The carbohydrate structure of the membrane glycoprotein of vesicular stomatitis virus (New Jersey serotype) has been determined on material purified from virions grown in spinner cultures of BHKzl cells in the presence of [3H]glucosamine. The intact 3H-glycoprotein contains 6 residues of N-acetyl-n-neuraminic acid, 6 of D-galactose, 6 of D-mannose, 2 of L-fucose, and 10 of N-acetyl-n-glucosamin...

A chemoenzymatic synthesis of sialic acid from inexpensive N-acetyl-D-glucosamine is described. In a three-step Wittig-protection-ozonolysis strategy manno-configured aldehydes are obtained. Treatment with oxaloacetate in the presence of macrophomate synthase affords the signature α-keto-γ-hydroxy acid moiety with high diastereoselectivity.

The biopolymer is characterized as either chitin or chitosan according to the degree of deacetylation (DD) which is determined by the proportion of D-glucosamine and N-acetylD-glucosamine. Structurally, chitosan is a straight-chain copolymer composed of D-glucosamine and N-acetyl-D-glucosamine being obtained by the partial deacetylation of chitin. Chitosan is the most abundant basic biopolymer ...

ABSTRACT Chitin and its derivatives have valuable potential applications in various fields that include medicine, agriculture, food industries. Paenibacillus sp. str. FPU-7 is one of the most potent chitin-degrading bacteria identified. This review introduces chitin degradation system P. FPU-7. In addition to extracellular chitinases, uses a unique multimodular chitinase (ChiW) hydrolyze oligos...

The novel glycosphingolipid, β-D-GalNAcp(1-->4)[α-D-Fucp(1-->3)]-β-D-GlcNAcp(1-->)Cer (A), isolated from the marine sponge Aplysinella rhax has a unique structure, with D-fucose and N-acetyl-D-galactosamine moieties attached to a reducing-end N-acetyl-D-glucosamine through an α1-->3 and β1-->4 linkage, respectively. We synthesized glycolipid 1 and some non-natural di- and trisaccharide analogue...

BACKGROUND N-acetyl-β-d-glucosamine (GlcNAc)6 is extensively used as an important bio-agent and a functional food additive. The traditional chemical process for GlcNAc production has some problems such as high production cost, low yield, and acidic pollution. Therefore, to discover a novel chitinase that is suitable for bioconversion of chitin to GlcNAc would be of great value. RESULTS Here, ...