Incidental Mutation 'R0201:Top2b'
ID 23668
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Name topoisomerase (DNA) II beta
Synonyms Top-2, D230016L12Rik
MMRRC Submission 038458-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.924) question?
Stock # R0201 (G1)
Quality Score 225
Status Validated
Chromosome 14
Chromosomal Location 6038976-6104585 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 16383174 bp (GRCm38)
Zygosity Heterozygous
Amino Acid Change Leucine to Proline at position 54 (L54P)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629]
AlphaFold Q64511
Predicted Effect probably damaging
Transcript: ENSMUST00000017629
AA Change: L54P

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: L54P

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
Meta Mutation Damage Score 0.6851 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.4%
  • 10x: 96.7%
  • 20x: 94.2%
Validation Efficiency 97% (91/94)
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: 87 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamdec1 A G 14: 68,819,406 (GRCm39) probably null Het
Adamts16 T A 13: 70,927,763 (GRCm39) Q492L possibly damaging Het
Aplnr A G 2: 84,967,521 (GRCm39) D182G probably damaging Het
Arnt2 G T 7: 84,010,867 (GRCm39) S3* probably null Het
Asxl3 T C 18: 22,656,211 (GRCm39) V1407A probably benign Het
Atg13 A T 2: 91,515,107 (GRCm39) probably null Het
Atm A T 9: 53,365,579 (GRCm39) probably benign Het
Birc6 T G 17: 74,916,322 (GRCm39) V1746G possibly damaging Het
Cbln1 G T 8: 88,198,741 (GRCm39) T43K probably benign Het
Cbx5 T C 15: 103,108,127 (GRCm39) T173A probably damaging Het
Cc2d2a A G 5: 43,894,854 (GRCm39) Y1437C probably damaging Het
Ccdc78 C A 17: 26,008,210 (GRCm39) probably benign Het
Cd2bp2 A G 7: 126,793,000 (GRCm39) Y341H probably damaging Het
Cdhr5 T A 7: 140,856,291 (GRCm39) D88V probably damaging Het
Ces1f T A 8: 93,993,957 (GRCm39) T275S probably null Het
Cimip4 T A 15: 78,263,028 (GRCm39) M209L probably damaging Het
Clca4a T C 3: 144,666,478 (GRCm39) N458S probably benign Het
Cog5 A G 12: 31,889,840 (GRCm39) K521R probably damaging Het
Csf2ra T A 19: 61,214,006 (GRCm39) T305S probably benign Het
Csmd3 T A 15: 47,483,125 (GRCm39) probably benign Het
Cts6 T A 13: 61,349,313 (GRCm39) R132* probably null Het
D5Ertd579e G T 5: 36,773,809 (GRCm39) N195K probably damaging Het
Ddx1 A G 12: 13,273,809 (GRCm39) V606A probably damaging Het
Dip2b G A 15: 100,084,028 (GRCm39) D884N probably damaging Het
Ehhadh A G 16: 21,592,243 (GRCm39) probably null Het
Enpp1 T A 10: 24,529,815 (GRCm39) T608S probably benign Het
Fancm T C 12: 65,148,406 (GRCm39) Y674H probably damaging Het
Fat4 T A 3: 38,945,745 (GRCm39) V1546D probably damaging Het
Fsd1 G A 17: 56,297,522 (GRCm39) A158T probably benign Het
Fzd2 T A 11: 102,496,948 (GRCm39) M464K probably damaging Het
Gjc2 A G 11: 59,068,416 (GRCm39) F22S possibly damaging Het
Gria2 T C 3: 80,615,145 (GRCm39) Y445C probably damaging Het
Hsdl1 T A 8: 120,292,995 (GRCm39) I147F possibly damaging Het
Ifi44 T C 3: 151,451,273 (GRCm39) Y226C probably damaging Het
Il16 A G 7: 83,371,516 (GRCm39) C97R probably damaging Het
Impg1 A T 9: 80,252,843 (GRCm39) S369T probably damaging Het
Jmjd1c A G 10: 67,054,888 (GRCm39) T390A unknown Het
Lgi1 A G 19: 38,289,741 (GRCm39) E269G possibly damaging Het
