Figure 5 - full size

 

Figure 5.
Figure 5. Model of residues Cys 44 and Ala 45 superimposed with A-weighted Fo-Fc map with omitted hydrogen atoms (a), contoured magenta at at 0.25 e/Å^3 (2.5 ) showing the position of the hydrogen atoms and the bond densities. Model of residues Ser 76 and Lys 77(b), viewed down the C N peptide bond showing the angle of -167.3° stabilized by an H-bond.

The above figure is reprinted by permission from John Wiley & Sons, Inc.: Proteins (2004, 55, 792-804) copyright 2004.