Tag Archives: nucleotide bases

Interaction of DNA nucleotide bases with anticancer drug ThioTEPA: molecular docking and quantum-mechanical analysis

A. I. Samtsevich1, L. A. Bulavin1, L. F. Sukhodub2, T. Yu. Nikolaienko1

1Taras Shevchenko Kyiv National University, Ukraine;
2Sumy State University, Ministry of Education and Science of Ukraine;
e-mail: samtsevichartem@gmail.com;
tim_mail@ukr.net

Using modern methods of molecular docking­, quantum chemistry and quantum theory of atoms­ in molecules the interaction of anticancer drug ThioTEPA­ with isolated nucleotide bases and deoxy­ribonucleosidemonophosphates of DNA has been studied. Physical properties and some trends of binding­ have been established for the complexes of “nucleotide base + ThioTEPA” and “deoxyribonucleosidemonophosphate + ThioTEPA” types. It has been shown that strong hydrogen bonds of NH•••N type are the key factor responsible for high selectivi­ty of binding of ThioTEPA to the guanine-containing­ units of the DNA.