[1] NCI, Frederick Canc Res & Dev Ctr, ABL Basic Res Program, Frederick, MD 21702 USA
[2] NCI, Frederick Canc Res & Dev Ctr, SAIC Frederick, Intramural Res Support Program, Frederick, MD 21702 USA
[3] NCI, Frederick Canc Res & Dev Ctr, Mol Immunoregulat Lab, Div Basic Sci, Frederick, MD 21702 USA
[4] Russian Acad Sci, Engelhardt Inst Mol Biol, Moscow 119899, Russia
[5] Moscow MV Lomonosov State Univ, Belozersky Inst Phys Chem Biol, Moscow 119899, Russia