1. Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationSchool of BiotechnologyJiangnan University Wuxi 214122 P. R. China
2. Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Biliary‐Pancreat SurgerySun Yat‐sen Memorial HospitalSun Yat‐sen University Guangzhou 510120 P. R. China
3. Wuxi School of MedicineJiangnan University Lihu Avenue 1800 Wuxi 214122 P. R. China
4. Department of Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Potsdam 14476 Germany