Incidental Mutation 'R7162:Top2b'
ID 557676
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
MMRRC Submission 045261-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.924) question?
Stock # R7162 (G1)
Quality Score 225.009
Status Validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16416653 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 1138 (S1138P)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000161693]
AlphaFold Q64511
Predicted Effect probably benign
Transcript: ENSMUST00000017629
AA Change: S1138P

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: S1138P

DomainStartEndE-ValueType
Blast:TOP2c 32 70 7e-10 BLAST
HATPase_c 85 234 1.91e-2 SMART
TOP2c 89 679 N/A SMART
TOP4c 702 1175 2.55e-230 SMART
low complexity region 1201 1215 N/A INTRINSIC
low complexity region 1287 1299 N/A INTRINSIC
low complexity region 1324 1336 N/A INTRINSIC
low complexity region 1360 1382 N/A INTRINSIC
Pfam:DTHCT 1495 1597 4.6e-31 PFAM
Predicted Effect
SMART Domains Protein: ENSMUSP00000124889
Gene: ENSMUSG00000017485
AA Change: S184P

DomainStartEndE-ValueType
TOP4c 2 222 3.97e-12 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000161693
AA Change: S77P

PolyPhen 2 Score 0.107 (Sensitivity: 0.93; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000123992
Gene: ENSMUSG00000017485
AA Change: S77P

DomainStartEndE-ValueType
Pfam:DNA_topoisoIV 1 117 1.2e-12 PFAM
low complexity region 161 173 N/A INTRINSIC
low complexity region 198 210 N/A INTRINSIC
low complexity region 234 256 N/A INTRINSIC
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 99.0%
Validation Efficiency 99% (85/86)
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 nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, beta, is localized to chromosome 3 and the alpha form is localized to chromosome 17. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2016]
PHENOTYPE: Homozygous null mice exhibit abnormal innervation. Offspring die shortly after birth due to respiratory failure. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 86 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Akp3 C T 1: 87,055,471 (GRCm39) T506I unknown Het
Ank1 T C 8: 23,622,370 (GRCm39) W1640R possibly damaging Het
Atp2a2 A G 5: 122,627,387 (GRCm39) M126T probably benign Het
Bptf A T 11: 106,934,457 (GRCm39) probably null Het
Brat1 T C 5: 140,696,004 (GRCm39) V125A probably benign Het
Cables1 T C 18: 12,059,423 (GRCm39) probably null Het
Cabp5 A T 7: 13,135,260 (GRCm39) M67L probably damaging Het
Cacna1b A C 2: 24,590,034 (GRCm39) I558S probably benign Het
Ccdc166 A G 15: 75,853,044 (GRCm39) S308P probably benign Het
Cfap57 C T 4: 118,472,128 (GRCm39) V84I probably benign Het
Cfhr2 A G 1: 139,741,264 (GRCm39) V237A probably benign Het
Clybl C A 14: 122,608,732 (GRCm39) S108* probably null Het
Cubn A G 2: 13,347,309 (GRCm39) Y2070H probably damaging Het
Cyp8b1 A G 9: 121,744,777 (GRCm39) F185S probably damaging Het
Dennd2c T A 3: 103,063,423 (GRCm39) V620D probably damaging Het
Dis3l2 T C 1: 86,971,752 (GRCm39) F597L possibly damaging Het
Eif3f G A 7: 108,539,938 (GRCm39) R282H probably benign Het
Ell C A 8: 71,031,559 (GRCm39) R86S possibly damaging Het
Eppk1 A G 15: 75,990,809 (GRCm39) V2024A possibly damaging Het
Exoc6 T C 19: 37,565,566 (GRCm39) I214T probably damaging Het
Faim2 A G 15: 99,419,048 (GRCm39) probably null Het
Gli1 A G 10: 127,168,306 (GRCm39) S516P probably benign Het
Gm18596 A T 10: 77,578,034 (GRCm39) S147T unknown Het
Gm19965 A G 1: 116,750,095 (GRCm39) Y592C unknown Het
Gng12 T C 6: 66,994,285 (GRCm39) S36P unknown Het
Gramd2b G A 18: 56,618,529 (GRCm39) probably null Het
