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What are amino acids?

Michael T. Murray, ND
Naturopathic Medicine

Proteins are composed of building blocks known as amino acids. Amino acids are compounds containing carbon, hydrogen, oxygen, nitrogen, and in some cases sulfur. All amino acids have an acid group and an amino group attached to a carbon atom.

The human body can manufacture most of the amino acids required for making body proteins. However, there are nine essential amino acids, which cannot be manufactured by the human body. The quality of a protein source is based on its level of these essential amino acids along with its digestibility, and ability to be utilized by the body. The amino group of one amino acid can link with the acid group or carboxyl end of another amino acid to form a chain. This link is called a peptide bond. Two amino acids join together to form a dipeptide, while many amino acids join together to form a polypeptide.

Encyclopedia of Healing Foods

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Encyclopedia of Healing Foods

From the bestselling authors of The Encyclopedia of Natural Medicine, the most comprehensive and practical guide available to the nutritional benefits and medicinal properties of virtually everything...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.