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From Proteopedia
Crystal structure of a soluble decoy receptor IL-22BP bound to interleukin-22
Structural highlights
FunctionI22R2_HUMAN Isoform 2 is a receptor for IL22. Binds to IL22, prevents interaction with the functional IL-22R complex and blocks the activity of IL22 (in vitro). May play an important role as an IL22 antagonist in the regulation of inflammatory responses.[1] [2] [3] Isoform 1 may play a role in establishing and maintaining successful pregnancy.[4] [5] [6] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedInterleukin-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. Crystal structure of a soluble decoy receptor IL-22BP bound to interleukin-22.,de Moura PR, Watanabe L, Bleicher L, Colau D, Dumoutier L, Lemaire MM, Renauld JC, Polikarpov I FEBS Lett. 2009 Apr 2;583(7):1072-7. Epub 2009 Mar 11. PMID:19285080[7] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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