Sequential hydrolysis of hyaluronate by beta-glucuronidase and beta-N-acetylhexosaminidase. 1981

M O Longas, and K Meyer

1. Hyaluronate extracted from rooster comb was digested by a mixture of beta-N-acetylhexosaminidase and beta-glucuronidase with simultaneous dialysis for 96 h. 2. The produjct, yielding 99.6% of a mixture of mono- and oligo-saccharides, was purified by gel chromatography and analysed for glucuronic acid, N-acetylglucosamine and other sugars. 3. The oligosaccharide portion was chromatographed on DEAE-cellulose, and the effluent fractions were analysed for glucuronic acid and N-acetylglucosamine, reduced with NaBH4, digested by beta-N-acetylhexosaminidase and subjected to acid hydrolysis and glucosamine determination. 4. GlcNAc-GlcA-GlcNAc, GlcA-GlcA-GlcNAc and GlcA-GlcA-GlcA-GlcNAc were the oligosaccharides obtained, which resulted from the transferase activity of the enzymes and represented 57% of the digestion products. The results demonstrate that this hyaluronate is an unbranched polymer of approximatey equal amounts of glucuronic acid and N-acetylglucosamine. The data also indicate that if this glycosaminoglycan contains any of the neutral sugars for which it was analysed, their concentration must be less than 0.020% of the sum of the known components.

UI MeSH Term Description Entries
D008297 Male Males
D009844 Oligosaccharides Carbohydrates consisting of between two (DISACCHARIDES) and ten MONOSACCHARIDES connected by either an alpha- or beta-glycosidic link. They are found throughout nature in both the free and bound form. Oligosaccharide
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D002850 Chromatography, Gel Chromatography on non-ionic gels without regard to the mechanism of solute discrimination. Chromatography, Exclusion,Chromatography, Gel Permeation,Chromatography, Molecular Sieve,Gel Filtration,Gel Filtration Chromatography,Chromatography, Size Exclusion,Exclusion Chromatography,Gel Chromatography,Gel Permeation Chromatography,Molecular Sieve Chromatography,Chromatography, Gel Filtration,Exclusion Chromatography, Size,Filtration Chromatography, Gel,Filtration, Gel,Sieve Chromatography, Molecular,Size Exclusion Chromatography
D002855 Chromatography, Thin Layer Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Thin-Layer,Thin Layer Chromatography,Chromatographies, Thin Layer,Chromatographies, Thin-Layer,Thin Layer Chromatographies,Thin-Layer Chromatographies,Thin-Layer Chromatography
D003129 Comb and Wattles Fleshy and reddish outgrowth of skin tissue found on top of the head, attached to the sides of the head, and hanging from the mandible of birds such as turkeys and chickens. Wattles,Comb,Wattles and Comb,Combs,Wattle
D005965 Glucuronates Derivatives of GLUCURONIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that include the 6-carboxy glucose structure. Glucosiduronates,Glucuronic Acids,Acids, Glucuronic
D005966 Glucuronidase Endo-beta-D-Glucuronidase,Endoglucuronidase,Exo-beta-D-Glucuronidase,beta-Glucuronidase,Endo beta D Glucuronidase,Exo beta D Glucuronidase,beta Glucuronidase
D006596 Hexosaminidases Enzymes that catalyze the hydrolysis of N-acylhexosamine residues in N-acylhexosamides. Hexosaminidases also act on GLUCOSIDES; GALACTOSIDES; and several OLIGOSACCHARIDES. Galactosaminidases,Hexosaminidase,Galactosaminidase,Glucosaminidase,Glucosaminidases
D006820 Hyaluronic Acid A natural high-viscosity mucopolysaccharide with alternating beta (1-3) glucuronide and beta (1-4) glucosaminidic bonds. It is found in the UMBILICAL CORD, in VITREOUS BODY and in SYNOVIAL FLUID. A high urinary level is found in PROGERIA. Amo Vitrax,Amvisc,Biolon,Etamucine,Healon,Hyaluronan,Hyaluronate Sodium,Hyvisc,Luronit,Sodium Hyaluronate,Acid, Hyaluronic,Hyaluronate, Sodium,Vitrax, Amo

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