1. Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371
2. Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education; School of Biotechnology; Jiangnan University; Lihu Avenue 1800 Wuxi China 214122
3. School of Biological Sciences; Nanyang Technological University; 60 Nanyang Drive Singapore 637551
4. Institute of Molecular and Cell Biology, A*STAR; 61 Biopolis Drive Singapore 138673
5. School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798