1. Shenzhen Key Laboratory of Smart Healthcare Engineering Guangdong Provincial Key Laboratory of Advanced Biomaterials Department of Biomedical Engineering Southern University of Science and Technology No 1088, Xueyuan Rd., Nanshan District Shenzhen Guangdong 518055 P. R. China
2. School of Chemistry Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
3. Institute of Antibiotics Huashan Hospital Fudan University Shanghai 200040 P. R. China
4. School of Food Science and Nutrition Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK