Answer:
HISTIDINE
Explanation: Histidine is an Amino acid that is very important in the biosynthesis of proteins composed of an ALPHA AMINO GROUP and a CARBOXYLIC ACID, the formular of HISTIDINE is C6H9N3O2.
HISTIDINE is also responsible for the maintaining the body PH and regulate it around seven (7) it does this by stopping the release of Protons in the Blood and the Tissues.
