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Question -

Differentiate between globular and fibrous proteins.



Answer -

S.No

Fibrous protein

Globular protein

1

These proteins are held together by strong hydrogen and disulphide bonds.

The polypeptide chain in this protein is folded around itself, giving rise to a spherical structure.

2

It is usually insoluble in water

It is usually soluble in water.

3

Fibrous proteins are usually used for structural purposes. For example, keratin is present in nails and hair; collagen in tendons; and myosin in muscles.

All enzymes are globular proteins. Some hormones such as insulin are also globular proteins.

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