N-acetylglucosamine-6-phosphate deacetylase Three enzymes are required for N-acetylglucosamine (NAG) utilization in <taxon tax_id="562">Escherichia coli</taxon>: enzyme IInag (gene nagE), N-acetylglucosamine-6-phosphate deacetylase (gene nagA), and glucosamine-6-phosphate isomerase (gene nagB) [<cite idref="PUB00008243"/>]. This is family of N-acetylglucosamine-6-phosphate deacetylases, <db_xref db="EC" dbkey="3.5.1.25"/> [<cite idref="PUB00008244"/>].