This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Histidine is converted to histamine by: \nSelect and explain. \nA. Transamination, B. Hydroxylation, C. Decarboxylation, D. Reduction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Active form of Pyridoxine\n\nPyridoxal Phosphate (PLP)\nMainly used for Amino Acid metabolism.\n\nCoenzyme Role of Pyridoxal Phosphate (PLP)\nTransamination\n\nAlanine Amino Transferase (ALT)\nAspartate Amino Transferase (AST)\nAlanine Glyoxalate Amino Transferase.\n\nDecarboxylation of amino acids\nThis results in the formation of Biogenic Amines\n\nGlutamate: CABA\n5-Hydroxy Tryptophan: Serotonin\nHistidine: Histamine\nCysteine: Taurine\nSerine: Ethanolamine\nDOPA: Dopamine.\n\nKey Concept:\nHistidine is converted to Histamine by the process of decarboxylation.', 'role': 'assistant'}]