BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The other common secondary structure is the beta-pleated sheet. In this structure, two different regions of a polypeptide chain lie side by side and are bound by hydrogen bonds. They make up the core of many globular proteins.

Detailed explanation-2: -Secondary structure The most common types of secondary structures are the helix and the pleated sheet. Both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.

Detailed explanation-3: -The -helix is a common element of protein secondary structure, formed when amino acids “wind up” to form a right-handed helix where the side-chains point out from the central coil (Fig. 3.1A, B).

Detailed explanation-4: -There are three common secondary structures in proteins, namely alpha helices, beta sheets, and turns.

Detailed explanation-5: -The alpha helix (-helix) is a common motif in the secondary structure of proteins and is a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located four residues earlier along the protein sequence.