1. Institute of Biochemistry. University of Kiel, Olshausenstraßie 40, 2300 Kiel, Germany
2. Department of Physical Chemistry, Escuela Universitaria Politecnica de Albacete, University of Castilla-La Mancha, Carretera de las Penas km 3,200, 02006 Albacete, Spain
3. Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Murcia, 30100 Espinardo, Murcia, Spain