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| Description: Lysine (pKa = 10.0) and arginine (pKa = 12.5) are the more basic amino acids. Their side chains are almost always positively charged under physiological conditions. The guanidino group of arginine makes it the most basic amino acid due to the resonance stabilization of the protonated side chain. Picture Stats: Views: 217 Filesize: 62.61kB Height: 412 Width: 677 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=33909 |