Incidental Mutation 'R6700:Top3b'
ID 528239
Institutional Source Beutler Lab
Gene Symbol Top3b
Ensembl Gene ENSMUSG00000022779
Gene Name topoisomerase (DNA) III beta
Synonyms Topo III beta
MMRRC Submission 044818-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.248) question?
Stock # R6700 (G1)
Quality Score 225.009
Status Validated
Chromosome 16
Chromosomal Location 16688600-16710854 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16710533 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 788 (S788P)
Ref Sequence ENSEMBL: ENSMUSP00000156132 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000023465] [ENSMUST00000027373] [ENSMUST00000119787] [ENSMUST00000232581] [ENSMUST00000232247]
AlphaFold Q9Z321
Predicted Effect possibly damaging
Transcript: ENSMUST00000023465
AA Change: S788P

PolyPhen 2 Score 0.480 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000023465
Gene: ENSMUSG00000022779
AA Change: S788P

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 possibly damaging
Transcript: ENSMUST00000119787
AA Change: S788P

PolyPhen 2 Score 0.480 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000112913
Gene: ENSMUSG00000022779
AA Change: S788P

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: ENSMUST00000156951
SMART Domains Protein: ENSMUSP00000115214
Gene: ENSMUSG00000022779

DomainStartEndE-ValueType
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 possibly damaging
Transcript: ENSMUST00000232581
AA Change: S788P

