Denaturation of a proteinप्रोटीन का विकृतीकरणDenaturation of a protein

NCERT 10.2.4 · Class 12 Chemistry · Chapter 10 · interactive diagram

Parts and what they mean

• Native protein (प्राकृत प्रोटीन) — Protein in a biological system with a unique three-dimensional structure and biological activity.
• Hydrogen bonds holding the fold (मोड़ को थामे हाइड्रोजन बंध) — These are disturbed by a physical change (temperature) or a chemical change (pH).
• Heat or change in pH (ताप या pH में परिवर्तन) — Hydrogen bonds are disturbed, globules unfold and helices uncoil.
• Denatured protein (विकृत प्रोटीन) — Secondary and tertiary structures are destroyed; the protein loses its biological activity.
• Primary structure intact (प्राथमिक संरचना अक्षुण्ण) — Peptide bonds are not broken in denaturation — only the folding is lost.
• Coagulation of egg white on boiling (उबालने पर अंडे की सफ़ेदी का स्कंदन) — A common example of denaturation.
• Curdling of milk (दूध का फटना/जमना) — Caused by lactic acid formed by bacteria present in milk (change in pH).

Original diagram drawn by Simple Learning Hub, based on NCERT 10.2.4. Report a mistake