[1] Max Planck Inst Biochem, Abt Strukturforsch, D-52152 Martinsried, Germany
[2] Res Inst Mol Pathol, A-1030 Vienna, Austria
[3] Univ Halle Wittenberg, Inst Biotechnol, D-06120 Halle, Saale, Germany
[4] Univ Hohenheim, Inst Plant Physiol & Biotechnol 260, D-70593 Stuttgart, Germany
[5] Altana Pharma AG, D-78467 Constance, Germany
[6] Graz Univ, Inst Biochem, A-8010 Graz, Austria