Nair, Anesh; Korres, Haralambos; Verma, Naresh K.
BACKGROUND The three bacteriophage genes gtrA, gtrB and gtr((type)) are responsible for O-antigen glucosylation in Shigella flexneri. Both gtrA and gtrB have been demonstrated to be highly conserved and interchangeable among serotypes while gtr((type)) was found to be specific to each serotype, leading to the hypothesis that the Gtr((type)) proteins are responsible for attaching glucosyl groups to the O-antigen in a site- and serotype- specific manner. Based on the confirmed topologies of GtrI,...[Show more]
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