How amino acids are bound in polypeptide chain?

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). ... Polypeptides and proteins are chains of amino acids held together by peptide bonds, as is the backbone of PNA. #PeptideChemicalClassification #ProteinNutrient #ChemistryFieldOfStudy #genetics #DNA #protein #RNA