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Arginine (abbreviated as Arg or R) is an α-amino acid.
 
It is one of the 20 most common natural amino acids on Earth, and coded for by DNA. In non-hepatic tissues, Arginine can be biosynthesized by the ornithine cycle. Even so, Arginine is often classed as one of the 10 essential amino acids.
 
 
Symbol: Arg R
Molecular [...]

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