1. Tsinghua-Peking Center for Life Sciences Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Center for Synthetic and Systems Biology Department of Chemistry Tsinghua University Beijing 100084 China
2. School of Food and Biological Engineering Engineering Research Center of Bio-process Ministry of Education Hefei University of Technology Hefei 230009 China
3. MOE Key Laboratory of Bioinformatics School of Life Sciences Tsinghua University Beijing 100084 China