Get an Answer At pH 4, histidine (pKs are α-carboxylate 1.8, α-amino 9.33, 6.04 imidazole) Smart Writing ServicesOctober 25, 2017 12:48 pmOctober 25, 2017 Previous Articlewhat would be the charge of the functional groups (α-carboxylate, α-amino, side chainNext ArticleDo amino acid side-chain residues have different pKs