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Question
Total amino acids in insulin (bovine) are 51 in polypeptide chains A and B. How many amino acids are there in chain A?
Total amino acids in insulin (bovine) are 51 in polypeptide chains A and B. How many amino acids are there in chain A?
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Solution
The correct option is A 21
Insulin is a peptide hormone secreted in an inactive form by the beta cells in the pancreatic Islet of Langerhans. It is composed of two peptide chains referred to as the A chain and B chain. A and B chains are linked together by two disulphide bonds and an additional disulphide bond is formed within the A chain. In most species, the A chain consists of 21 amino acids and the B chain is composed of 30 amino acids.Thus, the correct answer is option A.
Insulin is a peptide hormone secreted in an inactive form by the beta cells in the pancreatic Islet of Langerhans. It is composed of two peptide chains referred to as the A chain and B chain. A and B chains are linked together by two disulphide bonds and an additional disulphide bond is formed within the A chain. In most species, the A chain consists of 21 amino acids and the B chain is composed of 30 amino acids.
Thus, the correct answer is option A.
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