Download MendeleyCrystal structure of a soluble decoy receptor IL-22BP bound to interleukin-22
de Moura, P.R., Watanabe, L., Bleicher, L., Colau, D., Dumoutier, L., Lemaire, M.M., Renauld, J.-C., Polikarpov, I.(2009) FEBS Lett 583: 1072-1077
- PubMed: 19285080
- DOI: https://doi.org/10.1016/j.febslet.2009.03.006
- Primary Citation of Related Structures:
3G9V - PubMed Abstract:
Interleukin-22 (IL-22) plays an important role in the regulation of immune and inflammatory responses in mammals. The IL-22 binding protein (IL-22BP), a soluble receptor that specifically binds IL-22, prevents the IL-22/interleukin-22 receptor 1 (IL-22R1)/interleukin-10 receptor 2 (IL-10R2) complex assembly and blocks IL-22 biological activity. Here we present the crystal structure of the IL-22/IL-22BP complex at 2.75 A resolution. The structure reveals IL-22BP residues critical for IL-22 binding, which were confirmed by site-directed mutagenesis and functional studies. Comparison of IL-22/IL-22BP and IL-22/IL-22R1 crystal structures shows that both receptors display an overlapping IL-22 binding surface, which is consistent with the inhibitory role played by IL-22 binding protein.
Organizational Affiliation:
Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos 13560-970, SP, Brazil.
