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In general, β-1,3 linkages are created by 1,3-beta-glucan synthase, and β-1,4 linkages are created by cellulose synthase. The process leading to β-1,6 linkages is poorly understood: although genes important in the process have been identified, not much is known about what each of them do. [9]
These extracellular homopolysaccharides are called α-glucan polymers. Glucansucrase enzymes can synthesize a variety of glucans with differing solubilities, rheology, and other properties by altering the type of glycosidic linkage, degree of branching, length, mass, and conformation of the polymers. Glucansucrases are classified according to ...
A glucan is a polysaccharide derived from D-glucose, [1] linked by glycosidic bonds. Glucans are noted in two forms: alpha glucans and beta glucans. Many beta-glucans are medically important. They represent a drug target for antifungal medications of the echinocandin class.
Blue boxes indicate cancer cell proliferation mechanisms; green boxes indicate therapeutic interventions; red boxes indicate resistance mechanisms. Many classes of antineoplastic drugs act on intracellular components and pathways, like DNA, nuclear components, meaning that they need to enter the cancer cells.
Most glycosyltransferase enzymes form one of two folds: GT-A or GT-B. Glycosyltransferases (GTFs, Gtfs) are enzymes that establish natural glycosidic linkages.They catalyze the transfer of saccharide moieties from an activated nucleotide sugar (also known as the "glycosyl donor") to a nucleophilic glycosyl acceptor molecule, the nucleophile of which can be oxygen- carbon-, nitrogen-, or sulfur ...
β-1,3-glucanase, an enzyme in plants that breaks down β-1,3-glucans such as callose or curdlan; β-1,6 glucanase, an enzyme that breaks down β-1,6-glucans; Cellulase, an enzyme that perform the hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, lichenin and cereal β-D-glucans. [2] Xyloglucan-specific endo-beta-1,4-glucanase