1. Unit for Structural Biochemistry, Department of Chemistry, Philipps University Marburg, Hans-Meerwein Straße 4, 35032 Marburg, Germany
2. Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University, Am Planetarium 1, 07743 Jena, Germany
3. Institute of Biological Chemistry, Academia Sinica, 128 Academia Rd. Sec. 2, Taipei 115, Taiwan
4. Division of Chemistry, Graduate School of Engineering Science, Osaka University, 1–3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
5. LOEWE Center of Synthetic Microbiology, Philipps University Marburg, Hans-Meerwein Straße 4, 35032 Marburg, Germany