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Mannose is a sugar with the formula HOCH 2 (CHOH) 4 CHO.It is one of the monomers of the aldohexose series of carbohydrates.It is a C-2 epimer of glucose.Mannose is important in human metabolism, especially in the glycosylation of certain proteins.
Mannans are polymers containing the sugar mannose as a principal component. [1] [2] They are a type of polysaccharide found in hemicellulose, a major source of biomass found in higher plants such as softwoods. These polymers also typically contain two other sugars, galactose and glucose. They are often branched (unlike cellulose).
The precursor molecule, ready to be transferred to a protein, consists of two GlcNAc, nine mannose, and three glucose molecules. Step-by-step synthesis of the precursor oligosaccharide in the ER lumen during N-linked glycosylation: the diagram illustrates the steps occurring in both the Phase I and Phase II as described in the table.
Because mannose and glucose are stereoisomers at C2, which is crucial to the mechanism for both enzymes, PMI must allow extra space in the active site to allow for rotation of mannose to form the cis-enediol intermediate, which is the same intermediate formed by phosphoglucose isomerase. [10]
Humans can consume a variety of carbohydrates, digestion breaks down complex carbohydrates into simple monomers (monosaccharides): glucose, fructose, mannose and galactose. After resorption in the gut , the monosaccharides are transported, through the portal vein , to the liver, where all non-glucose monosacharids (fructose, galactose) are ...
Glucose is a sugar with the molecular formula C 6 H 12 O ... In dilute sodium hydroxide or other dilute bases, the monosaccharides mannose, glucose and fructose ...
Galactoglucomannan is a water-soluble hemicellulose, consisting of galactose, glucose and mannose. Many softwood species, e.g. Norway spruce are rich of galactoglucomannans and can contain it up to 10–20%. [1]
Concanavalin A (ConA) is a lectin (carbohydrate-binding protein) originally extracted from the jack-bean (Canavalia ensiformis).It is a member of the legume lectin family. It binds specifically to certain structures found in various sugars, glycoproteins, and glycolipids, mainly internal and nonreducing terminal α-D-mannosyl and α-D-glucosyl groups.
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