Encyclopedia
Proteins
Proteins are high-molecular-weight nitrogen-containing biopolymers composed of L-amino acids. They perform plastic, energy-related, catalytic, hormonal, regulatory, protective, transport, energy-related, and other functions
Source: "MR 2.3.1.2432-08. Norms of Physiological Energy and Nutrient Requirements for Different Population Groups in the Russian Federation. Methodological Recommendations" (approved by Rosпотребнадзор on December 18, 2008)