Incidental Mutation 'R0201:Top2b'
ID23668
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Nametopoisomerase (DNA) II beta
SynonymsD230016L12Rik, Top-2
MMRRC Submission 038458-MU
Accession Numbers
Is this an essential gene? Probably essential (E-score: 0.904) question?
Stock #R0201 (G1)
Quality Score225
Status Validated
Chromosome14
Chromosomal Location16365179-16435462 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 16383174 bp
ZygosityHeterozygous
Amino Acid Change Leucine to Proline at position 54 (L54P)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629]
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: 68,581,957 probably null Het
Adamts16 T A 13: 70,779,644 Q492L possibly damaging Het
Aplnr A G 2: 85,137,177 D182G probably damaging Het
Arnt2 G T 7: 84,361,659 S3* probably null Het
Asxl3 T C 18: 22,523,154 V1407A probably benign Het
Atg13 A T 2: 91,684,762 probably null Het
Atm A T 9: 53,454,279 probably benign Het
Birc6 T G 17: 74,609,327 V1746G possibly damaging Het
Cbln1 G T 8: 87,472,113 T43K probably benign Het
Cbx5 T C 15: 103,199,700 T173A probably damaging Het
Cc2d2a A G 5: 43,737,512 Y1437C probably damaging Het
Ccdc78 C A 17: 25,789,236 probably benign Het
Cd2bp2 A G 7: 127,193,828 Y341H probably damaging Het
Cdhr5 T A 7: 141,276,378 D88V probably damaging Het
Ces1f T A 8: 93,267,329 T275S probably null Het
Clca4a T C 3: 144,960,717 N458S probably benign Het
Cog5 A G 12: 31,839,841 K521R probably damaging Het
Csf2ra T A 19: 61,225,568 T305S probably benign Het
Csmd3 T A 15: 47,619,729 probably benign Het
Cts6 T A 13: 61,201,499 R132* probably null Het
D5Ertd579e G T 5: 36,616,465 N195K probably damaging Het
Ddx1 A G 12: 13,223,808 V606A probably damaging Het
Dip2b G A 15: 100,186,147 D884N probably damaging Het
Ehhadh A G 16: 21,773,493 probably null Het
Enpp1 T A 10: 24,653,917 T608S probably benign Het
Fancm T C 12: 65,101,632 Y674H probably damaging Het
Fat4 T A 3: 38,891,596 V1546D probably damaging Het
Fsd1 G A 17: 55,990,522 A158T probably benign Het
Fzd2 T A 11: 102,606,122 M464K probably damaging Het
Gjc2 A G 11: 59,177,590 F22S possibly damaging Het
Gm13101 T C 4: 143,964,890 E421G probably damaging Het
Gria2 T C 3: 80,707,838 Y445C probably damaging Het
Hsdl1 T A 8: 119,566,256 I147F possibly damaging Het
Ifi44 T C 3: 151,745,636 Y226C probably damaging Het
Il16 A G 7: 83,722,308 C97R probably damaging Het
Impg1 A T 9: 80,345,561 S369T probably damaging Het
Jmjd1c A G 10: 67,219,109 T390A unknown Het
Lgi1 A G 19: 38,301,293 E269G possibly damaging Het
Lrp6 G T 6: 134,450,897 Y1577* probably null Het
Lrrc74a G T 12: 86,761,773 probably benign Het
Man1c1 A T 4: 134,640,398 probably null Het
Map1lc3b A C 8: 121,590,550 Q9P possibly damaging Het
Mboat1 G A 13: 30,202,375 R124H probably benign Het
Mcu A G 10: 59,456,677 L60P probably damaging Het
Mrs2 G T 13: 25,018,534 Q75K probably benign Het
Muc2 CGTG CGTGTG 7: 141,699,185 probably null Het
Neb G A 2: 52,206,878 probably benign Het
Nlrp2 C T 7: 5,328,329 G356D probably benign Het
Notch3 A G 17: 32,156,148 probably benign Het
Npr2 A C 4: 43,641,617 S474R probably damaging Het
Nupl1 A G 14: 60,244,616 F100L probably benign Het
Osbpl6 A C 2: 76,546,042 D87A possibly damaging Het
Pabpc2 A T 18: 39,775,307 M542L probably benign Het
Papln A G 12: 83,783,027 probably benign Het
Parpbp T C 10: 88,092,896 I561V possibly damaging Het
Pcdhb13 C T 18: 37,442,581 A4V probably benign Het
Pelp1 T C 11: 70,395,704 T533A possibly damaging Het
Poldip3 T A 15: 83,135,296 M182L probably benign Het
Por T C 5: 135,731,178 S240P possibly damaging Het
Pramef20 A T 4: 144,377,273 probably benign Het
Prss22 A T 17: 23,996,301 V167D probably damaging Het
