Role proteins play in our bodies:
Proteins are composed of large complex molecules that contain long chains of amino acids. Protein is a class of nutrients that can supply energy to the body.
Chemical compounds that have special functions in the body, including supplying nitrogen for growth and maintenance.
Essential Amino Acids:
Six amino acids are considered conditionally essential in the human diet, meaning their synthesis can be limited under special pathophysiological conditions, such as prematurity in the infant or individuals in severe catabolic distress. These six are arginine, cysteine, glycine, glutamine, proline and tyrosine.
Types of Proteins:
Complete proteins- proteins that contain all the essential amino acids in the right amount. Good sources of complete proteins are meat , poultry, fish, eggs and dairy products.
Incomplete proteins- Food that lacks one or more of the essential amino acids. Food from plant sources are incomplete proteins.
Complementary proteins- Two or more incomplete protein sources that together provide adequate amounts of all the essential amino acids.