PolyPhen 2 Score 0.480 (Sensitivity: 0.89; Specificity: 0.90)
Predicted Effect probably benign
Transcript: ENSMUST00000232117
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232523
Predicted Effect noncoding transcript
Transcript: ENSMUST00000231834
Predicted Effect probably benign
Transcript: ENSMUST00000231966
Predicted Effect probably benign
Transcript: ENSMUST00000232247
Predicted Effect noncoding transcript
Transcript: ENSMUST00000232153
Meta Mutation Damage Score 0.3987 question?
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.7%
  • 10x: 98.6%
  • 20x: 96.0%
Validation Efficiency 100% (62/62)
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
4930563M21Rik T C 9: 55,881,140 (GRCm39) E504G unknown Het
Aak1 G A 6: 86,941,185 (GRCm39) E660K unknown Het
Abcc9 A G 6: 142,633,013 (GRCm39) I243T possibly damaging Het
Baiap3 A G 17: 25,463,000 (GRCm39) S1013P probably damaging Het
Bdp1 A T 13: 100,162,036 (GRCm39) D2295E probably benign Het
Blm A G 7: 80,113,598 (GRCm39) V1233A possibly damaging Het
Brsk1 G T 7: 4,695,700 (GRCm39) V62F probably damaging Het
Cacna2d1 A G 5: 16,570,458 (GRCm39) E1011G probably damaging Het
Cdh18 A G 15: 23,474,191 (GRCm39) Y687C probably benign Het
Cfap221 T C 1: 119,883,421 (GRCm39) E250G possibly damaging Het
Col5a3 C T 9: 20,690,329 (GRCm39) G1162R probably damaging Het
Cps1 G T 1: 67,268,682 (GRCm39) probably null Het
Cyp4v3 A G 8: 45,760,130 (GRCm39) V34A probably damaging Het
Dnah9 C T 11: 65,846,192 (GRCm39) V2949M probably damaging Het
Dst A C 1: 34,295,404 (GRCm39) Q3454P probably damaging Het
Filip1l T C 16: 57,391,611 (GRCm39) L495P possibly damaging Het
Flnb C A 14: 7,892,189 (GRCm38) H619Q probably damaging Het
Fst G C 13: 114,595,043 (GRCm39) A27G probably benign Het
Ggnbp2 C A 11: 84,730,931 (GRCm39) R364L probably damaging Het
Gins1 C T 2: 150,758,148 (GRCm39) A78V probably damaging Het
Gm19410 T A 8: 36,274,664 (GRCm39) L1495H possibly damaging Het
Golgb1 C T 16: 36,695,946 (GRCm39) probably benign Het
Lin7a A G 10: 107,216,167 (GRCm39) probably null Het
Lrp6 A T 6: 134,456,523 (GRCm39) C914S probably damaging Het
Lrrc8e G A 8: 4,286,034 (GRCm39) G753D probably damaging Het
Mapk4 A G 18: 74,063,882 (GRCm39) Y447H probably damaging Het
Mbl1 A G 14: 40,880,511 (GRCm39) N133S probably damaging Het
Mrps30 A T 13: 118,517,134 (GRCm39) S362T probably damaging Het
Myo1c C T 11: 75,562,461 (GRCm39) P918S probably benign Het
Nbea T C 3: 55,989,869 (GRCm39) N329S possibly damaging Het
Or13p10 A T 4: 118,523,609 (GRCm39) K298N probably benign Het
Or51k2 G A 7: 103,596,531 (GRCm39) V253M probably damaging Het
Or5b120 A T 19: 13,480,177 (GRCm39) I157F probably damaging Het
Or6k14 G A 1: 173,927,405 (GRCm39) C127Y probably damaging Het
Pik3c3 A G 18: 30,449,954 (GRCm39) E589G probably benign Het
Plb1 A T 5: 32,490,808 (GRCm39) D1035V probably damaging Het
Plekhg1 G T 10: 3,907,373 (GRCm39) M763I probably benign Het
Poc5 A G 13: 96,531,003 (GRCm39) N67S probably benign Het
Psmd13 T A 7: 140,470,522 (GRCm39) W255R probably damaging Het
Rbm27 A G 18: 42,459,004 (GRCm39) Y735C probably damaging Het
Rhpn2 A T 7: 35,075,594 (GRCm39) N257I possibly damaging Het
Rilpl2 C T 5: 124,607,843 (GRCm39) E126K probably damaging Het
Rp1 G A 1: 4,420,119 (GRCm39) T331M probably damaging Het
Sh3pxd2a A G 19: 47,353,146 (GRCm39) V105A possibly damaging Het
Slc9a9 T C 9: 94,818,364 (GRCm39) S253P possibly damaging Het
St8sia3 C T 18: 64,398,452 (GRCm39) probably benign Het
Strbp T C 2: 37,493,975 (GRCm39) D366G probably null Het
Tbx5 A G 5: 120,009,462 (GRCm39) T324A probably benign Het
Tex15 T A 8: 34,064,917 (GRCm39) I1449N possibly damaging Het
Tmtc3 C T 10: 100,307,339 (GRCm39) V222I probably benign Het
Tsc22d4 A G 5: 137,756,785 (GRCm39) D71G probably benign Het
Tubgcp4 T A 2: 121,020,329 (GRCm39) V434E probably benign Het
Ufsp1 A G 5: 137,293,158 (GRCm39) Y36C possibly damaging Het
Unc79 T A 12: 103,091,962 (GRCm39) H1956Q possibly damaging Het
Usp34 A T 11: 23,389,011 (GRCm39) N2217I probably damaging Het
Vmn2r112 A T 17: 22,822,462 (GRCm39) D380V possibly damaging Het
Vmn2r13 A G 5: 109,322,938 (GRCm39) I117T probably benign Het
Vmn2r53 A G 7: 12,315,633 (GRCm39) Y729H probably damaging Het
Wnt3a A T 11: 59,140,587 (GRCm39) L310M probably damaging Het
Zc3h7a T C 16: 10,976,831 (GRCm39) Q155R 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
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
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'- ATGCGAGAATGGAGTCCTTG -3'
(R):5'- TGTCATACAAAGTAAGCAGCCAG -3'

Sequencing Primer
(F):5'- CGAGAATGGAGTCCTTGTTCTG -3'
(R):5'- CTTTTGGCCGCCTAGGG -3'
Posted On 2018-07-24