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  4. Formation of both peptide and glycosidic bonds involves

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Q. Formation of both peptide and glycosidic bonds involves

Delhi UMET/DPMTDelhi UMET/DPMT 2010Biomolecules

Solution:

Peptide bond is an amide linkage which is formed between $COOH$ group of one amino acid and $NH_2$ group of another amino acid. A water molecule is always eliminated in forming of a peptide bond. A sugar molecule has several reactive hydroxyl groups. The hydroxyl group of $1^\text{st}\,C$ atom forms a linkage with a hydroxyl groups of another sugar molecule, during this a water molecule is eliminated. In this process of dehydration synthesis, the bond formed is called glycosidic bond.