1. School of Chemistry and Chemical Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, People’s Republic of China, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong, People’s Republic of China, and BIOTEC Central Research Center, National Center for Genetic Engineering and Biotechnology, NASDA, 113 Phalonyithinn Road, Khlong 1, Khlong Luang, Pathum Thani 12120, Thailand