This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'mGluR 4 is associated with which taste? \nSelect and explain. \nA. Sweet, B. Sour, C. Bitter, D. Umami', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D UmamiRef: Ganong, 25th ed. pg. 222* Most taste buds on the tongue and other regions of the mouth can detect umami taste, irrespective of their location.* Biochemical studies have identified the taste receptors responsible for the sense of umami as modified forms of mGluR4, mGluR1 and taste receptor type 1 (T1R1 + T1R3), all of which have been found in all regions of the tongue bearing taste buds.', 'role': 'assistant'}]