[1] Graz Univ, Inst Mol Biosci, Graz, Austria
[2] Graz Univ Technol, Inst Biochem, A-8010 Graz, Austria
[3] Med Univ Graz, Inst Pathol, Graz, Austria
[4] Univ Bayreuth, Inst Cell Biol, Bayreuth, Germany
[5] Univ Rome, Dept Biol & Biotechnol, Rome, Italy
[6] Katholieke Univ Leuven, Lab Funct Biol, B-3001 Heverlee, Belgium
[7] Univ Kent, Sch Biosci, Canterbury, Kent, England