1. Department
of Chemistry and Chemical Biology, The University of New Mexico, MSC03
2060, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
2. Institute
of Biochemistry and Biology, Department of Molecular Enzymology, University of Potsdam, Karl-Liebknecht Strasse 24−25, 14476 Potsdam, Germany