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![[Figure 6]](ba5183fig6mag.jpg)
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Figure 6
R factor (solid lines) and Rfree (dashed lines) after 40 REFMAC5 refinement iterations starting from the model 1ydz plotted against (a) the external restraints weight wext, (b) the Geman–McClure weight κ on a logarithmic scale and (c) the maximum external restraint length rmax. Lines correspond to the original model (blue), the model refined with local NCS restraints but without external restraints (red) and the model refined with local NCS restraints and α-helical restraints (green), external main-chain restraints from 2w72 (grey) and external main-chain and side-chain restraints from 2w72 (black). In each graph, the two parameters not being considered were fixed to the values that globally minimized Rfree, i.e. wext, κ and rmax are 8.9, 13 and 4.3, respectively, for α-helical restraints, 19, 5.9 and 4.4, respectively, for main-chain restraints and 4.2, 0.94 and 4.4, respectively, for main-chain and side-chain restraints. |
![[Figure 6]](ba5183fig6.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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