Proteolytic Degradation of Topoisomerase II (Top2) Enables the Processing of Top2DNA and Top2RNA Covalent Complexes by Tyrosyl-DNA-Phosphodiesterase 2 (TDP2).
Gao, R., Schellenberg, M.J., Huang, S.Y., Abdelmalak, M., Marchand, C., Nitiss, K.C., Nitiss, J.L., Williams, R.S., Pommier, Y.(2014) J Biol Chem 289: 17960-17969
- PubMed: 24808172 
- DOI: 10.1074/jbc.M114.565374
- Primary Citation of Related Structures:  
4PUQ - PubMed Abstract: 
Eukaryotic type II topoisomerases (Top2α and Top2β) are homodimeric enzymes; they are essential for altering DNA topology by the formation of normally transient double strand DNA cleavage. Anticancer drugs (etoposide, doxorubicin, and mitoxantrone) and also Top2 oxidation and DNA helical alterations cause potentially irreversible Top2·DNA cleavage complexes (Top2cc), leading to Top2-linked DNA breaks ...