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]
Overall distribution
Tissue specific distribution
Overall distribution
Tissue specific distribution
Gscore (Amp):
0.00
Gscore (Del):
0.18
Recurrently deleted in 1 cancer type(s)
Overall distribution
Tissue specific distribution
Mscore:
0.07
Recurrently mutated in 2 cancer type(s)
Overall
Tissue specific
Total fusion occurrence:
3
Fusions detected in 3 cancer type(s)
Overall
Tissue specific
Functional class:
Enzyme
JensenLab PubMed score:
253.47 (Percentile rank: 84.27%)
PubTator score:
203.15 (Percentile rank: 86.07%)
Target development/druggability level:
TchemThese targets have activities in ChEMBL or DrugCentral that satisfy the activity thresholds detailed below.
Tractability (small molecule):
Clinical PrecedenceTargets with drugs in phase II or above; Pre-clinical targets
