A Multifunctional <i>Pasteurella multocida</i> Sialyltransferase: A Powerful Tool for the Synthesis of Sialoside Libraries
作者:Hai Yu、Harshal Chokhawala、Rebekah Karpel、Hui Yu、Bingyuan Wu、Jianbo Zhang、Yingxin Zhang、Qiang Jia、Xi Chen
DOI:10.1021/ja0561690
日期:2005.12.1
A multifunctional sialyltransferase has been cloned from Pasteurella multocida strain P-1059 and expressed in E. coli as a truncated C-terminal His6-tagged recombinant protein (tPm0188Ph). Biochemical studies indicate that the obtained protein is (1) an alpha2,3-sialyltransferase (main function), (2) an alpha2,6-sialyltransferase, (3) an alpha2,3-sialidase, and (4) an alpha2,3-trans-sialidase. The recombinant tPm0188Ph is a powerful tool in the synthesis of structurally diverse sialoside libraries due to its relaxed substrate specificity, high solubility, high expression level, and multifunctionality.