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Macromolecular powder diffraction
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, ch. 7.1, pp. 718-736 [ doi:10.1107/97809553602060000975 ]
... from proteins and protein complexes have such high potential are: (i) powders are easily prepared under a wide range of conditions ... experiments establish the validity of the methodology (Von Dreele, 2003 ; Margiolaki & Wright, 2008 ; Karavassili & Margiolaki, 2016 ). Although methods for phasing and structure solution ...

Related developments
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.9, pp. 731-732 [ doi:10.1107/97809553602060000975 ]
... 2011 ). They proved this concept with nanocrystals of photosystem I, one of the largest membrane-protein complexes. More than 3000000 ... a three-dimensional data set was assembled from individual photosystem I nanocrystals (from 200nm to 2Ám in size). The ... ray crystallography results related to light-induced changes of photosystem I-ferredoxin co-crystals observed at time delays of 5 ...

Rigid-body representation of amino-acid residues
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.8.2, p. 731 [ doi:10.1107/97809553602060000975 ]
... acids during the refinement procedure is illustrated in Fig. 7.1.15 (Margiolaki et al., 2013 ). Figure 7.1.14 | | Upper panel: Powder-diffraction ... ions, which are octahedrally coordinated by three HisB10 side chains (Margiolaki et al., 2013 ). Figure 7.1.15 | | Evolution of selected amino ... to the refined model at subsequent stages of our analysis (Margiolaki et al., 2013 ). References Bhat, T. N. (1988) ...
     [more results from section 7.1.8 in volume H]

Emerging powder phasing methods
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.7.3, pp. 728-729 [ doi:10.1107/97809553602060000975 ]
... M. T., Bryant, P., Fisher, S., Habash, J., Helliwell, M., Margiolaki, I., Kaenket, S., Watier, Y., Wright, J. & Yalamanchilli, S. (2010). ...
     [more results from section 7.1.7 in volume H]

Improvements in data quality via the use of multiple profiles
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.6, pp. 725-726 [ doi:10.1107/97809553602060000975 ]
... come from a single data set (Besnard et al., 2007 ; Margiolaki, Wright, Fitch et al., 2007 ) and are then useful for ... or structure refinements (Von Dreele, 2007 ; Basso et al., 2005 ; Margiolaki, Wright, Wilmanns et al., 2007 ). The unit-cell parameters ... Z. Kristallogr. 219, 791-802 Wright, J. P., Markvardsen, A. & Margiolaki, I. (2007 ). Likelihood methods with protein powder diffraction ...

Crystal screening
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.5, pp. 723-725 [ doi:10.1107/97809553602060000975 ]
... J. M., Mertens, P. P., Grimes, J. M. & Stuart, D. I. (2005). Crystal lattice as biological phenotype for insect viruses. ... 2375-2380.GoogleScholar Basso, S., Fitch, A. N., Fox, G. C., Margiolaki, I. & Wright, J. P. (2005). High-throughput phase-diagram ...

Cryo-cooling protein powder samples and microstructural effects
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.4, pp. 721-723 [ doi:10.1107/97809553602060000975 ]
... by collecting data while cooling and warming a powder sample (Margiolaki et al., 2004 , 2005 ). A phase transition in the ... light areas correspond to low and high electron density, respectively (Margiolaki et al., 2004 , 2005 ). In order to find an ... cryoprotectant agent molecules (PEG 400) as shown in Fig. 7.1.5 (Margiolaki et al., unpublished results). Figure 7.1.5 | | Upper left ...

Data collection
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.3, pp. 720-721 [ doi:10.1107/97809553602060000975 ]
... and SLS) as well as laboratory instrumentation have been discussed (Margiolaki, Wright, Fitch et al., 2007 ; Helliwell, 2012 ). Each instrumental ... soaked in solvents that have low and high electron density (Margiolaki & Wright, 2008 ). References Helliwell, J. R. (2012). The ... of its importance in crystallography. Crystallogr. Rev. 18, 33-93.GoogleScholar Margiolaki, I., Wright, J. P., Fitch, A. N., Fox, G. ...

Sample preparation and handling
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.2, pp. 718-720 [ doi:10.1107/97809553602060000975 ]
... several different polycrystalline protein samples, as shown in Fig. 7.1.1 (Margiolaki & Wright, 2008 ). The sample is preserved in an adequate ... enzymatic measurements on lysozyme powder. Nature, 284, 572-573.GoogleScholar Dobrianov, I., Kriminski, S., Caylor, C. L., Lemay, S. G., Kimmer, C. ... and cryogenic helium. J. Struct. Biol. 142, 77-87.GoogleScholar Kuntz, I. D. Jr & Kauzmann, W. (1974). Hydration of proteins ...

Introduction
Margiolaki, I.  International Tables for Crystallography (2019). Vol. H, Section 7.1.1, p. 718 [ doi:10.1107/97809553602060000975 ]
... experiments establish the validity of the methodology (Von Dreele, 2003 ; Margiolaki & Wright, 2008 ; Karavassili & Margiolaki, 2016 ). Although methods for phasing and structure solution are ... for the method in Section 7.1.10 . References Karavassili, F. & Margiolaki, I. (2016). Macromolecular powder diffraction: ready for genuine ...

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