1. The Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, SE-106 91 Stockholm, Sweden
2. The Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992, Moscow, Russian Federation
3. Present address: Buck Institute for research on aging, Novato, CA 94945, USA
4. Institute of Mitoengineering, Moscow State University, 119992, Moscow, Russian Federation