Exploring molecular landscapes inside cells with in situ cryo-electron tomography
Microbiology Seminar Series
- Date: May 14, 2018
- Time: 02:15 PM (Local Time Germany)
- Speaker: Dr. Ben Engel
- Max Planck Institute of Biochemistry, Department of Molecular Structural Biology, Martinsried
- Location: MPI for Terrestrial Microbiology
- Room: Lecture hall
- Host: Dr. Tobias Erb
- Contact: toerb@mpi-marburg.mpg.de
We are leveraging new advances in cryo-electron tomography (cryo-ET) to investigate macromolecular complexes within the native cellular environment. Thin slices of vitrified Chlamydomonas reinhardtii cells are prepared by cryo-focused ion beam (cryo-FIB) milling and then imaged by state-of-the-art cryo-ET. The resulting 3D views of cellular volumes have provided new insights into the molecular organization of organelles. In this talk, I will provide an overview of some of our recent studies, touching on proteasome-rich degradation centers, the nuclear pore complex, Golgi COPI coats, and the molecular organization of the chloroplast’s thylakoid membranes and pyrenoid.