Question

Beta-pleated is a secondary structure of the protein. Primary structure folded to form secondary structure. Hydrogen bonds are responsible for the formation of secondary structure. Solve the given question to have a better understanding of the beta-pleated sheet.In β-pleated secondary protein structure there are:

• A. (A) Two or more polypeptide chains
• B. (B) Hydrogen bonds between adjacent polypeptide chains
• C. (C) Parallel or antiparallel polypeptides
• D. (D) All of the above

Answer 1

Answer: (D)

(D) All of the above

Answer 2

Explanation:
Protein is formed by the amino acids which are linked together by peptide bonds.β-pleated secondary protein structure is formed by the parallel or anti-parallel polypeptide chain linked together by H - bonds. It is stabilized by the hydrogen bonds formed between NH and Co of the adjacent polypeptide chain. The distance between the adjacent amino acids are 3.5 Ao.Hence, the correct option is (D).