GCE CIE BIOL - Collagen (Fibrous Proteins)
Chapter 2 Biological Molecules
2.3.c Describe the molecular structure of haemoglobin as an example of a globular protein, and of collagen as an example of a fibrous protein and relate these structures to their functions (The importance of iron in the haemoglobin molecule should be emphasised. A haemoglobin molecule is composed of two alpha (α) chains and two beta (β) chains, although when describing the chains the terms α-globin and β-globin may be used. There should be a distinction between collagen molecules and collagen fibres).
The above image shows the structure of a fibrous protein.
The diagram shows how three polypeptide chains make one collage molecule, and how many collagen molecules make collagen fibrils.
Well done my friend! Onwards we go! 🙌
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Written by Aayushi | GCE CIE Biology Specialist @ TUTTEE
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