Institution: | 1. Max F. Perutz Laboratories, Department of Microbiology and Immunobiology, University Departments at the Vienna Biocenter, Dr. Bohrgasse 9/4, 1030 Vienna, Austria;2. Max-Planck-Institut für Molekulare Genetik, AG Ribosomen, Ihnestrasse 73, D-14185 Berlin, Germany |