Which structure of protein remains intact after coagulation of egg white on boiling?
Biomolecules · Class 12 · JEE Main Previous Year Question
Which structure of protein remains intact after coagulation of egg white on boiling?
- a✓
Primary
- b
Tertiary
- c
Secondary
- d
Quaternary
Primary
Step 1: Understanding Denaturation — Boiling egg white causes denaturation, a process where proteins lose their higher-order folded structures.
Step 2: Affected Levels — The secondary, tertiary, and quaternary structures are disrupted as non-covalent interactions (like H-bonds) are broken by heat.
Step 3: Preserved Level — The covalent peptide bonds forming the primary structure remain intact, preserving the original sequence of amino acids.
Key Point: Denaturation involves a loss of biological activity, but not the destruction of the chemical backbone of the protein.
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