33. Yu, H.; Chokhawala, H.; Huang, S.; *Chen X.
One-pot three-enzyme chemoenzymatic approach to the synthesis of sialosides containing natural and non-natural functionalities. 
Nature Protocols
 20061, 2485-2492. [Abstract]

32. Yu, H.; Huang, S.; Chokhawala, H.; Sun, M.; Zheng, H.; *Chen, X. 
Highly efficient chemoenzymatic synthesis of naturally occurring and non-natural alpha2,6-linked sialosides: A P. damsela alpha2,6-sialyltransferase with extremely flexible donor substrate specificity. 
Angew. Chem. Int. Ed. 
200645, 3938-3944. [Supporting information]

31. Yu, H.; *Chen, X. 
Aldolase catalyzed synthesis of beta-D-Gal -(1-9)-D-KDN: A novel acceptor for sialyltransferases. 
Org. Lett. 
20068, 2393-2396. [Supporting information]

30. Ni, L., Sun, M., Yu, H., Chokhawala, H., *Chen, X, and *Fisher, A. J.
CMP-Induced Strctural Changes in a Multifunctional Sialyltransferase from Pasteurella multocida . 
Biochemistry 2006
45, 2139-2148.

29. Yu H.;Ryan, W.; Yu, H.; * Chen, X. 
Characterization of a bifunctional cytidine 5′-monophosphate -acetylneuramic acid synthestase cloned from Streptococcus agalactiae.
Biotech. Lett
200628, 107-113.