1. Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, 45110 Ioannina, Greece
2. Laboratory of Biological Chemistry, Department of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
3. School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
4. Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
5. Institute of Biochemistry, ETH Zurich, Switzerland
6. MRC-Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK