1. Univ. Grenoble Alpes, CEACNRS, Institute for Structural Biology (IBS) 71 avenue des martyrs 38044 Grenoble France
2. Departamento de BioquimicaFaculdade de Medicina da Universidade do Porto Porto Portugal
3. Max Planck Institute for Developmental Biology Spemannstrasse 35 72076 Tübingen Germany
4. Department of Biophysics IUniversity of Regensburg 93053 Regensburg Germany