The building blocks of the polypeptides are the amino acids
Amino acids are molecules that combine to form proteins which are also known as polypeptides. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left behind. The human body uses amino acids to make proteins that help the body.
BCAAs are considered essential because, unlike non-essential amino acids, your body cannot manufacture them. Therefore, it is important to get them from your diet. There are three types of BCAAs: leucine, isoleucine, and valine. Both have branched molecular structures and are considered essential to the human body.
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