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Question

Illustrate a glycosidic acid and a phosphodiester bond.

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Solution

A glycosidic bond is a type of covalent bond in which one carbohydrate molecule is attached to other molecules. formed between the hemiacetal or hemiketal group of a saccharide and the hydroxyl group of some compound such as an alcohol. The compounds ROH from which the carbohydrate residue has been removed is often termed the aglycone, and the carbohydrate residue itself is sometimes referred to as the 'glycone'.
In DNA and RNA, the phosphodiester bond is the linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another, deoxyribose in DNA and ribose in RNA. Strong covalent bonds form between the phosphate group and two 5-carbon ring carbohydrates over two ester bonds.

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