1. Departamento de Bioquímica y Biología Molecular; Universidad de Córdoba; Córdoba; Spain
2. Departamento de Microbiología; Universidad de Córdoba; Córdoba; Spain
3. Department of Biology; Biotechnical Faculty; University of Ljubljana; Ljubljana; Slovenia
4. Department of Membrane Transport; Institute of Physiology, v.v.i.; Academy of Sciences; Prague; Czech Republic