He was also the chief investigator of the Protein Communication Group in the Center for Biomolecular and Cellular Structure in the Institute for Basic Science in Daejeon from 2018.
Moving to the US, his final postdoctoral fellowship was in the Department of Biophysics and Biochemistry, University of California, San Francisco under Professor Cheng Yifan.
In 2011, he returned to Korea to set up the Disease Molecule Biochemistry Lab in the Graduate School of Medical Science and Engineering (GSMSE) of KAIST.
[5] In December 2018, he was selected to the chief investigator of the Protein Communication Group in the new Center for Biomolecular and Cellular Structure in the headquarters of the Institute for Basic Science.
[6] His group utilized structural biology techniques and biochemical and cell-biological approaches to research molecular mechanisms of various protein complexes related to immune response and synaptogenesis.