KnowraHistidineLinked fromLinked fromThe 5 pages that link to Histidine, each with the reason it gives.All 5Related 3Narrower topic 1Compared with 1HistamineNarrower topic: Histamine is made directly from this amino acid.DeprotonationRelated: Its side chain can deprotonate and participate in enzyme catalysis.ImidazoleRelated: Its side-chain ring uses imidazole’s proton-transfer chemistry in proteins.Histamine fish poisoningRelated: Its abundance in certain fish gives histamine-producing bacteria abundant starting material.ArginineCompared with: Histidine is another basic amino acid, but its side-chain chemistry differs from arginine’s.