Protein

Definition

Protein is a macronutrient that is essential for building and repairing tissues in the body. It is made up of building blocks called amino acids, which are linked together in various combinations to form different proteins. Protein is found in many different foods, including meat, fish, eggs, dairy, legumes, and grains.

Examples

• Chicken breast
• Tuna fish
• Eggs
• Black beans

Synonyms

• Amino acids
• Proteinaceous
• Peptides
• Polypeptides

Related Terms

• Muscle synthesis
• Nitrogen balance
• Protein quality
• Protein requirement