Lrp6 G T 6: 134,427,860 (GRCm39) Y1577* probably null Het
Lrrc74a G T 12: 86,808,547 (GRCm39) probably benign Het
Man1c1 A T 4: 134,367,709 (GRCm39) probably null Het
Map1lc3b A C 8: 122,317,289 (GRCm39) Q9P possibly damaging Het
Mboat1 G A 13: 30,386,358 (GRCm39) R124H probably benign Het
Mcu A G 10: 59,292,499 (GRCm39) L60P probably damaging Het
Mrs2 G T 13: 25,202,517 (GRCm39) Q75K probably benign Het
Muc2 CGTG CGTGTG 7: 141,699,185 (GRCm38) probably null Het
Neb G A 2: 52,096,890 (GRCm39) probably benign Het
Nlrp2 C T 7: 5,331,328 (GRCm39) G356D probably benign Het
Notch3 A G 17: 32,375,122 (GRCm39) probably benign Het
Npr2 A C 4: 43,641,617 (GRCm39) S474R probably damaging Het
Nup58 A G 14: 60,482,065 (GRCm39) F100L probably benign Het
Osbpl6 A C 2: 76,376,386 (GRCm39) D87A possibly damaging Het
Pabpc2 A T 18: 39,908,360 (GRCm39) M542L probably benign Het
Papln A G 12: 83,829,801 (GRCm39) probably benign Het
Parpbp T C 10: 87,928,758 (GRCm39) I561V possibly damaging Het
Pcdhb13 C T 18: 37,575,634 (GRCm39) A4V probably benign Het
Pelp1 T C 11: 70,286,530 (GRCm39) T533A possibly damaging Het
Poldip3 T A 15: 83,019,497 (GRCm39) M182L probably benign Het
Por T C 5: 135,760,032 (GRCm39) S240P possibly damaging Het
Pramel15 A T 4: 144,103,843 (GRCm39) probably benign Het
Pramel28 T C 4: 143,691,460 (GRCm39) E421G probably damaging Het
Prss22 A T 17: 24,215,275 (GRCm39) V167D probably damaging Het
Prss37 A C 6: 40,493,283 (GRCm39) L61R probably damaging Het
Psmd1 C T 1: 86,046,338 (GRCm39) T702M probably benign Het
Pxdn G T 12: 30,052,430 (GRCm39) G869V possibly damaging Het
Rabgap1l A G 1: 160,281,315 (GRCm39) probably benign Het
Rapgef6 T C 11: 54,510,767 (GRCm39) V228A probably damaging Het
Rnf169 T C 7: 99,575,210 (GRCm39) R462G possibly damaging Het
Rnft2 A G 5: 118,332,745 (GRCm39) probably benign Het
Sgo2b T C 8: 64,379,670 (GRCm39) D1054G probably benign Het
Sh3bgr T C 16: 96,029,717 (GRCm39) probably benign Het
Slc12a4 A G 8: 106,671,982 (GRCm39) V910A possibly damaging Het
Slc6a12 A T 6: 121,332,331 (GRCm39) I222F probably benign Het
Spty2d1 G A 7: 46,647,649 (GRCm39) R427* probably null Het
Ssc5d A G 7: 4,947,662 (GRCm39) T1339A probably benign Het
Sspo A C 6: 48,432,686 (GRCm39) E854A possibly damaging Het
Stx7 A G 10: 24,060,977 (GRCm39) probably benign Het
Styk1 A T 6: 131,278,693 (GRCm39) probably benign Het
Tmem163 T G 1: 127,596,374 (GRCm39) probably benign Het
Tmppe C CT 9: 114,233,707 (GRCm39) probably null Het
Tmx2 A G 2: 84,503,426 (GRCm39) V229A probably benign Het
Trim62 A T 4: 128,796,343 (GRCm39) Y280F probably benign Het
Tssk4 A T 14: 55,889,016 (GRCm39) K181* probably null Het
Tssk4 A T 14: 55,889,017 (GRCm39) K181M probably damaging Het
Ubn1 A G 16: 4,882,478 (GRCm39) D313G probably damaging Het
Ugt1a10 C T 1: 88,142,845 (GRCm39) P113L probably damaging Het
Ugt1a10 C T 1: 88,145,971 (GRCm39) P473L probably 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
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
R7162:Top2b UTSW 14 16,416,653 (GRCm38) missense probably benign 0.00
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'- TCCTTTGGGAAGTTTTGGGGAACAC -3'
(R):5'- AGAGTCTCGCGCATTGTCTTAGC -3'

Sequencing Primer
(F):5'- CCTTGATATCTTAGAGAGCTGGGAC -3'
(R):5'- GCGCATTGTCTTAGCTCCTC -3'
Posted On 2013-04-16