Prss37 A C 6: 40,516,349 L61R probably damaging Het
Psmd1 C T 1: 86,118,616 T702M probably benign Het
Pxdn G T 12: 30,002,431 G869V possibly damaging Het
Rabgap1l A G 1: 160,453,745 probably benign Het
Rapgef6 T C 11: 54,619,941 V228A probably damaging Het
Rnf169 T C 7: 99,926,003 R462G possibly damaging Het
Rnft2 A G 5: 118,194,680 probably benign Het
Sgo2b T C 8: 63,926,636 D1054G probably benign Het
Sh3bgr T C 16: 96,228,517 probably benign Het
Slc12a4 A G 8: 105,945,350 V910A possibly damaging Het
Slc6a12 A T 6: 121,355,372 I222F probably benign Het
Spty2d1 G A 7: 46,997,901 R427* probably null Het
Ssc5d A G 7: 4,944,663 T1339A probably benign Het
Sspo A C 6: 48,455,752 E854A possibly damaging Het
Stx7 A G 10: 24,185,079 probably benign Het
Styk1 A T 6: 131,301,730 probably benign Het
Tex33 T A 15: 78,378,828 M209L probably damaging Het
Tmem163 T G 1: 127,668,637 probably benign Het
Tmppe C CT 9: 114,404,639 probably null Het
Tmx2 A G 2: 84,673,082 V229A probably benign Het
Trim62 A T 4: 128,902,550 Y280F probably benign Het
Tssk4 A T 14: 55,651,559 K181* probably null Het
Tssk4 A T 14: 55,651,560 K181M probably damaging Het
Ubn1 A G 16: 5,064,614 D313G probably damaging Het
Ugt1a10 C T 1: 88,215,123 P113L probably damaging Het
Ugt1a10 C T 1: 88,218,249 P473L probably damaging Het
Other mutations in Top2b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00430:Top2b APN 14 16422692 missense probably benign 0.00
IGL00730:Top2b APN 14 16389831 missense probably damaging 1.00
IGL00917:Top2b APN 14 16407354 missense probably benign 0.05
IGL01959:Top2b APN 14 16422695 missense probably benign 0.19
IGL02019:Top2b APN 14 16409965 missense probably benign 0.44
IGL02119:Top2b APN 14 16406733 missense probably damaging 1.00
IGL02136:Top2b APN 14 16407103 unclassified probably benign
IGL02148:Top2b APN 14 16400488 missense probably damaging 1.00
IGL02496:Top2b APN 14 16387335 missense probably benign
IGL02503:Top2b APN 14 16407163 missense possibly damaging 0.92
IGL02672:Top2b APN 14 16409166 unclassified probably benign
IGL02721:Top2b APN 14 16409236 missense probably damaging 1.00
IGL02886:Top2b APN 14 16365688 missense possibly damaging 0.73
IGL03252:Top2b APN 14 16393163 missense possibly damaging 0.60
PIT4434001:Top2b UTSW 14 16423780 critical splice donor site probably null
R0092:Top2b UTSW 14 16409263 missense probably damaging 1.00
R0390:Top2b UTSW 14 16418442 missense probably benign 0.00
R0394:Top2b UTSW 14 16413556 splice site probably null
R1159:Top2b UTSW 14 16430329 missense possibly damaging 0.81
R1424:Top2b UTSW 14 16383177 missense probably damaging 1.00
R1519:Top2b UTSW 14 16408953 splice site probably null
R1561:Top2b UTSW 14 16398993 missense possibly damaging 0.80
R1713:Top2b UTSW 14 16409823 missense probably benign 0.05
R1987:Top2b UTSW 14 16398916 missense probably damaging 0.99
R2219:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2287:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2422:Top2b UTSW 14 16409189 missense probably damaging 1.00
R2679:Top2b UTSW 14 16413947 missense probably damaging 1.00
R3687:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3707:Top2b UTSW 14 16388447 missense probably damaging 1.00
R3810:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3812:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3815:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3816:Top2b UTSW 14 16409189 missense probably damaging 1.00
R3818:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4023:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4025:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4026:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4133:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4157:Top2b UTSW 14 16384491 missense probably benign 0.42
