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Protein - Wikipedia
Protein–protein interactions also regulate enzymatic activity, control progression through the cell cycle, and allow the assembly of large protein complexes that carry out many closely related reactions with a common biological function. Proteins can also bind to, or even be integrated into, cell membranes.
protein | Definition, Structure, & Classification | Britannica
Protein, highly complex substance that is present in all living organisms. Proteins are of great nutritional value and are directly involved in the chemical processes essential for life.
Protein (nutrient) - Wikipedia
Proteins are polymer chains made of amino acids linked together by peptide bonds. During human digestion, proteins are broken down in the stomach to smaller polypeptide chains via hydrochloric acid and protease actions. This is crucial for the absorption of the essential amino acids that cannot be biosynthesized by the body.
What is protein? - WebMD
Protein is one of three main classes of food. Proteins are made of amino acids, which function as a cell's "building blocks." Cells need protein to grow and to mend themselves. Protein is found in...
What Is Protein? | Live Science
Protein is a macronutrient that is essential to building muscle mass. It is commonly found in animal products, though is also present in other sources, such as nuts and legumes. There are three...
Healthy Protein Food Sources - WebMD: Eggs, Milk, Cheese ...
Seafood Seafood is an excellent source of protein because it's usually low in fat. Fish such as salmon is a little higher in fat, but it is the heart -healthy kind: it has omega-3 fatty acids.
Protein | The Nutrition Source | Harvard T.H. Chan School ...
Protein is found throughout the body—in muscle, bone, skin, hair, and virtually every other body part or tissue. It makes up the enzymes that power many chemical reactions and the hemoglobin that carries oxygen in your blood. At least 10,000 different proteins make you what you are and keep you that way.
The Benefits of Protein - WebMD
Protein is an important building block of bones, muscles, cartilage, skin, and blood. Along with fat and carbohydrates, protein is a "macronutrient," meaning that the body needs relatively large...
20 Delicious High Protein Foods to Eat
Protein makes up the building blocks of organs, muscles, skin, and hormones. Your body needs protein to maintain and repair tissues. Meanwhile, children need it for growth. Studies show that eating...