The attachement of carbohydrate to the protein by cotranslational or posttranslational modification is known as glycosylation. Earliar it is believed that glycosylation is only occur in eucaryotics, but later it is discoverd in bacteria also. In bacteria most glycoproteins are associated with virulence factors of medically significant pathogens.So the bacterial glycosylation will become new targets for therapeutic purposes.

