl2 C T 6: 29,908,366 (GRCm39) H370Y probably damaging Het
Ahi1 A G 10: 20,862,904 (GRCm39) Y693C probably damaging Het
Anapc4 T A 5: 52,999,076 (GRCm39) Y129* probably null Het
Ankrd35 A G 3: 96,592,215 (GRCm39) T834A probably benign Het
Antxr2 T C 5: 98,096,169 (GRCm39) K372E probably damaging Het
Arhgef1 C T 7: 24,612,210 (GRCm39) H198Y probably benign Het
Barhl2 T C 5: 106,603,412 (GRCm39) E249G probably benign Het
C2cd5 T C 6: 142,957,747 (GRCm39) E987G probably benign Het
C87436 T C 6: 86,424,337 (GRCm39) S290P probably benign Het
Ccser1 C T 6: 61,290,788 (GRCm39) T490M probably damaging Het
Cd8b1 T C 6: 71,303,159 (GRCm39) V78A probably benign Het
Cdc25c A G 18: 34,866,701 (GRCm39) Y374H probably damaging Het
Cmya5 C T 13: 93,229,271 (GRCm39) R1939H probably benign Het
Cyp2d40 A G 15: 82,648,256 (GRCm39) F19S probably damaging Het
Dll3 A G 7: 27,994,057 (GRCm39) V460A probably benign Het
Dnajb12 GC G 10: 59,728,574 (GRCm39) probably null Het
E4f1 A G 17: 24,663,118 (GRCm39) I729T probably damaging Het
Endou A C 15: 97,618,800 (GRCm39) S75A probably benign Het
Epas1 C T 17: 87,113,200 (GRCm39) H129Y probably damaging Het
Grm1 T A 10: 10,622,479 (GRCm39) N415Y probably damaging Het
Hdc A T 2: 126,436,583 (GRCm39) S429R probably benign Het
Hnf4g C T 3: 3,722,186 (GRCm39) Q447* probably null Het
Htr6 C T 4: 138,788,814 (GRCm39) A414T probably benign Het
Insig1 T C 5: 28,280,080 (GRCm39) L224P probably damaging Het
Ipo9 G A 1: 135,329,983 (GRCm39) L486F probably damaging Het
Irak2 T A 6: 113,667,792 (GRCm39) S458T possibly damaging Het
Irs2 A G 8: 11,055,007 (GRCm39) S1142P possibly damaging Het
Kirrel1 T A 3: 86,996,462 (GRCm39) N379I possibly damaging Het
L3mbtl4 T A 17: 69,084,917 (GRCm39) D609E probably benign Het
Lama3 A G 18: 12,572,405 (GRCm39) T537A probably benign Het
Lce1i A T 3: 92,685,056 (GRCm39) V40E unknown Het
Mprip T A 11: 59,649,293 (GRCm39) V999D probably benign Het
Myd88 G T 9: 119,168,829 (GRCm39) T85K possibly damaging Het
Or1e35 T A 11: 73,797,853 (GRCm39) H155L probably benign Het
Padi6 A T 4: 140,458,473 (GRCm39) M473K probably damaging Het
Pcdh12 T A 18: 38,401,935 (GRCm39) S97C probably damaging Het
Pkd1l1 T A 11: 8,783,877 (GRCm39) D2026V probably damaging Het
Plcxd1 T C 5: 110,250,451 (GRCm39) V264A probably benign Het
Plekha4 T C 7: 45,198,580 (GRCm39) S558P probably damaging Het
Ppm1a T A 12: 72,837,455 (GRCm39) M334K probably benign Het
Ppp1r13l T C 7: 19,109,524 (GRCm39) S684P possibly damaging Het
Prdm4 TCTCCTCCT TCTCCT 10: 85,728,987 (GRCm39) probably null Het
Prl2a1 T C 13: 27,990,369 (GRCm39) probably benign Het
Ptch1 T C 13: 63,672,936 (GRCm39) K753E probably benign Het
Qrich1 A G 9: 108,436,502 (GRCm39) probably benign Het
Ror2 G A 13: 53,271,201 (GRCm39) R373C probably benign Het
Rtn4 C A 11: 29,658,140 (GRCm39) L765I probably damaging Het
Sema3a T C 5: 13,523,487 (GRCm39) probably null Het
Setd2 T A 9: 110,433,284 (GRCm39) D62E probably damaging Het
Ss18 A T 18: 14,769,577 (GRCm39) Y327N unknown Het
Ticam1 G A 17: 56,578,756 (GRCm39) T113I probably benign Het
Tnrc6a A G 7: 122,773,459 (GRCm39) I1134V probably damaging Het
Tph2 T C 10: 114,926,614 (GRCm39) E384G probably damaging Het
Ttll11 A T 2: 35,707,798 (GRCm39) I503N probably benign Het
Zfp87 T G 13: 67,665,945 (GRCm39) K172N probably 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
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
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'- AGCAGTCTGGACCTAATGAGC -3'
(R):5'- CATCTCTGCAGTGGGGATTG -3'

Sequencing Primer
(F):5'- CAAAATAAGCTTCAGGTTGTGGCAC -3'
(R):5'- TGGGGATTGGGGAAATGCATG -3'
Posted On 2016-10-26