ID 5.1.3.26 DE N-acetyl-alpha-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol DE 4-epimerase. AN GlcNAc-P-P-Und 4-epimerase. CA N-acetyl-alpha-D-glucosaminyl-di-trans,octa-cis-undecaprenyl diphosphate CA = N-acetyl-alpha-D-galactosaminyl-di-trans,octa-cis-undecaprenyl CA diphosphate. CC -!- The enzyme is involved in biosynthesis of the repeating CC tetrasaccharide unit of the O-antigen produced by some Gram-negative CC bacteria. DR Q8X7P7, GNU_ECO57 ; //