BIOMOLECULES AND ENZYMES

Detailed explanation-1: -A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond (Figure 3-1). Proteins are therefore also known as polypeptides.

Detailed explanation-2: -A polypeptide is an unbranched chain of amino acids that are linked together by peptide bonds. The peptide bond links the carboxyl group of one amino acid to the amine group of the next amino acid to form an amide.

Detailed explanation-3: -Peptides (from Ancient Greek (peptós) ‘digested’, from (péssein) ‘to digest’) are short chains of amino acids linked by peptide bonds. A polypeptide is a longer, continuous, unbranched peptide chain. Polypeptides which have a molecular weight of 10000 or more are called proteins.

Detailed explanation-4: -When connected together by a series of peptide bonds, amino acids form a polypeptide, another word for protein. The polypeptide will then fold into a specific conformation depending on the interactions (dashed lines) between its amino acid side chains.

Detailed explanation-5: -Primary structure. The simplest level of protein structure, primary structure, is simply the sequence of amino acids in a polypeptide chain.