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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]] or a [[Ketone]] group on the sugar can react with a [[Hydroxyl group]] on another sugar, this is what is known as a Glycosidic bond.
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| When there are two sugar molecules linked by one Glycosidic link, the resulting molecule is known as a [[Disaccharide]]s, when there are several sugar molecules linked together in this way they are known as [[Oligosaccharides]], and when there are long chains of sugar molecules linked in this way, they are known as [[Polysaccharide]]s.
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| Glycodisic links also come in different forms and are named according to which carbon atoms on the sugar molecule are involved in the linkage. For example, we can have [[1,4 - Glycosidic bonds]] 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]] and [[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]]s and [[Receptor]]s.
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| Reference: Page 113, Molecular Biology of the Cell fifth edition, Alberts et al., 2008, Garland Science, New York.
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Latest revision as of 17:39, 10 January 2011