Tao Wang, Zhenhua Chen, Qiuxiang Cheng, Min Zhou, Xinli Tian, Pengfei Xie, Li Zhong, Meijuan Shen and Zhongjun Qin*
* Corresponding author: Zhongjun Qin qin@sibs.ac.cn
BMC Microbiology 2012, 12:253 doi:10.1186/1471-2180-12-253