Difference Between Globular and Fibrous Protein

Proteins are informally classified into three primary groups – Fibrous proteins, globular proteins and membrane proteins. All these groups correlate with the associated tertiary structures. In this article, we shall explore the differences between globular proteins and fibrous proteins.

Difference Between Fibrous Protein and Globular Protein

Fibrous Protein

Globular Protein

Purpose of Proteins

Structural – which means these proteins helps to maintain cell shape by providing a scaffolding

Functional – this means globular proteins carry out a specific biological function in the body

Examples

Keratin, collagen, elastin, fibrin

Haemoglobin, myoglobin, insulin, enzymes

Shape of Proteins

Usually long and narrow

Typically spherical in shape

Sequence of Acid

Amino acid sequence is repetitive in nature

Amino acid sequence is irregular

Resilience

Less sensitive to factors such as changes in temperature and pH

More sensitive to temperature and pH

Solubility

Typically insoluble in water

Typically soluble in water

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Frequently Asked Questions on Fibrous Protein and Globular Protein

What is the difference between fibrous proteins and globular protein?

Fibrous proteins are structural in nature, which means they help maintain cell shape by providing a scaffolding or a framework. On the other hand, globular proteins are functional, which means they carry out a specific biological function in the body.

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