Question

Glycine and proline are the most abundant amino acids in the structure of:

• A. \( \text{Hemoglobin} \)
• B. \( \text{Myoglobin} \)
• C. \( \text{Insulin} \)
• D. \( \text{Collagen} \)

Hint:

Collagen synthesis relies on hydroxylation of proline and lysine, requiring vitamin C for proper function.

Answer 1

The Correct Option is D

Collagen, the structural protein in connective tissues, contains high levels of glycine and proline. Glycine ensures tight packing of collagen helices, while proline contributes to stabilization through ring rigidity. These amino acids enable collagen’s strength and elasticity in skin, bones, and cartilage.