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Arginine is one of the twenty amino acids. It is most commonly found in its stereotypical L-isomeric formation and is a polar, positively charged molecule.
Arginine displays basic properties in most basic, acidic and neutral environments due to the nature of its side chain or R-group. Its side chain contains a complex guanidinium cap on an aliphatic 3 carbon chain. Multiple H-bonds are able to form due to the conjugation of double bonds and lone pairs on the nitrogen atoms.
Berg, J. M., Tymoczko, J. L., & Stryer, L. (2002). Biochemistry (5th ed.). New York: W.H. Freeman.
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