Figure 1 - full size

 

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

The above figure is reprinted from an Open Access publication published by Elsevier: J Mol Biol (2007, 365, 825-834) copyright 2007.