Incidental Mutation 'R1440:Top3b'
Institutional Source Beutler Lab
Gene Symbol Top3b
Ensembl Gene ENSMUSG00000022779
Gene Nametopoisomerase (DNA) III beta
SynonymsTopo III beta
MMRRC Submission 039495-MU
Accession Numbers
Is this an essential gene? Possibly non essential (E-score: 0.288) question?
Stock #R1440 (G1)
Quality Score173
Status Validated
Chromosomal Location16870736-16892990 bp(+) (GRCm38)
Type of Mutationnonsense
DNA Base Change (assembly) C to T at 16892777 bp
Amino Acid Change Arginine to Stop codon at position 824 (R824*)
Ref Sequence ENSEMBL: ENSMUSP00000156132 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000027373] [ENSMUST00000119787] [ENSMUST00000232247] [ENSMUST00000232581]
Predicted Effect probably null
Transcript: ENSMUST00000023465
AA Change: R824*
SMART Domains Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: R824*

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

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 null
Transcript: ENSMUST00000119787
AA Change: R824*
SMART Domains Protein: ENSMUSP00000112913
Gene: ENSMUSG00000022779
AA Change: R824*

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: ENSMUST00000129969
Predicted Effect noncoding transcript
Transcript: ENSMUST00000135597
Predicted Effect noncoding transcript
Transcript: ENSMUST00000145978
Predicted Effect noncoding transcript
Transcript: ENSMUST00000150424
Predicted Effect noncoding transcript
Transcript: ENSMUST00000151271
Predicted Effect probably benign
Transcript: ENSMUST00000156951
SMART Domains Protein: ENSMUSP00000115214
Gene: ENSMUSG00000022779

