Illustrate a glycosidic, peptide and a phosphodiester bond.
(a) A glycosidic bond or glycosidic linkage is a type of covalent bond that joins a carbohydrate (sugar) molecule to another group, which may or may not be another carbohydrate. Glycosidic bond is formed normally between carbon atoms, 1 and 4, of neighbouring monosaccharide units.
(b) A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). or
Peptide bond is a covalent bond that joins the two amino acids by – NH – CO linkage.
(c) A phosphodiester bond occurs when exactly two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds. Such bonds form the sugar-phosphate backbone of nucleic acids.