Question:
Phosvitin is a protein present in
Phosvitin is a protein present in
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Egg yolk contains phosvitin and lipovitellin; Egg white contains ovalbumin, conalbumin (ovotransferrin), and lysozyme.
Updated On: Sep 15, 2026
- Egg yolk
- Egg shell
- Plasma
- Egg white
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Egg yolk and egg albumen comprise distinct functional and nutritional protein fractions.
Step 2: Detailed Explanation:
Phosvitin is a unique phosphoprotein constituting approximately $11\%$ of egg yolk proteins and carrying nearly $80\%$ of all phosphorus in egg yolk.
It contains abundant phosphoserine residues, giving it an exceptional ability to bind iron ($\text{Fe}^{3+}$) and act as a powerful natural antioxidant.
In contrast, egg white proteins include ovalbumin, ovotransferrin, and lysozyme.
Step 3: Final Answer:
Hence, phosvitin is a protein present in egg yolk.
Egg yolk and egg albumen comprise distinct functional and nutritional protein fractions.
Step 2: Detailed Explanation:
Phosvitin is a unique phosphoprotein constituting approximately $11\%$ of egg yolk proteins and carrying nearly $80\%$ of all phosphorus in egg yolk.
It contains abundant phosphoserine residues, giving it an exceptional ability to bind iron ($\text{Fe}^{3+}$) and act as a powerful natural antioxidant.
In contrast, egg white proteins include ovalbumin, ovotransferrin, and lysozyme.
Step 3: Final Answer:
Hence, phosvitin is a protein present in egg yolk.
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