Protein - Wikipedia
A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. This protein was the first to have its structure solved by X-ray crystallography. Toward the right …
Protein | Definition, Structure, & Classification | Britannica
Dec 31, 2025 · A protein is a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds. Proteins are present in all living organisms and …
Protein • The Nutrition Source
Protein is an essential macronutrient, but not all food sources of protein are created equal, and you may not need as much as you think. Learn the basics about protein and shaping your diet …
Protein in diet: MedlinePlus Medical Encyclopedia
Apr 1, 2025 · Proteins are the building blocks of life. Every cell in the human body contains protein. The basic structure of protein is a chain of amino acids.
Protein - National Human Genome Research Institute
3 days ago · Protein. Most familiar are proteins that make up structures, such as muscle and, very importantly, proteins that fold and form what are known as enzymes. These proteins help your …
38 high-protein foods - Medical News Today
Apr 24, 2025 · Eating a high protein diet can help people to lose fat and build muscle. Learn about foods that are high in protein.
Protein: Why Your Body Needs It - WebMD
Sep 11, 2024 · Your body needs protein to work the way it should. Learn the recommended amount you need and best sources.