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Protein (nutrient)
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Nutrient for the human body
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Proteins are essential nutrients for the human body. They are one of the constituents of body tissue and also serve as a fuel source. As fuel, proteins have the same energy density as carbohydrates: 17 kJ (4 kcal) per gram. The defining characteristic of protein from a nutritional standpoint is its amino acid composition.

Instance of
group or class of proteins
Subclass of
Protein
Nutrient
Wikidata