Histidine

Histidine

(Science: amino acid) An amino acid with an imidazole side chain with a pKa of 6-7. Acts as a proton donor or acceptor and has high potential reactivity and diversity of chemical function. Forms part of the catalytic site of many enzymes. An essential amino acid found in proteins that is important for the growth and repair of tissue.One of twenty amino acids commonly found in [[proteins.


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