Question

Differentiate between globular and fibrous proteins.

Answer 1

Characteristic difference between globular and fibrous proteins can be given as :

	Globular Proteins	Fibrous Proteins
1.	These are cross linked proteins and are condensation products of acidic and basic amino acids.	These are linear condensation polymers.
2.	These are usually soluble in water, mineral acids and bases.	These are insoluble in water but soluble in strong acids and bases.
3.	These proteins have three dimensional folded structure. These are stabilised by internal hydrogen bonding e.g., egg albumin and enzymes.	These are linear polymers held together by intermolecular hydrogen bonds and some disulphide bonds. e.g., hair and silk.