The Sorting and Assembly Machinery (SAM) complex folds beta-barrel proteins and inserts them into the mitochondrial outer membrane. Here authors report cryoEM structures of the SAM complex from Myceliophthora thermophila, which reveals a GST-like fold for Sam35 and Sam37 and sheds light on how the Sam50 beta-barrel opens a lateral gate to accommodate its substrates.
- Kathryn A. Diederichs
- Xiaodan Ni
- Susan K. Buchanan