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| A Glycosidic bond is the type of linkage that occurs between sugar molecules.
| | See [[Glycosidic bond|glycosidic bond]] |
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| An [[Aldehyde|aldehyde]] or a [[Ketone|ketone]] group on the sugar can react with a [[Hydroxyl group|hydroxyl group]] on another sugar, this is what is known as a [[Glycosidic bond|glycosidic bond]].
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| When there are two sugar molecules linked by one [[Glycosidic bond|glycosidic link]], the resulting molecule is known as a [[Disaccharide|disaccharides]], when there are several sugar molecules linked together in this way they are known as [[Oligosaccharides|oligosaccharides]], and when there are long chains of [[sugar|sugar]] [[molecule|molecules]] linked in this way, they are known as [[Polysaccharide|polysaccharides]].
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| Glycodisic links also come in different forms and are named according to which [[carbon|carbon]] [[atom|atoms]] on the sugar molecule are involved in the linkage. For example, we can have 1,4 - [[Glycosidic bond|glycosidic bond]]. which involves carbon atom number 1 on one sugar and carbon atom number 4 on another sugar. These types of bonds form straight chains. There are also 1,6 - glycosidic bonds where carbon atom number 1 on one sugar is linked to carbon atom number 6 on another, this forms branch points in the molecule for example in the structure of [[Glycogen|glycogen]] and [[Starch|starch]]. The combination of 1,4 - glycosidic bonds and 1, 6 - glycosidic bonds in a polysaccharide makes it unique and chemically identifiable by specific [[Enzyme|enzymes]] and [[Receptor|receptors]] <ref>Page 113, Molecular Biology of the Cell fifth edition, Alberts et al., 2008, Garland Science, New York.</ref><br>
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| === Reference: ===
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| <references />
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Latest revision as of 17:39, 10 January 2011