It has been a huge success so far and has already contributed to over 500 publications, including over 220 in high impact factor journals and 14 g-protein coupled receptors. The availability of such a specialised microfocus beamline for the European MX community has opened up new and exciting opportunities in X-ray crystallography, such as the possibility of collecting data from ~5 μm3 crystals. This is especially true of very weakly diffracting crystals because of the significantly reduced background achieved with a micro-focused X-ray beam. The success of ID23-2 has resulted in many new and existing synchrotrons building specialised micro-focus beamlines (e.g. Diamond and Petra III in Europe and the SSRL and APS in the US).
ID23-2 is a fixed energy (14.20 keV, 0.873 Å) beamline that produces a focused beam of less than 10 µm in diameter (FWHM) in order to collect data from small crystals as well as complete datasets from needle crystals and other radiation sensitive crystals. The installation of a high precision EMBL Grenoble-designed MD2M diffractometer containing an X-ray beam visualisation system and a specialised beamstop with cleaning aperture has facilitated the use of ID23-2 for data collection on microcrystals. Recently, the control electronics were upgraded and a PILATUS3 2M detector was installed. These developments have allowed the implementation of fast X-ray diffraction based routines, including automatic X-ray based centering, optimised helical and multi-crystal modes of data collection to help mitigate against radiation damage in microcrystals.
ID23-2 will be upgraded in 2016 to provide a small (1 μm2) and intense (1x1012 phs/s) X-ray beam to ensure it remains at the forefront of micro-crystallography. The upgrade includes the installation of a new high-precision diffractometer (MD3-Up) and new-generation sample changer to facilitate the scientific potential of the new X-ray beam characteristics. The beamline will also serve as an excellent test bench for the development of new instrumentation and methods in preparation for harnessing the unique scientific potential of the X-ray beam characteristics from the ESRF-EBS upgrade.
ID23-2 is run as a collaboration between the EMBL Grenoble Synchrotron Crystallography Team and the ESRF Structural Biology Group. See the ID23-2 webpage for more information on the technical details and the ESRF website for application details.
Flot, D., Mairs, T., Giraud, T., Guijarro, M., Lesourd, M., Rey, V., van Brussel, D., Morawe, C., Borel, C., Hignette, O., Chavanne, J., Nurizzo, D., McSweeney, S., Mitchell, E. (2010) J. Synchrotron Rad. 17, 107-118.
Perrakis, A., Cipriani, F., Castagna, J. C., Claustre, L., Burghammer, M., Riekel, C., Cusack, S. (1999) Acta Crystallogr. D Biol. Crystallogr. 55, 1765-1770.
Cusack S, Belrhali H, Bram A, Burghammer M, Perrakis A, Riekel C. (1998) Nat. Struct. Biol. Suppl, 634-637.
Neudegger, T., Verghese, J., Hayer-Hartl, M., Hartl, F. U., Bracher, A. (2016) Nat. Struct. Mol. Biol. (doi:10.1038/nsmb.3149)
Ma, P., Xue, Y., Coquelle, N., Haller, J. D., Yuwen, T., Ayala, I., Mikhailovskii, O., Willbold, D., Colletier, J. P. Skynnikov, N. R., Schanda, P. (2015) Nat. Commun. 6, 8361
Koch, S. C., Kuper, J., Gasteiger, K. L., Simon, N., Strasser, R., Eisen, D., Geiger, S., Schneider, S., Kisker, C., Carell, T. (2015) Proc. Natl. Acad. Sci., USA 112, 8272
Male, G., Von Appen, A., Glatt, S., Taylor, N. M. I., Cristovao, M., Groetsch, H., Beck, M., Muller, C. W. (2015) Nat. Commun. 6, 7387