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Structure of the divergent nagE-nagBACD operon and function of the encoding genes. GlcNAc enters the cell mostly by the nagE-encoded PTS transporter and is metabolized by the nagA- and nagB-encoded enzymes to fructose-6P. Expression of the genes nagE, nagA, and nagB is repressed by the NagC repressor. GlcN is transported by the manXYZ-encoded PTS transporter and requires just the nagB-encoded GlcN6P deaminase to be converted to Fru6P.
