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Figure 4
Zn—Sγ distance (top) and Sγ—Zn—Sγ angle (bottom) distributions as a function of the number of cysteines and histidines in ZnCysxHisy complexes determined at 1.6 Å resolution or better. The contours of the violin plots are kernel density estimates and the box plots are shown as in Fig. 2[link]. The light grey background areas show one standard deviation around the refinement targets for the Zn—Sγ distance (2.340 ± 0.020 Å) and the Sγ—Zn—Sγ angle (109.5 ± 3.0°). The difference between the types of ZnCysxHisy complexes is significant (see Table 1[link]). When Zn is coordinated by Nδ in ZnCys3His1 complexes, the Sγ—Zn—Sγ angle distribution is somewhat bimodal and partly depends on the rotameric state and backbone conformation of the cysteines.

Journal logoSTRUCTURAL
ISSN: 2059-7983
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