Hmcn1 T A 1: 150,624,744 (GRCm39) T1054S probably benign Het
Ifngr1 A G 10: 19,485,101 (GRCm39) T367A probably benign Het
Il21r G T 7: 125,231,483 (GRCm39) V304L probably benign Het
Ino80d G A 1: 63,104,894 (GRCm39) T394M probably damaging Het
Itfg2 C T 6: 128,387,546 (GRCm39) V380M probably damaging Het
Kcna5 C T 6: 126,510,806 (GRCm39) V441I possibly damaging Het
Kcp T A 6: 29,497,199 (GRCm39) probably null Het
Kdf1 C T 4: 133,257,229 (GRCm39) T375I unknown Het
Klk1b1 A T 7: 43,618,671 (GRCm39) D16V probably damaging Het
Krtap5-4 A C 7: 141,857,335 (GRCm39) T2P unknown Het
Lamtor1 A G 7: 101,555,243 (GRCm39) D13G probably benign Het
Lrp10 T C 14: 54,703,163 (GRCm39) V72A possibly damaging Het
Lrrc1 C A 9: 77,339,472 (GRCm39) A503S probably benign Het
Mylk A T 16: 34,742,899 (GRCm39) D1137V probably damaging Het
Myo5b C G 18: 74,828,498 (GRCm39) L717V probably benign Het
Myoz3 T A 18: 60,709,485 (GRCm39) R225S probably damaging Het
Myrf A G 19: 10,196,010 (GRCm39) F335L possibly damaging Het
Nfib A C 4: 82,268,677 (GRCm39) S292A probably damaging Het
Notch3 G T 17: 32,365,423 (GRCm39) H1096Q probably damaging Het
Nt5c1a A G 4: 123,107,898 (GRCm39) R194G probably benign Het
Or10d3 A G 9: 39,461,525 (GRCm39) I214T probably damaging Het
Or5a1 A G 19: 12,097,501 (GRCm39) F192L possibly damaging Het
Parp4 A G 14: 56,886,333 (GRCm39) E1804G unknown Het
Pcdhac2 A T 18: 37,278,840 (GRCm39) I607L probably benign Het
Pcdhb5 A G 18: 37,454,739 (GRCm39) D373G probably benign Het
Pcf11 A T 7: 92,313,221 (GRCm39) V154E probably damaging Het
Pdia3 T G 2: 121,260,002 (GRCm39) D180E probably benign Het
Piezo2 C A 18: 63,257,780 (GRCm39) V313F possibly damaging Het
Pik3ap1 C A 19: 41,309,965 (GRCm39) A452S probably benign Het
Plb1 A G 5: 32,507,007 (GRCm39) K1194R probably benign Het
Pld3 A C 7: 27,231,899 (GRCm39) W431G probably damaging Het
Plekha3 T C 2: 76,523,110 (GRCm39) probably null Het
Ppm1f G T 16: 16,732,057 (GRCm39) R169L probably damaging Het
Ppp2r3d A G 9: 124,439,673 (GRCm38) V60A Het
Prop1 T A 11: 50,842,881 (GRCm39) D102V probably damaging Het
Rbm27 G A 18: 42,447,092 (GRCm39) G446R unknown Het
Rc3h2 C A 2: 37,299,617 (GRCm39) V138L possibly damaging Het
Rorc G A 3: 94,284,915 (GRCm39) probably null Het
Sardh A G 2: 27,087,702 (GRCm39) V723A possibly damaging Het
Sart3 A G 5: 113,900,896 (GRCm39) Y181H probably damaging Het
Sbpl A T 17: 24,172,439 (GRCm39) M160K possibly damaging Het
Sh3gl3 A G 7: 81,933,350 (GRCm39) S238G probably benign Het
Slc22a30 A G 19: 8,314,081 (GRCm39) probably null Het
Slc3a1 A T 17: 85,371,442 (GRCm39) R665* probably null Het
Stk32a C A 18: 43,430,649 (GRCm39) Y186* probably null Het
Stxbp6 T C 12: 44,949,663 (GRCm39) N89D probably benign Het
Svep1 A G 4: 58,070,262 (GRCm39) F2508S possibly damaging Het
Tas1r1 A G 4: 152,116,695 (GRCm39) V313A possibly damaging Het
Tmem81 T C 1: 132,435,355 (GRCm39) Y54H probably damaging Het
Tmtc1 T C 6: 148,172,985 (GRCm39) N582S probably damaging Het
Trim24 T A 6: 37,942,456 (GRCm39) N989K possibly damaging Het
Trim72 T A 7: 127,606,821 (GRCm39) M145K probably benign Het
Ttll9 T A 2: 152,831,523 (GRCm39) S154T probably damaging Het
Tusc3 T C 8: 39,593,741 (GRCm39) V286A probably benign Het
Vat1l C A 8: 114,963,518 (GRCm39) H185N probably damaging Het
Vmn1r209 A T 13: 22,990,128 (GRCm39) D187E probably damaging Het
Vmn2r87 T C 10: 130,313,416 (GRCm39) N450S probably benign Het
Wdr7 T A 18: 63,857,210 (GRCm39) D95E possibly damaging Het
Zfp937 C T 2: 150,081,439 (GRCm39) H490Y probably benign Het
Zfp974 A T 7: 27,610,944 (GRCm39) H260Q possibly damaging Het
