A semiessential or conditionally essential amino acid in mammals. Arginine acts as a base under physiological conditions; the double-bonded nitrogen on the end of the side chain readily captures a hydrogen ion, becoming positively charged. This charged side group makes arginine hydrophilic.


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Atomic / Molecular Weight 174.2 gmol-1Clip
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See also: Amino Acid, Hydrophilic.

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Subjects: Biology Chemistry