1. Tianjin Key Laboratory for Microbial Functional Genomics, Nankai University, 23 HongDa Street, TEDA, Tianjin 300457, P. R. China
2. TEDA School of Biological Sciences and Biotechnology, Nankai University, 23 HongDa Street, TEDA, Tianjin 300457, P. R. China
3. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
4. College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
5. School of Molecular and Microbial Biosciences (G08), University of Sydney, Sydney, NSW 2006, Australia