Incidental Mutation 'IGL01456:Top2a'
ID84779
Institutional Source Australian Phenomics Network (link to record)
Gene Symbol Top2a
Ensembl Gene ENSMUSG00000020914
Gene Nametopoisomerase (DNA) II alpha
SynonymsTop-2, DNA Topoisomerase II alpha
Accession Numbers

Ncbi RefSeq: NM_011623.2; MGI:98790

Is this an essential gene? Probably essential (E-score: 0.970) question?
Stock #IGL01456
Quality Score
Status
Chromosome11
Chromosomal Location98992943-99024189 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to T at 99011030 bp
ZygosityHeterozygous
Amino Acid Change Leucine to Glutamine at position 458 (L458Q)
Ref Sequence ENSEMBL: ENSMUSP00000068896 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000068031]
Predicted Effect probably damaging
Transcript: ENSMUST00000068031
AA Change: L458Q

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000068896
Gene: ENSMUSG00000020914
AA Change: L458Q

DomainStartEndE-ValueType
low complexity region 10 21 N/A INTRINSIC
Blast:TOP2c 22 60 3e-12 BLAST
HATPase_c 75 224 1.81e-2 SMART
TOP2c 79 669 N/A SMART
TOP4c 692 1166 3.58e-234 SMART
low complexity region 1192 1202 N/A INTRINSIC
low complexity region 1226 1238 N/A INTRINSIC
low complexity region 1261 1273 N/A INTRINSIC
low complexity region 1291 1306 N/A INTRINSIC
low complexity region 1407 1418 N/A INTRINSIC
Pfam:DTHCT 1425 1518 1.1e-18 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000144318
Coding Region Coverage
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, alpha, is localized to chromosome 17 and the beta gene is localized to chromosome 3. 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. [provided by RefSeq, Jul 2010]
Allele List at MGI

All alleles(47) : Targeted(1) Gene trapped(46)

