[1] His primary responsibilities are to provide leadership in research and teaching in the scientific fields of metabolism, membrane biology and lipids.
[6][7] His group extensively studied proteins required to adjust lipid droplet size and composition according to the cellular state.
Moving to Harvard, Walther is working in a scientific partnership with Robert V. Farese, Jr., on the biochemistry, cell biology, and genetics of lipid metabolism and homeostasis.
Walther then joined the Department of Biochemistry and Biophysics at the University of California, San Francisco, to complete his postdoctoral studies.
After completion of his postdoctoral training, Walther became group leader at the Max Planck Institute of Biochemistry in Martinsried, Germany.