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Title: The pK1, pK2, and pKR for the amino acid histidine are 1.8, 9.3, and 6.0, respectively. At pH 4.0 ... Post by: Broom on Oct 3, 2013 The pK1, pK2, and pKR for the amino acid histidine are 1.8, 9.3, and 6.0, respectively. At pH 4.0 would be charged predominantly as follows:
a) carboxylate +1, -amino 0, imidazole −1, net charge 0 b) carboxylate —1, -amino +1, imidazole 0, net charge 0 c) carboxylate +1, -amino +1, imidazole −1, net charge +1 d) carboxylate —1, -amino +1, imidazole +1, net charge +1 e) carboxylate 0, -amino +1, imidazole +1, net charge +2 Can someone please explain this to me?! I have no idea where to start. Title: Re: The pK1, pK2, and pKR for the amino acid histidine are 1.8, 9.3, and 6.0, respectively. At pH .. Post by: bio_man on Mar 24, 2017 alpha-carboxylate −1, alpha-amino +1, imidazole +1, net charge +1
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