R4179:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4180:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4300:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4376:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4377:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4492:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4549:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4550:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4581:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4582:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4628:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4630:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4667:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4668:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4669:Top2b UTSW 14 16409189 missense probably damaging 1.00
R4698:Top2b UTSW 14 16387331 nonsense probably null
R4769:Top2b UTSW 14 16398991 missense probably damaging 1.00
R4809:Top2b UTSW 14 16383125 missense probably benign 0.06
R4899:Top2b UTSW 14 16387313 missense probably damaging 1.00
R5035:Top2b UTSW 14 16409966 missense probably benign 0.01
R5621:Top2b UTSW 14 16387280 missense probably damaging 1.00
R5631:Top2b UTSW 14 16409882 missense probably damaging 1.00
R5685:Top2b UTSW 14 16413666 missense probably damaging 1.00
R5732:Top2b UTSW 14 16400106 missense possibly damaging 0.92
R5939:Top2b UTSW 14 16422786 missense probably damaging 0.96
R6007:Top2b UTSW 14 16423779 critical splice donor site probably null
R6087:Top2b UTSW 14 16409864 missense probably benign 0.14
R6144:Top2b UTSW 14 16423740 missense possibly damaging 0.48
R6196:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6218:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6229:Top2b UTSW 14 16409838 missense probably damaging 1.00
R6249:Top2b UTSW 14 16399006 missense probably damaging 1.00
R6337:Top2b UTSW 14 16399026 missense possibly damaging 0.77
R6353:Top2b UTSW 14 16416671 missense probably damaging 1.00
R6512:Top2b UTSW 14 16409854 missense possibly damaging 0.94
R6573:Top2b UTSW 14 16398991 missense probably damaging 1.00
R6614:Top2b UTSW 14 16407142 nonsense probably null
R6844:Top2b UTSW 14 16429383 missense possibly damaging 0.94
R6848:Top2b UTSW 14 16409958 missense possibly damaging 0.89
R6871:Top2b UTSW 14 16409189 missense probably damaging 1.00
R6895:Top2b UTSW 14 16413604 missense probably benign 0.06
R7162:Top2b UTSW 14 16416653 missense probably benign 0.00
R7247:Top2b UTSW 14 16416962 missense probably benign 0.08
R7250:Top2b UTSW 14 16420411 missense probably benign
R7359:Top2b UTSW 14 16407376 missense probably null 1.00
R7365:Top2b UTSW 14 16416649 missense probably benign 0.04
R7493:Top2b UTSW 14 16416605 missense probably benign 0.00
R7528:Top2b UTSW 14 16395427 nonsense probably null
R7562:Top2b UTSW 14 16412946 missense probably benign 0.04
R7594:Top2b UTSW 14 16428587 missense probably benign
R7670:Top2b UTSW 14 16416620 missense possibly damaging 0.61
R7894:Top2b UTSW 14 16413081 missense possibly damaging 0.68
R8031:Top2b UTSW 14 16412986 missense probably damaging 0.98
R8150:Top2b UTSW 14 16393291 missense probably damaging 0.99
R8214:Top2b UTSW 14 16383177 missense probably damaging 1.00
R8299:Top2b UTSW 14 16386123 missense possibly damaging 0.68
X0028:Top2b UTSW 14 16384499 nonsense probably null
Z1176:Top2b UTSW 14 16395434 missense probably damaging 1.00
Z1177:Top2b UTSW 14 16416953 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 On2013-04-16