Bommer, Martin [P:(DE-H253)PIP1019448] ; Kunze, C. [P:(DE-HGF)0] ; Fesseler, J. [P:(DE-H253)PIP1020617] ; Schubert, T. [P:(DE-HGF)0] ; Diekert, G. [P:(DE-HGF)0] ; Dobbek, H. [P:(DE-HGF)0]