Structural and Kinetic Analysis of Substrate Binding to the Sialyltransferase Cst-II from Campylobacter jejuni

Background: The transfer of sialic acids is catalyzed by a set of sialyltransferases with defined specificities. Results: We solved the ternary complex of the sialyltransferase Cst-II and kinetically characterized its mechanism. Conclusion: Our analysis gives insights into the acceptor specificity and proposes the iso-ordered Bi Bi mechanism. Significance: This work improves our understanding of sialyltransferase structure/function.