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Cell wall anionic polymers of Streptomyces sp. MB-8, the causative agent of potato scab.

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The cell wall of Streptomyces sp. MB-8 contains a major teichoic acid, viz., 1,3-poly(glycerol phosphate) substituted with N-acetyl-alpha-D-glucosamine (the degree of substitution is 60%), a minor teichoic acid, viz., non-substituted poly(glycerol phosphate), and a family of Kdn

Fluorescence spectral studies on the specific interaction between sulfated glycosaminoglycans and potato lectin.

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On excitation at 280 nm, Solanum tuberosum agglutinin (STA) produced a fluorescence emission spectrum with a maximum at 347 nm, which is typical of tryptophanyl residues. The fluorescence emission maximum was shifted toward shorter wavelength and quenched by the addition of specific sugars. The

Utility of pentose colorimetric assay for the purification of potato lectin, an arabinose-rich glycoprotein.

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Potato lectin (Solanum tuberosum agglutinin, STA) is an unusual glycoprotein containing approximately 50% carbohydrates by weight. Of the total carbohydrates, 92% is contributed by L: -arabinose, which are O-linked to hydroxyproline residues. The ferric chloride-orcinol assay (Bial's test), which is

Chitosan induces resistance to tuber rot in stored potato caused by Alternaria tenuissima.

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Alternaria tenuissima infects stored potatoes, and causes tuber rot, resulting in significant economic losses. As a naturally-occurring polysaccharide (poly-β-(1 → 4) N-acetyl-D-glucosamine), chitosan has been reported to be an eco-friendly alternative to synthetic fungicides for the control of

Cytokeratin peptide SFGSGFGGGY mimics N-acetyl-beta-D-glucosamine in reaction with antibodies and lectins, and induces in vivo anti-carbohydrate antibody response.

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Recently, we found that human anti-GlcNAc mAbs reacted with keratin from human skin and recognized specific peptide epitopes of human cytokeratin 14. Our data demonstrate that anti-keratin Ab responses in mice might be driven by Ags bearing terminal O-linked GlcNAc residues. To determine if mouse

Precision Synthesis of Functional Polysaccharide Materials by Phosphorylase-Catalyzed Enzymatic Reactions.

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In this review article, the precise synthesis of functional polysaccharide materials using phosphorylase-catalyzed enzymatic reactions is presented. This particular enzymatic approach has been identified as a powerful tool in preparing well-defined polysaccharide materials. Phosphorylase is an

Characterization of seven basic endochitinases isolated from cell cultures of Citrus sinensis (L.).

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Seven endochitinases (EC 3.2.1.14) (relative molecular masses 23,000-28,000 and isoelectric points 10.3-10.4) were purified from nonembryogenic Citrus sinensis L. Osbeck cv. Valencia callus tissue. The basic chitinase/lysozyme from this tissue (BCLVC) exhibited lysozyme, chitinase and chitosanase

Isolation and characterization of a rice gene encoding a basic chitinase.

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Chitinase, which catalyzes the hydrolysis of the beta-1,4-N-acetyl-D-glucosamine linkages of the fungal cell wall polymer chitin, is involved in inducible defenses of plants. A basic chitinase genomic sequence was isolated from a rice (Oryza sativa L.) genomic library using a bean chitinase gene

Lectins as probes for the assay of rhabdovirus infections in plants.

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Thirteen different, biotinylated plant lectins were tested for their ability to recognize specifically the glycoproteins of the two different plant rhabdoviruses potato yellow dwarf virus and eggplant mottled dwarf virus. All viruses were propagated on the same plant host species, Nicotiana rustica

Activation of Sepharose with epichlorohydrin and subsequent immobilization of ligand for affinity adsorbent.

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The optimal conditions for the activation of Sepharose by epichlorohydrin and subsequent immobilization of ligands were investigated. Under the optimal conditions for activation, namely, 30% Sepharose-5% epichlorohydrin-0.4 M NaOH, 40 degrees C, 2 h, the maximum amount of epoxy group was introduced

Changes in motility of the rhizobacterium Azospirillum brasilense in the presence of plant lectins.

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The plant-beneficial bacterium Azospirillum brasilense can swim in liquids and swarm or migrate with the formation of microcolonies in soft media. To get closer to understanding the influence of natural environments on A. brasilense motility, we studied the individual and social movement of the

Identification of perivitelline N-linked glycans as mediators of sperm-egg interaction in chickens.

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This study demonstrates that carbohydrates play an essential role in sperm-egg interactions in birds. Sperm-egg interaction was measured in vitro as the ability of spermatozoa to hydrolyse a small hole in the inner perivitelline layer, the equivalent of the mammalian zona pellucida. Preincubation

Flow cytometric analyses of lectin binding to Pneumocystis carinii surface carbohydrates.

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Pneumocystis carinii obtained from infected rat lung homogenates was incubated with fluorescein isothiocyanate-conjugated lectins, counterstained with the nuclear stain, propidium iodide (PI), and analyzed by dual parameter histograms for lectin-associated green and PI-associated red fluorescence

Characterization of glycans in the developmental stages of Myxobolus cerebralis (Myxozoa), the causative agent of whirling disease.

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Glycans and sugar-binding molecules (lectins) form an interactive recognition system, which may enable parasitic organisms to adhere to host cells and migrate into target tissues. The aim of the present study was to analyse surface-associated glycans in the developmental stages of Myxobolus

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