Amino acids

• are molecules that combine to form proteins.
• Amino acids and proteins are the building blocks of life
• When proteins are digested or broken down, amino acids are left.
• The human body uses amino acids to make proteins to help the body.  

Amino acids are classified into three groups:

• Essential amino acids
• Nonessential amino acids
• Conditional amino acids

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Amino Acids: Structure, Groups and Function: 'Amino acids are organic molecules that, when linked together with other amino acids, form a protein. Amino acids are essential to life because the proteins they form are involved in virtually all cell functions. Some proteins function as enzymes, some as antibodies, while others provide structural support. Although there are hundreds of amino acids found in nature, proteins are constructed from a set of 20 amino acids.'

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R-group or side chain:  Amino acids are the building blocks that form polypeptides and ultimately proteins. Consequently, they are fundamental components of our bodies and vital for physiological functions such as protein synthesis, tissue repair and nutrient absorption. Here we take a closer look at amino acid properties, how they are used in the body and where they come from. There are 20 amino acids that make up proteins and all have the same basic structure, differing only in the c they have. 

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