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Figure 1.
Figure 1. The HlyIIR structure. (a) Electron density
corresponding to one of the protein helices (α1) calculated
with maximum likelihood weighted coefficients 2|F[o]|–|F[c]|
and contoured at 1.25σ. (b) and (c) Ribbon diagrams of HlyIIR.
Monomer (b) is rainbow-coloured with its N-terminal in red and
C-terminal in blue. Dotted line indicates the disordered
segment, which was not modelled. The biological dimer (c) is
generated by the crystallographic 2-fold axis. The large
internal cavity (yellow) is drawn along the van der Waals radii
of cavity-forming residues. The cavity surface was calculated by
SURFNET.^33 This Figure and Figure 3 and Figure 4 were prepared
using CCP4MG.^34
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