Figure 2
The calculated and observed 〈ΔF±〉/〈F〉 ratio as a function of resolution for (a) Cbm27(i), (b) ProtE and (c) Cel5a. Cbm27(i) and ProtE were successfully phased; although the high-resolution differences were overestimated, they provided some phase information which was then improved by density modification. The very weak signal from the S atoms in Cel5a was not sufficient to trigger useful phasing. |