Nature Communications (Jul 2021)

An on-demand, drop-on-drop method for studying enzyme catalysis by serial crystallography

  • Agata Butryn,
  • Philipp S. Simon,
  • Pierre Aller,
  • Philip Hinchliffe,
  • Ramzi N. Massad,
  • Gabriel Leen,
  • Catherine L. Tooke,
  • Isabel Bogacz,
  • In-Sik Kim,
  • Asmit Bhowmick,
  • Aaron S. Brewster,
  • Nicholas E. Devenish,
  • Jürgen Brem,
  • Jos J. A. G. Kamps,
  • Pauline A. Lang,
  • Patrick Rabe,
  • Danny Axford,
  • John H. Beale,
  • Bradley Davy,
  • Ali Ebrahim,
  • Julien Orlans,
  • Selina L. S. Storm,
  • Tiankun Zhou,
  • Shigeki Owada,
  • Rie Tanaka,
  • Kensuke Tono,
  • Gwyndaf Evans,
  • Robin L. Owen,
  • Frances A. Houle,
  • Nicholas K. Sauter,
  • Christopher J. Schofield,
  • James Spencer,
  • Vittal K. Yachandra,
  • Junko Yano,
  • Jan F. Kern,
  • Allen M. Orville

DOI
https://doi.org/10.1038/s41467-021-24757-7
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 7

Abstract

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Currently many of the time resolved serial femtosecond (SFX) crystallography experiments are done with light driven protein systems, whereas the reaction initiation for non-light triggered enzymes remains a major bottle neck. Here, the authors present an expanded Drop-on-Tape system, where picoliter-sized droplets of a substrate or inhibitor are turbulently mixed with nanoliter sized droplets of microcrystal slurries, and they use it for time-resolved SFX measurements of inhibitor binding to lysozyme and secondly, binding of a β-lactam antibiotic to a bacterial serine β-lactamase.