This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins bonds and structure, Subject name: Biochemistry
[{'content': 'Glutathione is a \nSelect and explain. \nA. Dipeptide, B. Polypeptide, C. Tripeptide, D. Oligopeptide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Glutathione is -glutamyl cysteinyl glycine, i.e. glutathione is a tripeptide made up of 3 aminoacyl residues - Glutamate, Cysteine, Glycine Gluta - Glutamate Thi- Sulfur containing (Cysteine) One- Glycine (1 C amino acid) Glutathione is the major intracellular reducing substance/anti-oxidant SH group of glutathione is responsible for its antioxidant function.', 'role': 'assistant'}]