JT0160 cells as an enzyme source, enzymatic syntheses were performed with mono- and di-saccharides as the sialyl acceptors. It was clarified that a crude extract of P. damsela JT0160 cells can be used as an synthetic catalyst for the enzymaticsynthesis of sialyloligosaccharides. Furthermore, the enzyme assay showed that sialyltransferase 0160 could transfer NeuAc to not only N-linked but also O-linked