Concept
Single particle analysis
Related publications (109)
Microsecond Time-Resolved Cryo-Electron Microscopy
Recently, single-particle cryo-electron microscopy emerged as a technique capable of determining protein structures at near-atomic resolution and resolving protein dynamics with a temporal resolution ranging from second to milliseconds. This thesis describ ...
EPFL2024Shaped Laser Pulses for Microsecond Time-Resolved Cryo-EM: Outrunning Crystallization during Flash Melting
Marcel Drabbels, Constantin Richard Krüger, Nathan Junior Mowry
Water vitrifies if cooled at rates above 3 × 105 K/s. In contrast, when the resulting amorphous ice is flash heated, crystallization occurs even at a more than 10 times higher heating rate, as we have recently shown. This may present an issue for microseco ...
2024Near-atomic resolution reconstructions from in situ revitrified cryo samples
Marcel Drabbels, Ulrich Lorenz, Gabriele Bongiovanni, Jonathan Mark Voss, Oliver Florian Harder
A microsecond time-resolved version of cryo-electron microscopy (cryo-EM) has recently been introduced to enable observation of the fast conformational motions of proteins. The technique involves locally melting a cryo sample with a laser beam to allow the ...
2023Towards near-atomic resolution imaging of microsecond nanoscale dynamics
Time-resolved electron microscopy has made significant progress in recent years, with some groups now working on instruments that offer attosecond temporal resolution. While much of the research in the field revolves around the improvement of temporal reso ...
EPFL2023In Situ and Time-Resolved Transmission Electron Microscopy of Nanoscale Processes
Observing the fast dynamics of nanoscale systems is crucial in order to understand and ultimately control their behavior. Characterizing these dynamic processes requires techniques with atomic spatial resolution and a temporal resolution that matches the t ...
EPFL2023Micromechanics of oxide inclusions in ferrous alloys
Oxide inclusions are inevitably present in steel as a direct consequence of the steelmaking process; as a result, a cubic centimetre of modern steel will generally contain about a million of these hard and brittle micrometre-sized ceramic particles. Inclus ...
EPFL2023Structural Basis of the Allosteric Inhibition of Human ABCG2 by Nanobodies
Henning Paul-Julius Stahlberg, Dongchun Ni
ABCG2 is an ATP-binding cassette transporter that exports a wide range of xenobiotic compounds and has been recognized as a contributing factor for multidrug resistance in cancer cells. Substrate and inhibitor interactions with ABCG2 have been extensively ...
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD2023The tip protein PAAR is required for the function of the type VI secretion system
Bacteria are constantly competing to colonize crowded ecological niches, such as the human gut. The type VI secretion system (T6SS) is a critical bacterial weapon in this warfare. It resembles a crossbow with a poisoned arrow allowing bacteria to inject to ...
Washington2023Random conical tilt reconstruction without particle picking in cryo-electron microscopy
A method is proposed to reconstruct the 3D molecular structure from micrographs collected at just one sample tilt angle in the random conical tilt scheme in cryo-electron microscopy. The method uses autocorrelation analysis on the micrographs to estimate f ...
INT UNION CRYSTALLOGRAPHY2022Microsecond melting and revitrification of cryo samples: protein structure and beam-induced motion
Marcel Drabbels, Ulrich Lorenz, Pavel Olshin, Jonathan Mark Voss, Oliver Florian Harder
A novel approach to time-resolved cryo-electron microscopy (cryo-EM) has recently been introduced that involves melting a cryo sample with a laser beam to allow protein dynamics to briefly occur in the liquid, before trapping the particles in their transie ...
2022