1. State Key Laboratory of Microbial Technology; School of Life Sciences; Shandong University; Jinan 250100 China
2. Institute of High Energy Physics, Chinese Academy of Sciences; Beijing 100049 China
3. Shandong Institute of Parasitic Diseases, Shandong Academy of Medical Science; Jining 272033 China
4. State Key Laboratory of Microbial Metabolism; School of Life Sciences and Biotechnology, Shanghai Jiao Tong University; Shanghai 200240 China