BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The structure refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures – helix and – pleated sheet structures.

Detailed explanation-2: -Secondary structure refers to regular, recurring arrangements in space of adjacent amino acid residues in a polypeptide chain. It is maintained by hydrogen bonds between amide hydrogens and carbonyl oxygens of the peptide backbone. The major secondary structures are -helices and -structures.

Detailed explanation-3: -A Protein Molecule Can Have an Elongated, Fibrous Shape Most of the proteins we have discussed so far are globular proteins, in which the polypeptide chain folds up into a compact shape like a ball with an irregular surface.

Detailed explanation-4: -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-5: -Secondary structure is generated by formation of hydrogen bonds between atoms in the polypeptide backbone, which folds the chains into either alpha helices or beta-sheets. Tertiary structure is formed by the folding of the secondary structure sheets or helices into one another.