Structural Analysis of PGRP-SA

<div><p>(A and B) Molecular surfaces of (A) PGRP-SA and (B) PGRP-LB shown in similar orientations. Selected PGRP-SA residues on the putative PG docking groove are highlighted on the surface. Thr158 of PGRP-LB, the residue corresponding to Thr156 of PGRP-SA, is highlighted for reference.</p> <p>(C) Stick model of the PGRP-SA residues chosen for mutational analysis. Residues are colored with the same rainbow-coloring scheme as in <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0020277#pbio-0020277-g002" target="_blank">Figure 2</a>A. Figures were prepared with GRASP (<a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0020277#pbio-0020277-Nicholls1" target="_blank">Nicholls et al. 1991</a>), Bobscript, GL_RENDER, and POV-Ray.</p>