Cholesterol sensing by LYCHOS regulates mTORC1 signaling through GATOR1-Rag GTPase. Here, authors reveal cryo-EM structures of LYCHOS in various states, showing cholesterol binding shifts it from an expanded to a contracted state, exposing a cytosolic element that engages GATOR1.
- Shang Yu
- Jin-hui Ding
- Ling Liang