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Cellulose is an example of a (1→4)-β- D -glucan composed of glucose units. Beta-glucans, β-glucans comprise a group of β- D -glucose polysaccharides ( glucans) naturally occurring in the cell walls of cereals, bacteria, and fungi, with significantly differing physicochemical properties dependent on source. Typically, β-glucans form a ...
Glucan 1,3-β-glucosidase ( EC 3.2.1.58, exo-1,3-β-glucosidase, β-1,3-glucan exo-hydrolase, exo (1→3)-glucanohydrolase, 1,3-β-glucan glucohydrolase) is an enzyme with systematic name 3-β-D-glucan glucohydrolase. [1] [2] It catalyses the successive hydrolysis of β- D - glucose units from the non-reducing ends of (1→3)-β- D -glucans ...
The family consists of various 1,3-beta-glucan synthase components including Gls1, Gls2, and Gls3 from yeast. 1,3-Beta-glucan synthase (EC 2.4.1.34.) also known as callose synthase catalyses the formation of a beta-1,3-glucan polymer that is a major component of the fungal cell wall. [4] The reaction catalysed is:
Lentinan is a β-1,3 beta-glucan with β-1,6 branching. It has a molecular weight of 500,000 Da and specific rotation of +14-22° (NaOH).
Glucanase. Glucanases are enzymes that break down large polysaccharides via hydrolysis. The product of the hydrolysis reaction is called a glucan, a linear polysaccharide made of up to 1200 glucose monomers, held together with glycosidic bonds. [1] Glucans are abundant in the endosperm cell walls of cereals such as barley, rye, sorghum, rice ...
Glucan. 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.
Glucan endo-1,3-β-D-glucosidase (EC 3.2.1.39, endo-1,3-β-glucanase, laminarinase, laminaranase, oligo-1,3-glucosidase, callase, beta-1,3-glucanase, Kitalase (trademark), 1,3-β-D-glucan 3-glucanohydrolase, endo-(1,3)-β-D-glucanase, (1→3)-β-glucan 3-glucanohydrolase, endo-1,3-β-D-glucanase, endo-1,3-β-glucosidase, 1,3-β-D-glucan glucanohydrolase) is an enzyme with systematic name 3-β ...
Curdlan is a water-insoluble linear beta-1,3- glucan, a high-molecular-weight polymer of glucose. Curdlan consists of β- (1,3)-linked glucose residues and forms elastic gels upon heating in aqueous suspension. It was reported to be produced by Alcaligenes faecalis var. myxogenes. [1] Subsequently, the taxonomy of this non-pathogenic curdlan ...