Which of the following statements regarding the structure of pro-insulin and mature insulin is/are incorrect?
(i) Pro-insulin is made up of three polypeptide chains.
(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.
(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.

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

(i) and (ii)

(iii) and (iv)

(iv) and (v)

(iii), (iv) and (v)

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Polypeptide chain A has 21 amino acids and polypeptide chain B has 30 amino acids.

Polypeptides A and B are interconnected by two S-S linkages.

Watch 3-min video & get full concept clarity