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Pleiotropic Sugar Trehalose Essay

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The pleiotropic sugar trehalose (α-D-glucopyranosyl α-D-glucopyranoside) acts as a reserve carbohydrate and potential stress protectant under harsh conditions. It is accumulated in cells shifted to higher temperatures; it seems that the disaccharide represents a stress response product. In addition to being non-reducing, it possesses several unique physical properties, which include high hydrophilicity and chemical stability and the absence of internal hydrogen bond formation. Due to its unusual physical features, trehalose is able to protect the integrity of the cell against a variety of environmental injuries and nutritional limitations. These characters also accounts for the principal role of trehalose as a stress metabolite. Accumulation

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