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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 ...
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:
Most oats contain 3-6% β-glucan by weight. Oats can be selectively bred based on favourable β-glucan levels. Often millers only process oat cultivars with at least 4% by weight β-glucan. Oat β-glucans are linear and linked at the 1,3 and 1,4 carbon sites. Oat β-glucans can form into a random coil structure and flow with Newtonian behaviour ...
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.
Schizophyllan is a β-1,3 beta-glucan with β-1,6 branching. Schizophyllan is also known as sizofiran . Schizophyllan has a molecular weight of 450,000 Da, and a specific rotation in water of +18-24°. A chemically analogous polysaccharide, scleroglucan, is formed by the fungus Athelia rolfsii. Both polysaccharides share the chemical structure ...
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).
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