Institute of Biomedical Chemistry, 10/8 Pogodinskaya Str., Moscow, Russia.|Institute of Biomedical Chemistry, 10/8 Pogodinskaya Str., Moscow, Russia.|Institute of Biomedical Chemistry, 10/8 Pogodinskaya Str., Moscow, Russia.|Institute of Biomedical Chemistry, 10/8 Pogodinskaya Str., Moscow, Russia.|Institute of Biomedical Chemistry, 10/8 Pogodinskaya Str., Moscow, Russia.|Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland, United States.