Figure 6
Phased-dispersive difference Fourier maps around two Se sites calculated with the first (blue) and second (coral) halves of the MAD data and contoured at the 6σ level. The Se atoms are 4.4 Å apart. The electron density peaks are of similar height for site 171 (about 14σ), which suggests that it is not affected by radiation damage. For site 195, the second half-peak is slightly lower (8σ compared with 12σ for the peak for the first half of the data). This may be an indication that this site is affected by radiation. |