Figure 5 - full size

 

Figure 5.
Figure 5. Surface Representations Showing the Site III Interfaces of LIF OSM, IL-6, and Viral IL-6The site III LIF and OSM, which engage LIF receptor (LIFR) is defined by both a conserved phenylalanine and a lysine residue. The structural paradigm for site III has been established with hIL-6 (Boulanger et al., 2003) and viral IL-6 (Chow et al., 2001), where the hot spot residue is a single tryptophan that engages the Ig domain of gp130.

The above figure is reprinted by permission from Cell Press: Mol Cell (2003, 12, 577-589) copyright 2003.