BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The most prevalent is the alpha helix. The alpha helix (-helix) has a right-handed spiral conformation, in which every backbone N-H group donates a hydrogen bond to the backbone C=O. group of the amino acid four residues before it in the sequence. The other common type of secondary structure is the beta strand .

Detailed explanation-2: -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: -Some amino acids are particularly likely to form an alpha helix, but some, like proline, are too large and get in the way. Alpha helices are low-energy and stable, which is why they are the most common secondary structure.

Detailed explanation-4: -The two most common secondary structural elements are alpha helices and beta sheets, though beta turns and omega loops occur as well. Secondary structure elements typically spontaneously form as an intermediate before the protein folds into its three dimensional tertiary structure.

Detailed explanation-5: -An alpha helix is an element of secondary structure in which the amino acid chain is arranged in a spiral.