TOP1Ac 84 340 2.28e-104 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231278
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231402
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231432
Predicted Effect probably benign
Transcript: ENSMUST00000232117
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232153
Predicted Effect probably benign
Transcript: ENSMUST00000232247
Predicted Effect probably null
Transcript: ENSMUST00000232581
AA Change: R824*
Predicted Effect probably benign
Transcript: ENSMUST00000231966
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232523
Meta Mutation Damage Score 0.9755 question?
Coding Region Coverage
  • 1x: 98.8%
  • 3x: 97.7%
  • 10x: 94.0%
  • 20x: 84.7%
Validation Efficiency 95% (94/99)
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: 91 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930447C04Rik T G 12: 72,881,421 N512T possibly damaging Het
Aadacl2 A T 3: 60,024,892 H276L probably damaging Het
Adam12 G A 7: 133,931,814 T445M probably benign Het
Ash2l A T 8: 25,827,378 F290L probably benign Het
Asxl3 C T 18: 22,525,224 P2097L probably benign Het
Atmin A G 8: 116,957,376 I592V probably damaging Het
Atxn2 T C 5: 121,803,082 probably null Het
BC004004 T C 17: 29,296,691 probably null Het
Cacna1e T C 1: 154,561,806 N328S possibly damaging Het
Cacna2d1 A T 5: 16,355,495 K765I probably damaging Het
Cc2d1a A G 8: 84,133,975 probably null Het
Ccdc28b A G 4: 129,620,615 V198A probably benign Het
Ces1b G T 8: 93,068,108 R288S probably damaging Het
Cfap100 T G 6: 90,412,184 T198P probably benign Het
Clint1 T C 11: 45,890,783 S227P probably damaging Het
Cntn5 C A 9: 10,145,339 C122F probably damaging Het
Col3a1 A G 1: 45,343,312 probably null Het
Cyp4a10 A C 4: 115,529,449 D431A probably damaging Het
Cyp4f16 CTATG CTATGTATG 17: 32,550,734 probably null Het
Dlc1 A T 8: 36,593,463 probably benign Het
Dlgap2 T C 8: 14,727,060 S102P probably benign Het
Dnah7b G A 1: 46,078,593 probably benign Het
Dock10 A C 1: 80,549,136 S1124A probably benign Het
Dscam C T 16: 96,819,951 R519H probably damaging Het
Efcab3 A T 11: 105,108,755 probably benign Het
Evi2a G T 11: 79,527,270 N171K probably damaging Het
Fbxl15 T C 19: 46,330,245 L286P probably damaging Het
Fpr1 T A 17: 17,877,263 I155F probably benign Het
Gcat C T 15: 79,033,994 A84V probably null Het
Gls A G 1: 52,191,134 F473L possibly damaging Het
Gnat1 T C 9: 107,676,965 D169G probably damaging Het
Grm3 A C 5: 9,589,958 M29R probably benign Het
Herc1 A T 9: 66,467,803 D3303V probably damaging Het
Ibsp G A 5: 104,310,539 G314D unknown Het
Lgr6 C A 1: 134,987,472 A513S probably damaging Het
Lrmp C T 6: 145,174,511 T484M possibly damaging Het
Lrriq4 T A 3: 30,650,761 C313S probably damaging Het
March10 G T 11: 105,390,583 T292K probably damaging Het
Mcoln2 C A 3: 146,190,382 Y6* probably null Het
Mup4 A G 4: 59,958,076 I164T probably damaging Het
Myo1b T C 1: 51,778,558 probably benign Het
Ncam1 A G 9: 49,544,800 I506T probably damaging Het
Notch1 A T 2: 26,480,964 probably benign Het
Nr4a3 A T 4: 48,051,777 Q177L probably benign Het
Nsun4 A G 4: 116,052,950 S138P possibly damaging Het
Olfr11 G T 13: 21,639,390 N44K probably benign Het
Olfr403 A G 11: 74,195,679 M59V probably damaging Het
Olfr716 A T 7: 107,148,198 N294I probably damaging Het
Olfr729 T C 14: 50,148,358 N172S probably damaging Het
Pagr1a A T 7: 127,016,297 probably benign Het
Pcdhb2 A T 18: 37,296,290 I82L probably benign Het
Pds5b A T 5: 150,754,417 N500I probably damaging Het
Pik3r6 A T 11: 68,531,445 E223D possibly damaging Het
Pkhd1l1 A T 15: 44,540,988 probably benign Het
Prex1 T C 2: 166,580,463 D1204G probably damaging Het
Prickle1 C T 15: 93,505,074 E244K possibly damaging Het
Ptprd A T 4: 76,084,552 V211E probably damaging Het
Rad51d G A 11: 82,890,353 R23* probably null Het
Rapgef6 G A 11: 54,626,708 G262R probably damaging Het
Reln A G 5: 22,128,602 probably benign Het
Rev1 T C 1: 38,088,205 T325A probably damaging Het
Rnd3 T A 2: 51,132,506 I175L probably benign Het
Rp1 C A 1: 4,347,396 L1164F probably damaging Het
S100a7a T C 3: 90,655,635 V43A probably benign Het
Scaper A C 9: 55,602,918 Y1104* probably null Het
Scn2a T A 2: 65,764,594 V1929D probably benign Het
Scn3a T C 2: 65,529,441 N141S possibly damaging Het
Slc12a7 T G 13: 73,801,008 L718R probably damaging Het
Slc15a2 T C 16: 36,784,643 probably benign Het
Slc35b3 G A 13: 38,954,134 Q100* probably null Het
Slc9a5 T A 8: 105,355,153 V170E possibly damaging Het
Snx5 T G 2: 144,254,811 K278T possibly damaging Het
Sorbs2 T C 8: 45,789,963 probably benign Het
Stab1 C T 14: 31,151,690 W1008* probably null Het
Stab2 C T 10: 86,861,367 probably null Het
Tacc3 A G 5: 33,667,977 E377G probably benign Het
Tango6 T C 8: 106,689,039 L164P probably damaging Het
Tbc1d12 T A 19: 38,914,352 S570T possibly damaging Het
Thbs1 T C 2: 118,114,355 F217L probably damaging Het
Tmbim6 T A 15: 99,402,123 V40E probably damaging Het
Tmigd1 A T 11: 76,910,160 N158Y probably damaging Het
Tram1l1 A T 3: 124,321,931 K247* probably null Het
Tsc2 T C 17: 24,614,392 Y686C probably damaging Het
Tsga10 T C 1: 37,819,599 Q218R probably damaging Het
Uba6 G T 5: 86,140,423 A439D probably damaging Het
Ubn1 C A 16: 5,077,294 P735T probably damaging Het
Usp40 A G 1: 87,982,086 S549P probably benign Het
Utp20 T C 10: 88,819,339 T176A probably benign Het
Utp4 T G 8: 106,898,053 probably benign Het
Xpo5 C T 17: 46,207,927 probably benign Het
Zfp979 A T 4: 147,614,036 I72K possibly damaging Het
Other mutations in Top3b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00823:Top3b APN 16 16887622 missense probably damaging 0.97
IGL01512:Top3b APN 16 16891422 missense possibly damaging 0.74
IGL01552:Top3b APN 16 16887823 splice site probably benign
IGL01738:Top3b APN 16 16880604 missense probably benign 0.04
IGL02090:Top3b APN 16 16891470 missense possibly damaging 0.81
R0143:Top3b UTSW 16 16883525 missense probably damaging 0.97
R0883:Top3b UTSW 16 16879437 splice site probably benign
R1386:Top3b UTSW 16 16880629 missense probably benign 0.29
R1958:Top3b UTSW 16 16884302 missense possibly damaging 0.52
R1970:Top3b UTSW 16 16883519 missense probably damaging 1.00
R4211:Top3b UTSW 16 16882532 splice site probably null
R4292:Top3b UTSW 16 16883519 missense probably damaging 1.00
R4307:Top3b UTSW 16 16889617 splice site probably benign
R4832:Top3b UTSW 16 16890662 nonsense probably null
R5047:Top3b UTSW 16 16891418 missense probably benign 0.00
R5364:Top3b UTSW 16 16886970 missense probably benign 0.00
R5590:Top3b UTSW 16 16891577 intron probably benign
R5604:Top3b UTSW 16 16889535 nonsense probably null
R5719:Top3b UTSW 16 16885836 missense probably damaging 1.00
R5969:Top3b UTSW 16 16883565 critical splice donor site probably null
R6018:Top3b UTSW 16 16892892 missense probably damaging 1.00
R6144:Top3b UTSW 16 16879141 splice site probably null
R6155:Top3b UTSW 16 16891509 missense probably damaging 1.00
R6341:Top3b UTSW 16 16879071 missense probably damaging 0.98
R6700:Top3b UTSW 16 16892669 missense possibly damaging 0.48
R7417:Top3b UTSW 16 16877850 start gained probably benign
R7586:Top3b UTSW 16 16891368 missense probably benign 0.44
R7747:Top3b UTSW 16 16887721 missense probably benign 0.17
R8382:Top3b UTSW 16 16888003 missense probably damaging 1.00
R8438:Top3b UTSW 16 16891500 missense probably benign 0.04
X0011:Top3b UTSW 16 16890189 missense probably benign 0.00
Predicted Primers PCR Primer

Sequencing Primer
Posted On2014-03-14