Which of the following statements regarding the structure of proinsulin and mature…
Biology · Class 12 · CBSE — Biotechnology and its Applications
Which of the following statements regarding the structure of proinsulin and mature insulin are not correct?
(i) Proinsulin is made up of three polypeptide chains — A, B and C.
(ii) C - polypeptide chain with 33 amino acids is removed prior to insulin formation.
(iii) Mature insulin is made up of 51 amino acids arranged in two polypeptide chains — A and B.
(iv) Polypeptide chain A has 30 amino acids and polypeptide chain B has 21 amino acids.
(v) Polypeptide chains A and B are interconnected by only one S – S linkage.
(i) Proinsulin is made up of three polypeptide chains — A, B and C.
(ii) C - polypeptide chain with 33 amino acids is removed prior to insulin formation.
(iii) Mature insulin is made up of 51 amino acids arranged in two polypeptide chains — A and B.
(iv) Polypeptide chain A has 30 amino acids and polypeptide chain B has 21 amino acids.
(v) Polypeptide chains A and B are interconnected by only one S – S linkage.
- (i) and (ii)
- (iii) and (iv)
- (iv) and (v)
- (iii), (iv) and (v)
Answer
(D) (iii), (iv) and (v)
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