2.4.1.280 N,N'-diacetylchitobiose phosphorylase chitin derivatives degradation - - PWY-6906 2.7.1.8 glucosamine kinase chitin derivatives degradation - - PWY-6906 2.7.1.59 N-acetylglucosamine kinase chitin derivatives degradation - - PWY-6906 3.5.1.25 N-acetylglucosamine-6-phosphate deacetylase chitin derivatives degradation - - PWY-6906 3.5.99.6 glucosamine-6-phosphate deaminase chitin derivatives degradation - - PWY-6906 5.4.2.3 phosphoacetylglucosamine mutase chitin derivatives degradation - - PWY-6906