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2021/06/7

Super-resolution microscopy for structural cell biology

Jonas Ries
EMBL, Heidelberg
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ABSTRACT:

Superresolution microscopy, such as single-molecule localization microscopy (SMLM), is becoming a key technique for structural cell biology, ideally complementing electron microscopy.

I will discuss projects in my group in which we contributed to this aim to develop technologies to image the structure and dynamics of molecular machines in cells. We a) pushed the 3D resolution in multi-color towards the nanometer scale, b) increased throughput and imaging speed of the notoriously slow SMLM, c) developed reference standards for quality control and for counting of protein copy numbers in complexes and d) developed software to extract specific and quantitative information from SMLM data for biological interpretation. I will then show, how these new technologies enabled us to gain mechanistic insights into the structural organization of a complex protein machine, namely the machinery involved in clathrin-mediated endocytosis. We developed a high-throughput superresolution microscope to reconstruct the nanoscale structural organization of 23 endocytic proteins from over 100,000 endocytic sites in yeast. This allowed us to visualize where individual proteins are localized within the machinery throughout the endocytic process and resulted in a model of how the force is produced to pull in the membrane and form a vesicle. In mammalian cells, we could address a long-standing question how the clathrin coat is formed and the membranes are deformed during vesicle formation.

Our last Webinars

2022/06/30

Practical aspects of Single Molecule Localization Microscopy

Prof. Christian Soeller & Dr. Alex Clowsley
University of Bern, Switzerland
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2022/06/3

Correlative imaging using ions and single molecules

Prof. Aleksandra Radenovic
EPFL
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2021/07/19

Decifering organelles and synaptic molecular assemblies using quantitative super-resolution 3D microscopy

Lydia Danglot
IPNP
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