Incidental Mutation 'R7250:Top2b'
ID563871
Institutional Source Beutler Lab
Gene Symbol Top2b
Ensembl Gene ENSMUSG00000017485
Gene Nametopoisomerase (DNA) II beta
SynonymsD230016L12Rik, Top-2
MMRRC Submission
Accession Numbers
Is this an essential gene? Probably essential (E-score: 0.905) question?
Stock #R7250 (G1)
Quality Score225.009
Status Not validated
Chromosome14
Chromosomal Location16365179-16435462 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) C to T at 16420411 bp
ZygosityHeterozygous
Amino Acid Change Threonine to Isoleucine at position 1274 (T1274I)
Ref Sequence ENSEMBL: ENSMUSP00000017629 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000017629] [ENSMUST00000161693]
Predicted Effect probably benign
Transcript: ENSMUST00000017629
AA Change: T1274I

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000017629
Gene: ENSMUSG00000017485
AA Change: T1274I

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 probably benign
Transcript: ENSMUST00000160501
SMART Domains Protein: ENSMUSP00000124889
Gene: ENSMUSG00000017485

DomainStartEndE-ValueType
TOP4c 2 222 3.97e-12 SMART
Predicted Effect unknown
Transcript: ENSMUST00000161693
AA Change: T148I
SMART Domains Protein: ENSMUSP00000123992
Gene: ENSMUSG00000017485
AA Change: T148I

