After several years of serving the research community, our ActiveDriverDB database will be retired on May 1st 2026. Please make sure to download any data you need and update your links or workflows before that date.
We want to sincerely thank all our users for their support, feedback, and collaboration over the years — your contributions have been invaluable to this project. A special thank you to Dr. Michal Krassowski for leading the development of our open-source software and database.
For any questions or assistance, please contact Jüri Reimand (juri.reimand@utoronto.ca).
TOP3A (NM_004618) - DNA topoisomerase III alpha
Dna Topoisomerase 3-Alpha Isoform 1
Legend
Protein
Kinases
Sites
Color corresponds to (the most severe) impact of mutations on given site:
Interactions
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PTM Interaction Network Visualisation
Protein summary
This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This enzyme catalyzes the transient breaking and rejoining of a single strand of DNA which allows the strands to pass through one another, thus reducing the number of supercoils and altering the topology of DNA. This enzyme forms a complex with BLM which functions in the regulation of recombination in somatic cells. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2016].
- Strand
- -
- Chromosome
- 17
- Protein
- 1001 residues
- All mutations
- 161
- PTM sites
- 23
- CDS
- 18,178,115 - 18,218,092
- Transcription
- 18,177,234 - 18,218,321
Usage summary
Network
PTM site
Kinases group
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Kinase, PTM site or protein
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External references
- Entrez
- gene: 7156
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UniProt