Other mutations in Top2b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00430:Top2b APN 14 16,422,692 (GRCm38) missense probably benign 0.00
IGL00730:Top2b APN 14 16,389,831 (GRCm38) missense probably damaging 1.00
IGL00917:Top2b APN 14 16,407,354 (GRCm38) missense probably benign 0.05
IGL01959:Top2b APN 14 16,422,695 (GRCm38) missense probably benign 0.19
IGL02019:Top2b APN 14 16,409,965 (GRCm38) missense probably benign 0.44
IGL02119:Top2b APN 14 16,406,733 (GRCm38) missense probably damaging 1.00
IGL02136:Top2b APN 14 16,407,103 (GRCm38) unclassified probably benign
IGL02148:Top2b APN 14 16,400,488 (GRCm38) missense probably damaging 1.00
IGL02496:Top2b APN 14 16,387,335 (GRCm38) missense probably benign
IGL02503:Top2b APN 14 16,407,163 (GRCm38) missense possibly damaging 0.92
IGL02672:Top2b APN 14 16,409,166 (GRCm38) unclassified probably benign
IGL02721:Top2b APN 14 16,409,236 (GRCm38) missense probably damaging 1.00
IGL02886:Top2b APN 14 16,365,688 (GRCm38) missense possibly damaging 0.73
IGL03252:Top2b APN 14 16,393,163 (GRCm38) missense possibly damaging 0.60
PIT4434001:Top2b UTSW 14 16,423,780 (GRCm38) critical splice donor site probably null
R0092:Top2b UTSW 14 16,409,263 (GRCm38) missense probably damaging 1.00
R0201:Top2b UTSW 14 16,383,174 (GRCm38) missense probably damaging 1.00
R0390:Top2b UTSW 14 16,418,442 (GRCm38) missense probably benign 0.00
R0394:Top2b UTSW 14 16,413,556 (GRCm38) splice site probably null
R1159:Top2b UTSW 14 16,430,329 (GRCm38) missense possibly damaging 0.81
R1424:Top2b UTSW 14 16,383,177 (GRCm38) missense probably damaging 1.00
R1519:Top2b UTSW 14 16,408,953 (GRCm38) splice site probably null
R1561:Top2b UTSW 14 16,398,993 (GRCm38) missense possibly damaging 0.80
R1713:Top2b UTSW 14 16,409,823 (GRCm38) missense probably benign 0.05
R1987:Top2b UTSW 14 16,398,916 (GRCm38) missense probably damaging 0.99
R2219:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2287:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2422:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R2679:Top2b UTSW 14 16,413,947 (GRCm38) missense probably damaging 1.00
R3687:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3707:Top2b UTSW 14 16,388,447 (GRCm38) missense probably damaging 1.00
R3810:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3812:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3815:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3816:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R3818:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4023:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4025:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4026:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4133:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4157:Top2b UTSW 14 16,384,491 (GRCm38) missense probably benign 0.42
R4179:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4180:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4300:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4376:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4377:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4492:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4549:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4550:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4581:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4582:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4628:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4630:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4667:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4668:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4669:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R4698:Top2b UTSW 14 16,387,331 (GRCm38) nonsense probably null
