1. Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun 130012, P. R. China
2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
3. Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, P. R. China