1. CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST); Beijing 100190 P. R. China
2. University of Chinese Academy of Sciences; Beijing 100049 P. R. China
3. Bioinformatics Division and Center for Synthetic and Systems Biology; TNLIST; Department of Automation; Tsinghua University; Beijing 100084 P. R. China
4. College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Road Zhengzhou 450001 P. R. China