Explain about the proteins, Biology

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Explain about the Proteins?

Proteins, as you may already know, are made up of carbon, hydrogen, nitrogen, oxygen and usually sulphur. Proteins are built up of a large number of amino acid molecules inter linked by peptide bonds as illustrated in figure. All the amino acids have a trivial or common name, many a times is related to the source from which they have been first isolated. For example:

1408_Proteins - Classification, Composition and Biological Functions.png

Amino acids are twenty in number, and you have read in the Nutritional Biochemistry Course that they are classified according to the nature of the side chain (R group).


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