IOTA is a user-friendly front end for dials.stills_process, a serial
diffraction data processing program. IOTA is comprised of three main modules:
- Raw image import, pre-processing and triage
- Image indexing, lattice model refinement, and integration using
dials.stills_process - Analysis of the integrated dataset
IOTA can be run as a GUI or from the command-line; scripts can be used for both, interchangeably. The GUI has the advantage of displaying useful statistics; it can also be run in "monitor mode" during live data collection, during which the program will wait for new images to be written into the specified input folder. The command-line mode is useful if the program is run remotely on servers that do not, for some reason, support graphics.
Please note that IOTA is a front-end for other processing software. Therefore, the preferred construction for citation should be something like "data were processed with IOTA [1] using serial diffraction data reduction algorithms implemented in DIALS [2, 3]".
[1] IOTA: integration optimization, triage and analysis tool for the processing of XFEL diffraction images. Lyubimov AY, Uervirojnangkoorn M, Zeldin OB, Brewster AS, Murray TD, Sauter NK, Berger JM, Weis WI, Brunger AT. J Appl Crystallogr. 2016 May 11;49(Pt 3):1057-1064
[2] DIALS: implementation and evaluation of a new integration package. Winter, G., Waterman, D. G., Parkhurst, J. M., Brewster, A. S., Gildea, R. J., Gerstel, M., Fuentes-Montero, L., Vollmar, M., Michels-Clark, T., Young, I. D., Sauter, N. K. & Evans, G. (2018). Acta Cryst. D74, 85-97.
[3] Improving signal strength in serial crystallography with DIALS geometry refinement. Brewster, A. S., Waterman, D. G., Parkhurst, J. M., Gildea, R. J., Young, I. D., O'Riordan, L. J., Yano, J., Winter, G., Evans, G. & Sauter, N. K. (2018). Acta Cryst. D74, 877-894.
For an example of how the IOTA/PRIME pipeline was used to solve a structure from a small dataset, see
[4] Advances in X-ray free electron laser (XFEL) diffraction data processing applied to the crystal structure of the synaptotagmin-1 / SNARE complex. Lyubimov AY, Uervirojnangkoorn M, Zeldin OB, Zhou Q, Zhao M, Brewster AS, Michels-Clark T, Holton JM, Sauter NK, Weis WI, Brunger AT. Elife. 2016 Oct 12;5.
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Work supported by the U.S. D.O.E under contract DE-AC03-76SF00515; and the National Institutes of Health, National Center for Research Resources, grant 2P41RR01209.