Affiliation: | (1) Department of Biochemistry and Molecular Biology, Vrije Universiteit, Amsterdam, The Netherlands;(2) Department of Microbiology, Vrije Universiteit, Amsterdam, The Netherlands;(3) Laboratory of Molecular Cell Biology, Katholieke Universiteit Leuven, Leuven-Heverlee, Belgium;(4) Present address: Vakgroep Biochemie en Moleculaire Biologie, Faculteit Scheikunde, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands |