1. Gamaleya Research Centre for Epidemiology and Microbiology, Moscow 123098, Russia
2. Institute of Protein Research, Russian Academy of Sciences, Pushchino 142290, Russia
3. Department of Infectious Diseases, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 2 Bolshaya Pirogovskaya St., Moscow 119435, Russia
4. Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino 142290, Russia