Lysine vs. Arginine — What's the Difference?

Difference Between Lysine and Arginine
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Lysine
Lysine (symbol Lys or K) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain lysyl ((CH2)4NH2), classifying it as a basic, charged (at physiological pH), aliphatic amino acid.
Sep 24, 2021
Arginine
Arginine, also known as l-arginine (symbol Arg or R), is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group, an α-carboxylic acid group, and a side chain consisting of a 3-carbon aliphatic straight chain ending in a guanidino group.
Sep 24, 2021
Lysine
An essential amino acid, C6H14N2O2, obtained by the hydrolysis of proteins and required by the body for optimum growth.
Sep 24, 2021
Arginine
An amino acid, C6H14N4O2, obtained from the hydrolysis or digestion of plant and animal protein.
Sep 24, 2021
Lysine
(amino acid) An essential amino acid, C6H14N2O2.
Sep 24, 2021
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Arginine
An amino acid found in animal foods that plays an important role in several physiological processes.
Sep 24, 2021
Lysine
An essential amino acid found in proteins; occurs especially in gelatin and casein
Sep 24, 2021
Arginine
A bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa
Sep 24, 2021
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