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What is protein in Chemistry

Illustrate what is protein in Chemistry?

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The Protein is a source of backup energy which our body stores, a large composite molecule made up of one or more than one chains of amino acids. Proteins implement a wide variety of activities in a cell.
Extremely complex nitrogenous compounds found in all the animal and vegetable tissues. Proteins, the main constituents of protoplasm of all the cells are of high molecular weight, and consist basically combinations of amino acids in peptide linkages. Twenty different amino acids are usually found in proteins and every protein has a single, naturally defined amino acid sequence which determines its particular function and shape.

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