Kang-Yell Choi, Ph.D. is an academic. He completed his doctorate in Biochemistry at the Purdue University in 1993. Then, Kang-Yell Choi performed research related to cell signaling at Harvard Medical School as a postdoctoral fellow. His research at Harvard investigated the function of Saccharomyces Ste5 involving pheromone response via MAP kinase pathway and was published as the 1st paper introducing the concept of "Scaffold protein" in the community.