Other mutations in this stock
Total: 32 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adam6b T A 12: 113,491,463 D633E probably benign Het
Akap13 T C 7: 75,602,847 C242R probably damaging Het
Ap5z1 T C 5: 142,468,036 L175P probably damaging Het
Arid1b A G 17: 5,291,235 E938G probably damaging Het
Arid4a A G 12: 71,067,262 N208D probably benign Het
Atr A G 9: 95,950,565 H2556R possibly damaging Het
Cald1 A T 6: 34,764,996 D438V probably damaging Het
Dcbld2 C T 16: 58,408,873 P40S possibly damaging Het
Dock8 G A 19: 25,119,499 M590I possibly damaging Het
Gm1818 A T 12: 48,555,800 noncoding transcript Het
Hace1 A G 10: 45,709,998 probably benign Het
Igkv10-96 A G 6: 68,632,102 Y70H probably benign Het
Kdm2a G T 19: 4,351,755 H200Q probably damaging Het
Ldha A G 7: 46,850,178 D111G possibly damaging Het
Map7 A G 10: 20,273,804 E567G unknown Het
Nbeal1 G T 1: 60,230,628 L375F probably damaging Het
Nectin3 T C 16: 46,458,853 E254G probably benign Het
Nlrp4b A T 7: 10,714,223 I118F probably benign Het
Pkhd1 A T 1: 20,199,459 V3287D probably damaging Het
Ptpre T G 7: 135,669,802 V375G probably damaging Het
Rabgap1 A G 2: 37,541,175 E746G probably damaging Het
Sh2b2 C T 5: 136,224,467 C311Y probably damaging Het
Skor1 G A 9: 63,145,490 T399I probably damaging Het
Sptbn2 A G 19: 4,746,749 T1792A probably damaging Het
Tiparp G T 3: 65,552,609 G442* probably null Het
Tln1 G A 4: 43,543,432 probably benign Het
Tmc7 C A 7: 118,547,310 probably benign Het
Tpte A G 8: 22,345,052 probably benign Het
Unc13a G A 8: 71,644,567 R1228W probably damaging Het
Vipr1 C T 9: 121,665,178 T275M probably damaging Het
Vmn1r177 G T 7: 23,866,328 P41Q possibly damaging Het
Vmn2r4 A T 3: 64,406,395 N388K probably damaging Het
Other mutations in Top2a
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00518:Top2a APN 11 99018821 nonsense probably null
IGL01285:Top2a APN 11 99006159 splice site probably benign
IGL01445:Top2a APN 11 99011030 missense probably damaging 1.00
IGL01451:Top2a APN 11 99011030 missense probably damaging 1.00
IGL01458:Top2a APN 11 99011030 missense probably damaging 1.00
IGL01481:Top2a APN 11 99011030 missense probably damaging 1.00
IGL01485:Top2a APN 11 99011030 missense probably damaging 1.00
IGL01753:Top2a APN 11 99007274 missense probably damaging 0.97
IGL03029:Top2a APN 11 99018799 missense probably benign 0.03
PIT4581001:Top2a UTSW 11 99002964 missense probably damaging 0.97
PIT4585001:Top2a UTSW 11 99001373 missense probably benign 0.02
R0008:Top2a UTSW 11 99002903 nonsense probably null
R0047:Top2a UTSW 11 98997856 missense probably benign
R0047:Top2a UTSW 11 98997856 missense probably benign
R0070:Top2a UTSW 11 99015060 critical splice acceptor site probably null
R0070:Top2a UTSW 11 99015060 critical splice acceptor site probably null
R0116:Top2a UTSW 11 99003590 missense probably benign 0.00
R0245:Top2a UTSW 11 99010096 missense probably benign 0.37
R0276:Top2a UTSW 11 99009907 splice site probably benign
R0288:Top2a UTSW 11 99016423 splice site probably benign
R0335:Top2a UTSW 11 99022955 missense probably benign 0.08
R0422:Top2a UTSW 11 99009853 missense probably damaging 1.00
R0546:Top2a UTSW 11 98999226 missense possibly damaging 0.75
R0558:Top2a UTSW 11 98996839 missense probably benign
R0599:Top2a UTSW 11 99001417 missense probably damaging 0.99
R0727:Top2a UTSW 11 99012148 nonsense probably null
R1565:Top2a UTSW 11 99001054 missense probably damaging 0.99
R1674:Top2a UTSW 11 99009273 missense probably damaging 0.96
R1844:Top2a UTSW 11 99016069 missense probably benign 0.06
R1959:Top2a UTSW 11 98995977 splice site probably null
R2124:Top2a UTSW 11 99004228 missense probably benign 0.00
R2128:Top2a UTSW 11 99009807 missense probably damaging 0.97
R3707:Top2a UTSW 11 98996825 missense probably benign 0.13
R4110:Top2a UTSW 11 99022960 missense probably damaging 1.00
R4112:Top2a UTSW 11 99022960 missense probably damaging 1.00
R4423:Top2a UTSW 11 99001405 missense probably benign 0.00
R4425:Top2a UTSW 11 99001405 missense probably benign 0.00
R4914:Top2a UTSW 11 99002960 missense probably damaging 1.00
R4939:Top2a UTSW 11 99010092 missense probably damaging 1.00
R4944:Top2a UTSW 11 98997850 missense probably benign 0.37
R4971:Top2a UTSW 11 98993841 missense probably damaging 1.00
R5362:Top2a UTSW 11 99018912 missense probably damaging 1.00
R5477:Top2a UTSW 11 99016480 nonsense probably null
R5499:Top2a UTSW 11 99022376 missense probably benign 0.20
R5911:Top2a UTSW 11 99016465 missense possibly damaging 0.92
R7126:Top2a UTSW 11 99014992 missense probably benign 0.09
R7131:Top2a UTSW 11 99004182 missense possibly damaging 0.75
R7174:Top2a UTSW 11 99024096 start gained probably benign
R7329:Top2a UTSW 11 99004246 missense possibly damaging 0.57
R7560:Top2a UTSW 11 99000837 missense probably benign
R7563:Top2a UTSW 11 99016179 missense probably damaging 1.00
R7740:Top2a UTSW 11 98993814 missense probably benign 0.34
R7841:Top2a UTSW 11 99022350 missense probably damaging 1.00
R7894:Top2a UTSW 11 99009605 missense probably damaging 1.00
R8122:Top2a UTSW 11 98999167 missense probably benign
R8260:Top2a UTSW 11 99000769 missense probably null 0.87
R8504:Top2a UTSW 11 99014741 missense probably benign
R8550:Top2a UTSW 11 98995918 missense probably benign
R8558:Top2a UTSW 11 99021723 missense probably damaging 1.00
R8693:Top2a UTSW 11 99010042 missense probably damaging 1.00
R8851:Top2a UTSW 11 99009851 missense probably damaging 1.00
U24488:Top2a UTSW 11 99022426 missense probably damaging 1.00
X0025:Top2a UTSW 11 98995941 missense probably benign 0.32
Posted On2013-11-11