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
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: 102 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930480E11Rik G T X: 78,370,705 M345I probably benign Het
Actl7b T A 4: 56,741,035 M108L probably benign Het
Adgrf3 T A 5: 30,195,682 I934L probably damaging Het
Adprm A G 11: 67,041,624 V153A probably benign Het
Aif1l G A 2: 31,969,752 V109M probably damaging Het
Asphd1 T A 7: 126,946,770 E307V probably damaging Het
Ate1 T A 7: 130,519,971 probably benign Het
BC048403 T C 10: 121,745,471 S126P possibly damaging Het
BC067074 T G 13: 113,318,815 I465R Het
Borcs7 A G 19: 46,699,608 H64R probably damaging Het
C1qtnf1 A G 11: 118,448,350 *282W probably null Het
Cacna1c A G 6: 118,598,005 C1985R Het
Cacna1c A T 6: 118,696,451 V647E Het
Cacna1d A G 14: 30,075,151 S1497P probably damaging Het
Cacna1e T A 1: 154,700,489 I133F possibly damaging Het
Ccdc63 A T 5: 122,122,843 L206H probably damaging Het
Ccdc84 A G 9: 44,412,451 probably null Het
D430041D05Rik T C 2: 104,256,616 T672A possibly damaging Het
D630045J12Rik G T 6: 38,142,611 T1732K possibly damaging Het
D930020B18Rik T C 10: 121,671,831 I158T probably damaging Het
Ddx52 G A 11: 83,944,566 G106D probably benign Het
Dock2 A G 11: 34,695,205 V550A probably benign Het
Dock2 C T 11: 34,695,293 D521N probably damaging Het
F13b T C 1: 139,516,489 probably null Het
Fchsd2 A G 7: 101,259,685 K431R possibly damaging Het
Fez1 C T 9: 36,867,794 R256C probably damaging Het
Gjd4 T A 18: 9,280,391 Q229L probably benign Het
Gpr45 T A 1: 43,032,371 I58N probably damaging Het
Gstm1 T A 3: 108,016,393 I99F probably damaging Het
Gtpbp8 T A 16: 44,743,862 T149S probably damaging Het
H2-Ab1 A G 17: 34,267,507 D180G probably damaging Het
Hdhd5 A G 6: 120,517,055 I188T possibly damaging Het
Hfm1 T C 5: 106,904,331 I300V probably benign Het
Hnrnpr T G 4: 136,332,435 D283E probably benign Het
Hsp90b1 T C 10: 86,691,708 E768G unknown Het
Kcna4 C A 2: 107,296,318 Q466K possibly damaging Het
Kcnk6 A G 7: 29,232,194 L97P probably benign Het
Kdelc2 C T 9: 53,390,521 Q158* probably null Het
Klf5 A G 14: 99,299,019 S9G probably benign Het
Kmt2c C A 5: 25,299,491 K3606N probably damaging Het
Kmt2c T C 5: 25,309,807 T3013A probably benign Het
Lancl1 A G 1: 67,009,299 Y207H possibly damaging Het
Lipe G C 7: 25,388,660 probably benign Het
Lrrc66 T A 5: 73,610,881 H239L probably benign Het
Ltbp2 C T 12: 84,787,392 W1441* probably null Het
Man2a1 T C 17: 64,636,588 S213P probably benign Het
Mapre2 C T 18: 23,858,062 A171V possibly damaging Het
Mdn1 T A 4: 32,695,427 D1155E probably damaging Het
Mki67 T C 7: 135,699,324 D1327G possibly damaging Het
Mx2 T C 16: 97,547,464 I279T probably damaging Het
Myo5c A G 9: 75,262,215 T441A probably damaging Het
Nlrp9a T G 7: 26,558,718 V587G possibly damaging Het
Npas2 A T 1: 39,338,107 T517S probably damaging Het
Npy1r T C 8: 66,705,060 S341P probably benign Het
Ntm A G 9: 29,411,692 W11R probably benign Het
Nxpe2 A T 9: 48,326,796 I53N possibly damaging Het
Olfr456 A G 6: 42,486,755 V146A probably benign Het
Olfr655 A T 7: 104,596,531 Y217N probably damaging Het
Olfr981 T A 9: 40,022,754 Y120* probably null Het
Onecut2 T C 18: 64,386,440 F443L probably benign Het
Parp2 T A 14: 50,817,344 V248E probably benign Het
Pcdh12 C A 18: 38,281,976 V699L probably benign Het
Pja2 G A 17: 64,309,456 P148L probably benign Het
Ppip5k2 T G 1: 97,745,462 D415A probably benign Het
Prss47 A G 13: 65,052,541 S74P probably benign Het
Ptprg G T 14: 12,166,767 M723I probably benign Het
Qsox2 A T 2: 26,228,432 I109N probably damaging Het
Ranbp3l A G 15: 9,011,980 E217G probably benign Het
Rgl2 C T 17: 33,933,429 R367W probably damaging Het
Rgs12 T A 5: 34,965,497 F208Y probably damaging Het
Rin3 C T 12: 102,368,634 T268I unknown Het
Rttn T A 18: 88,989,523 D427E probably benign Het
Samd13 G A 3: 146,646,324 P91S probably benign Het
Samd9l T C 6: 3,374,201 D1020G possibly damaging Het
Sec62 T G 3: 30,812,347 L201V possibly damaging Het
Setdb1 C T 3: 95,354,541 probably null Het
Sf3a3 A T 4: 124,722,915 T197S probably benign Het
Slc20a1 A T 2: 129,209,924 I618F possibly damaging Het
Slc38a3 A T 9: 107,656,666 M186K probably benign Het
Slc39a13 T C 2: 91,063,158 T319A probably benign Het
Slc44a4 T C 17: 34,918,544 probably null Het
St3gal1 A C 15: 67,106,729 D314E possibly damaging Het
Suclg1 A G 6: 73,271,091 N265S probably benign Het
Sult2b1 A T 7: 45,783,937 V2D unknown Het
Supv3l1 T A 10: 62,445,067 I182F probably damaging Het
Tcp11l2 T C 10: 84,587,241 probably null Het
Tenm2 C A 11: 36,072,798 L935F probably damaging Het
Tnks T A 8: 34,851,758 I790F probably damaging Het
Tpi1 A T 6: 124,812,478 I178N probably damaging Het
Trav9d-1 A T 14: 52,792,696 S86C probably damaging Het
Treml2 A G 17: 48,309,127 E265G probably benign Het
Trpm7 A T 2: 126,826,765 S744T possibly damaging Het
Usp33 T A 3: 152,392,362 L909* probably null Het
Vcan A G 13: 89,721,686 I210T probably damaging Het
Vcan A T 13: 89,731,457 probably null Het
Vsig10l A T 7: 43,463,675 D17V probably benign Het
Zbtb7b T A 3: 89,379,669 T498S probably benign Het
Zfp366 T A 13: 99,229,568 H412Q probably damaging Het
Zfp53 C A 17: 21,509,578 D624E probably damaging Het
Zfp827 A T 8: 79,190,092 D432V Het
Zic1 T C 9: 91,364,975 T15A probably damaging Het
Zswim8 T C 14: 20,719,968 C1368R 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
R0201:Top2b UTSW 14 16383174 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
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
X0028:Top2b UTSW 14 16384499 nonsense probably null
Predicted Primers PCR Primer
(F):5'- TTTGCTAACCAAGATCCTGGC -3'
(R):5'- GTGAAGCTGTTCTATGAAAGGTTC -3'

Sequencing Primer
(F):5'- CCAAGATCCTGGCTTATTCTTTAAGG -3'
(R):5'- GTAGACTCTAAACGTGCC -3'
Posted On2019-06-26