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          Institute: MPI für medizinische Forschung     Collection: jahrbuch_2011_archival     Display Documents



ID: 597750.0, MPI für medizinische Forschung / jahrbuch_2011_archival
Structure−factor analysis of femtosecond microdiffraction patterns from protein nanocrystals
Translation of Title:Structure−factor analysis of femtosecond microdiffraction patterns from protein nanocrystals
Authors:Kirian, Richard A.; White, Thomas A.; Holton, James M.; Chapman, Henry N.; Fromme, Petra; Barty, Anton; Lomb, Lukas; Aquila, Andrew; Maia, Filipe R. N. C.; Martin, Andrew V.; Fromme, Raimund; Wang, Xiaoyu; Hunter, Mark S.; Schmidt, Kevin E.; Spence, John C. H.
Language:English
Date of Publication (YYYY-MM-DD):2011-03-01
Title of Journal:Acta Crystallographica A
Journal Abbrev.:Acta Crystallogr. Sec. A
Volume:67
Issue / Number:2
Start Page:131
End Page:140
Review Status:Peer-review
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:A complete set of structure factors has been extracted from hundreds of thousands of femtosecond single−shot X−ray microdiffraction patterns taken from randomly oriented nanocrystals. The method of Monte Carlo integration over crystallite size and orientation was applied to experimental data from Photosystem I nanocrystals. This arrives at structure factors from many partial reflections without prior knowledge of the particle−size distribution. The data were collected at the Linac Coherent Light Source (the first hard−X−ray laser user facility), to which was fitted a hydrated protein nanocrystal injector jet, according to the method of serial crystallography. The data are single `still' diffraction snapshots, each from a different nanocrystal with sizes ranging between 100 nm and 2 µm, so the angular width of Bragg peaks was dominated by crystal−size effects. These results were compared with single−crystal data recorded from large crystals of Photosystem I at the Advanced Light Source and the quality of the data was found to be similar. The implications for improving the efficiency of data collection by allowing the use of very small crystals, for radiation−damage reduction and for time−resolved diffraction studies at room temperature are discussed
Free Keywords:nanocrystals; femtosecond diffraction; free−electron lasers; Monte Carlo methods; protein microdiffraction
External Publication Status:published
Document Type:Article
Communicated by:Wulf Kaiser
Affiliations:MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen
MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen/Coherent diffractive imaging
Identifiers:LOCALID:7753
URI:http%3A%2F%2Fjournals.iucr.org%2Fa%2Fissues%2F2011...
URI:http%3A%2F%2Fjournals.iucr.org%2Fa%2Fissues%2F2011...
URI:http%3A%2F%2Fscripts.iucr.org%2Fcgi-bin%2Fpaper%3F...
DOI:10.1107%2FS0108767310050981
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