1. Department of Biochemistry and Molecular Biology, Universitat de València, Burjassot, Spain
2. Institut Universitari de Biotecnologia i Biomedicina, Universitat de València, Burjassot, Spain
3. Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
4. Max Planck Institute of Biochemistry, Martinsried, Germany