R4769:Top2b UTSW 14 16,398,991 (GRCm38) missense probably damaging 1.00
R4809:Top2b UTSW 14 16,383,125 (GRCm38) missense probably benign 0.06
R4899:Top2b UTSW 14 16,387,313 (GRCm38) missense probably damaging 1.00
R5035:Top2b UTSW 14 16,409,966 (GRCm38) missense probably benign 0.01
R5621:Top2b UTSW 14 16,387,280 (GRCm38) missense probably damaging 1.00
R5631:Top2b UTSW 14 16,409,882 (GRCm38) missense probably damaging 1.00
R5685:Top2b UTSW 14 16,413,666 (GRCm38) missense probably damaging 1.00
R5732:Top2b UTSW 14 16,400,106 (GRCm38) missense possibly damaging 0.92
R5939:Top2b UTSW 14 16,422,786 (GRCm38) missense probably damaging 0.96
R6007:Top2b UTSW 14 16,423,779 (GRCm38) critical splice donor site probably null
R6087:Top2b UTSW 14 16,409,864 (GRCm38) missense probably benign 0.14
R6144:Top2b UTSW 14 16,423,740 (GRCm38) missense possibly damaging 0.48
R6196:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6218:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6229:Top2b UTSW 14 16,409,838 (GRCm38) missense probably damaging 1.00
R6249:Top2b UTSW 14 16,399,006 (GRCm38) missense probably damaging 1.00
R6337:Top2b UTSW 14 16,399,026 (GRCm38) missense possibly damaging 0.77
R6353:Top2b UTSW 14 16,416,671 (GRCm38) missense probably damaging 1.00
R6512:Top2b UTSW 14 16,409,854 (GRCm38) missense possibly damaging 0.94
R6573:Top2b UTSW 14 16,398,991 (GRCm38) missense probably damaging 1.00
R6614:Top2b UTSW 14 16,407,142 (GRCm38) nonsense probably null
R6844:Top2b UTSW 14 16,429,383 (GRCm38) missense possibly damaging 0.94
R6848:Top2b UTSW 14 16,409,958 (GRCm38) missense possibly damaging 0.89
R6871:Top2b UTSW 14 16,409,189 (GRCm38) missense probably damaging 1.00
R6895:Top2b UTSW 14 16,413,604 (GRCm38) missense probably benign 0.06
R7247:Top2b UTSW 14 16,416,962 (GRCm38) missense probably benign 0.08
R7250:Top2b UTSW 14 16,420,411 (GRCm38) missense probably benign
R7359:Top2b UTSW 14 16,407,376 (GRCm38) missense probably null 1.00
R7365:Top2b UTSW 14 16,416,649 (GRCm38) missense probably benign 0.04
R7493:Top2b UTSW 14 16,416,605 (GRCm38) missense probably benign 0.00
R7528:Top2b UTSW 14 16,395,427 (GRCm38) nonsense probably null
R7562:Top2b UTSW 14 16,412,946 (GRCm38) missense probably benign 0.04
R7594:Top2b UTSW 14 16,428,587 (GRCm38) missense probably benign
R7670:Top2b UTSW 14 16,416,620 (GRCm38) missense possibly damaging 0.61
R7894:Top2b UTSW 14 16,413,081 (GRCm38) missense possibly damaging 0.68
R8031:Top2b UTSW 14 16,412,986 (GRCm38) missense probably damaging 0.98
R8150:Top2b UTSW 14 16,393,291 (GRCm38) missense probably damaging 0.99
R8214:Top2b UTSW 14 16,383,177 (GRCm38) missense probably damaging 1.00
R8299:Top2b UTSW 14 16,386,123 (GRCm38) missense possibly damaging 0.68
R8977:Top2b UTSW 14 16,393,239 (GRCm38) missense probably benign 0.36
R9562:Top2b UTSW 14 16,365,718 (GRCm38) missense probably benign 0.09
R9565:Top2b UTSW 14 16,365,718 (GRCm38) missense probably benign 0.09
R9798:Top2b UTSW 14 16,389,845 (GRCm38) missense probably damaging 1.00
X0028:Top2b UTSW 14 16,384,499 (GRCm38) nonsense probably null
Z1176:Top2b UTSW 14 16,395,434 (GRCm38) missense probably damaging 1.00
Z1177:Top2b UTSW 14 16,416,953 (GRCm38) missense probably benign
Predicted Primers PCR Primer
(F):5'- GCATTAACAGTACAGCATTTAAGCC -3'
(R):5'- GAGATCATTAACCTCTCGCCCC -3'

Sequencing Primer
(F):5'- CTGCAGAAGAGGAAGATTCA -3'
(R):5'- TCGCCCCTACAATTGAAAGAGAGAG -3'
Posted On 2019-06-26