Probably a transglycosylase. Probably involved in synthesis of the outer membrane receptor for a cellular contact-dependent growth inhibition (CDI) system. Disruption confers resistance to cellular contact-dependent growth inhibition (CDI) CdiA-2 of B.pseudomallei strain 1026b, but not to endogenous CdiA. Alters lipopolysaccharide structure, decreased binding to B.pseudomallei strain 1026b inhibitor cells. Belongs to the glycosyltransferase group 1 family. Glycosyltransferase 4 subfamily.