Topics:
Animal Nutrition, Animal Refresher
Primary Amino Acid in Collagen
Collagen is the richest source of:
- Glycine — Correct Answer
- Proline
- Hydroxyproline
- Cysteine
Explanation:
Correct Answer: Glycine
Collagen is the most abundant structural protein in the body (connective tissue, tendon, bone matrix, skin). It is the richest known biological source of Glycine, which constitutes approximately 33–35% of all its amino acid residues (every third position in the repeating Gly-X-Y triplet sequence).
Collagen — Amino Acid Profile
| Status | Amino Acid | Notes |
|---|---|---|
| Richest in | Glycine (~35%) | Essential for triple-helix structure of collagen |
| High in | Proline & Hydroxyproline (~21% combined) | Unique to collagen; provide rigidity |
| Deficient in | Tryptophan & Cysteine | Makes collagen an incomplete protein |
Key Note on Essential Amino Acids
- Main EAA in Poultry: Glycine
- Main EAA in Pig: Lysine
- Main EAA in Sheep: Methionine
- Main EAA in Cat: Taurine
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
