Question
Explain the difference between globular and fibrous proteins.

Answer

Globular Proteins : Globular proteins are those which are usually coiled into compact and have spherical shape. These are generally soluble in water. Almost all enzymes and transport proteins are globular. Example insulin, albumine etc.
Fibrous Proteins : Fibrous proteins are those which consist of polypeptide chain arranged side in long threads. These are insoluble in water. They play a structural role in living organism. Example : collagen, myorin, $\alpha$-keratin etc.

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