Structure-function relationships of glucansucrase and fructansucrase enzymes from lactic acid bacteria

Article Abstract:

Lactic acid bacteria employ sucrase-type enzymes to convert sucrose into homopolysaccharides consisting of either glucosyl units or fructosyl unite and the enzymes involved are labeled as glucansucrases (GS) and fructansucrases (FS), respectively. The GS and FS enzymes are both glycoside hydrolase enzymes that act on the same substrate and catalyze transflycosylation reactions that result in polysaccharide formation, but they possess completely different protein structures.

All Other Basic Organic Chemical Manufacturing, Industrial organic chemicals, not elsewhere classified, Industrial Organic Chemicals, Polysaccharides, Lactic Acid, Enzyme activation, Chemical properties

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Microbial dextran-hydrolyzing enzymes: Fundamentals and applications

Article Abstract:

The enzymatic properties of dextran-hydrolyzing enzymes from different microbial sources, existing nomenclature, cloning and sequence analysis of dextranase genes, methods for measuring dextran-hydrolyzing activity and potential applications of dextranases are discussed. A brief outline of the structure and properties of dextran polymer and dextran-synthesizing enzymes is presented, to comprehend the special nature of dextran-degrading enzymes.

Russia, Properties, Structure, Dextran, Dextrans

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Sortases and the art of anchoring proteins to the envelopes of gram-positive bacteria

Article Abstract:

The cell wall envelopes of gram-positive bacteria represents a surface organelle that not only functions as a cytoskeletal element but also promotes interactions between bacteria and their environment. Review focusing on the mechanisms of surface protein anchoring to the cell wall envelop by sortases and the role these enzymes play in bacterial physiology and pathogenesis is presented.

Gram-positive bacteria, Cytoskeletal proteins, Cell organelles, Organelles

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