MAURIZIO DE ANGELIS / SCIENCE PHOTO LIBRARY MAURIZIO DE ANGELIS / SCIENCE PHOTO LIBRARY
Arginine amino acid molecule. Computer illustration showing the structure of a molecule of the amino acid arginine (C6.H14.N4.O2). Atoms are represented as spheres and are colour-coded: carbon (black), hydrogen (white), Nitrogen (blue), and Oxygen (red). This complex amino acid plays an important role in nitrogen metabolism and acts as intermediate in the urea cycle and in detoxification of nitrogenous wastes. It is often found at active site in proteins and enzymes due to its amine-containing side chain.
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