Differentiate between globular and fibrous proteins.

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Fibrous proteinGlobular protein
$1.$ It is a fibre-like structure formed by the polypeptide chain. These proteins are held together by strong hydrogen and disulphide bonds.$1.$ The polypeptide chain in this protein is folded around itself,giving rise to a spherical structure.
$2.$ It is usually insoluble in water.$2.$ 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.$3.$ All enzymes are globular proteins. Some hormones such as insulin are also globular proteins.

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