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. 2012 Aug 18;68(Pt 9):1242–1252. doi: 10.1107/S0907444912026212

Figure 1.

Figure 1

S-SAD phasing of AF1382. (a) A stereoview of a section (residues 43–59) of the S-SAD-phased 2F o − F c experimental electron-density map contoured at 1σ generated by CCP4mg (McNicholas et al., 2011 ▶). The coordinates for residues 43–59 of the 2.3 Å resolution refined S-SAD model are also shown. The density in red corresponds to the anomalous electron density for SD of residue Met59 in the Bijvoet difference Fourier map using phases generated from the corresponding RESOLVE-fitted polyalanine model. (b) A plot of peak heights for the top ten peaks observed in the Bijvoet difference Fourier maps for the D1 (green), D2 (blue) and D1D2 (red) data sets. The maps were produced using phases generated from the corresponding RESOLVE model from SGXPro. Peaks are labeled corresponding to the residue contributing the S atom at that position. Note that the SD atom of Met91 is disordered. (c) A comparison of the anomalous scattering signal-to-noise index R as as a function of resolution for the D1, D2 and D1D2 data sets. (d) A comparison of the SHELXC anomalous scattering signal 〈d′′/sig〉 as a function of resolution for the D1, D2 and D1D2 data sets.