Acoustic Injectors for Drop-On-Demand Serial Femtosecond Crystallography

Christian G. Roessler, Rakhi Agarwal, Marc Allaire, Roberto Alonso-Mori, Babak Andi, José F R Bachega, Martin Bommer, Aaron S. Brewster, Michael C. Browne, Ruchira Chatterjee, Eunsun Cho, Aina E. Cohen, Matthew Cowan, Sammy Datwani, Victor L. Davidson, Jim Defever, Brent Eaton, Richard Ellson, Yiping Feng, Lucien P. GhislainJames M. Glownia, Guangye Han, Johan Hattne, Julia Hellmich, Annie Héroux, Mohamed Ibrahim, Jan Kern, Anthony Kuczewski, Henrik T. Lemke, Pinghua Liu, Lars Majlof, William M. McClintock, Stuart Myers, Silke Nelsen, Joe Olechno, Allen M. Orville, Nicholas K. Sauter, Alexei S. Soares, S. Michael Soltis, Heng Song, Richard G. Stearns, Rosalie Tran, Yingssu Tsai, Monarin Uervirojnangkoorn, Carrie M. Wilmot, Vittal Yachandra, Junko Yano, Erik T. Yukl, Diling Zhu, Athina Zouni

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

X-ray free-electron lasers (XFELs) provide very intense X-ray pulses suitable for macromolecular crystallography. Each X-ray pulse typically lasts for tens of femtoseconds and the interval between pulses is many orders of magnitude longer. Here we describe two novel acoustic injection systems that use focused sound waves to eject picoliter to nanoliter crystal-containing droplets out of microplates and into the X-ray pulse from which diffraction data are collected. The on-demand droplet delivery is synchronized to the XFEL pulse scheme, resulting in X-ray pulses intersecting up to 88% of the droplets. We tested several types of samples in a range of crystallization conditions, wherein the overall crystal hit ratio (e.g., fraction of images with observable diffraction patterns) is a function of the microcrystal slurry concentration. We report crystal structures from lysozyme, thermolysin, and stachydrine demethylase (Stc2). Additional samples were screened to demonstrate that these methods can be applied to rare samples.

Original languageEnglish (US)
Pages (from-to)631-640
Number of pages10
JournalStructure
Volume24
Issue number4
DOIs
StatePublished - Apr 5 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.

Fingerprint

Dive into the research topics of 'Acoustic Injectors for Drop-On-Demand Serial Femtosecond Crystallography'. Together they form a unique fingerprint.

Cite this