Figure 2
(a) Cross-eyed stereo diagram of the bound Neu5Ac and the residues around it in the structure of Pm-SiaP. The electron-density map is a 2Fo − Fc map at 1.5 times the r.m.s. deviation. The map was calculated at the end of the refinement. (b) Cross-eyed stereo diagram of the bound Neu5Ac and the residues around it in the structure of Fn-SiaP. The electron-density map is a 2Fo − Fc map at 1.5 times the r.m.s. deviation. The map was calculated at the end of the refinement. (c) A stick diagram showing Neu5Ac and the conserved interacting residues of Hi-SiaP (magenta), Pm-SiaP (blue) and Fn-Siap (cyan). The numbering corresponds to Hi-SiaP. |