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The use of hyaluronidase and glucosidase to remove mucus from the rat middle ear cavities for SEM studies.

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To conduct SEM studies on epithelium containing mucus-producing cells it is essential to remove the mucus which normally obscures the epithelial surface. This study presents a method which effectively removes the covering layer of mucus in the rat middle ear. Healthy Sprague-Dawley rats were

Dextran glucosidase: a potential target of iminosugars in caries prevention.

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It is well known that iminosugars are inhibitors of glycosyltransferases (GTFs) and glucosidases. Because of iminosugars' inhibitory effect on GTFs, scientists have made great effort to verify their roles in the prevention of caries. The inhibition of GTFs can reduce the synthesis of extracellular

Effect of alpha-amylase and alpha-glucosidase inhibitors on caries incidence and plaque accumulation in rats.

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Crystal structures of Paenibacillus polymyxa beta-glucosidase B complexes reveal the molecular basis of substrate specificity and give new insights into the catalytic machinery of family I glycosidases.

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Bacteria species involved in degradation of cellulosic substrates produce a variety of enzymes for processing related compounds along the hydrolytic pathway. Paenibacillus polymyxa encodes two homologous beta-glucosidases, BglA and BglB, presenting different quaternary structures and substrate

The 69 kDa Escherichia coli maltodextrin glucosidase does not get encapsulated underneath GroES and folds through trans mechanism during GroEL/GroES-assisted folding.

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Escherichia coli chaperonin GroEL and GroES assist in folding of a wide variety of substrate proteins in the molecular mass range of approximately 50 kDa, using cis mechanism, but limited information is available on how they assist in folding of larger proteins. Considering that the central cavity

Testudinibacter aquarius gen. nov., sp. nov., a member of the family Pasteurellaceae isolated from the oral cavity of freshwater turtles.

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A total of 13 Pasteurellaceae isolates from healthy freshwater turtles were characterized by genotypic and phenotypic tests. Phylogenetic analysis of partial 16S rRNA and rpoB gene sequences showed that the isolates investigated formed a monophyletic group. The closest related species based on 16S

Partial purification and characterization of alpha-glucosidase from Rothia dentocariosa.

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Disaccharidases of oral bacteria, especially alpha-glucosidase and beta-fructofuranosidase, are considered to play an important role in the induction of dental caries. Upon the examination of disaccharidases from several strains of saccharolytic oral bacteria, we found all of those bacteria to be

Effect of xylitol on salivary β-glucosidase in humans.

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Dental biofilm - in which a diverse set of microorganisms are embedded in a complex polysaccharide matrix that adheres to oral components - is one of the most complex microbial communities in the human body. As biofilm formation is related to oral infections, such as caries and periodontal diseases,

Comparison of the molecular interactions of 7'-carboxyalkyl apigenin derivatives with S. cerevisiae α-glucosidase.

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As one of the most investigated flavonoids, apigenin, is considered to be a strong α-glucosidase inhibitor. However, the clinical utility of apigenin is limited due to its low solubility. It was reported that the solubility and biological activity can be improved by introducing sole carboxyalkyl

Structural basis of increased resistance to thermal denaturation induced by single amino acid substitution in the sequence of beta-glucosidase A from Bacillus polymyxa.

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The increasing development of the biotechnology industry demands the design of enzymes suitable to be used in conditions that often require broad resistance against adverse conditions. beta-glucosidase A from Bacillus polymyxa is an interesting model for studies of protein engineering. This is a

Functional analysis of the aglycone-binding site of the maize beta-glucosidase Zm-p60.1.

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Beta-glucosidases such as Zm-p60.1 (Zea mays) and Bgl4:1 (Brassica napus) have implicated roles in regulating plant development by releasing biologically active cytokinins from O-glucosides. A key determinant of substrate specificity in Zm-p60.1 is the F193-F200-W373-F461 cluster. However, despite

Crystal structure of beta-glucosidase A from Bacillus polymyxa: insights into the catalytic activity in family 1 glycosyl hydrolases.

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Family 1 glycosyl hydrolases are a very relevant group of enzymes because of the diversity of biological roles in which they are involved, and their generalized occurrence in all sorts of living organisms. The biological plasticity of these enzymes is a consequence of the variety of beta-glycosidic

Activity of hydrolytic enzymes of Candida albicans strains isolated from patients with periodontal and membrane mucosae of oral cavity diseases.

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Fungi are elements of the ontocenosis of the oral cavity and causal factors of inflammatory lesions in its mucous membrane. The objective of the study was to find differences in the activity of hydrolytic enzymes of Candida albicans isolated from patients with diseases of the periodontium and mucous

Synthesis and characterization of novel, conjugated, fluorescent DNJ derivatives for α-glucosidase recognition.

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A series of five new fluorescent deoxynojirimycin (DNJ) conjugates were synthesized and evaluated for their inhibitory effect (IC50) on several α- and β-glucosidases. Three of the conjugates showed enhanced activity. The two synthetic conjugates, DNJ-CF31 and DNJ-Me 2, exhibited improved

Directed Evolution of Clostridium thermocellum β-Glucosidase A Towards Enhanced Thermostability.

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β-Glucosidases are key enzymes in the process of cellulose utilization. It is the last enzyme in the cellulose hydrolysis chain, which converts cellobiose to glucose. Since cellobiose is known to have a feedback inhibitory effect on a variety of cellulases, β-glucosidase can prevent this inhibition

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Herbal & Natural Medicine

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