1. Key
Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin 300071, P.R. China
2. College
of Life Sciences, Nankai University, Tianjin 300071, P.R. China
3. Experiment and Test Institute, Xinjiang Oilfield Company, Karamay 834000, P.R. China
4. Research Institute
of Petroleum Exploration and Development, Langfang branch, CNPC, Langfang 065000, P.R. China