TRANSFERASES OF O-ANTIGEN BIOSYNTHESIS IN SALMONELLA-ENTERICA - DIDEOXYHEXOSYLTRANSFERASES OF GROUP-B AND GROUP-C2 AND ACETYLTRANSFERASE OFGROUP-C2

The O antigen is a polymer of oligosaccharide units. O antigens differ in their sugar composition and glycosidic linkages, and genes respons ible for O-antigen-specific biosynthesis are grouped in the rfb gene c luster, In this study, we identified two abequosyltransferase genes an d an acetyltransferase gene in Salmonella enterica groups B and C2 by in vitro assay and identified paratosyl-, tyvelosyl-, and abequosyltra nsferase genes from S, enterica groups A and D and Yersinia pseudotube rculosis serovar IIA, respectively, by comparison.