3bpn: Difference between revisions

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[[Image:3bpn.jpg|left|200px]]
{{Seed}}
[[Image:3bpn.png|left|200px]]


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{{STRUCTURE_3bpn|  PDB=3bpn  |  SCENE=  }}  
{{STRUCTURE_3bpn|  PDB=3bpn  |  SCENE=  }}  


'''Crystal structure of the IL4-IL4R-IL13Ra ternary complex'''
===Crystal structure of the IL4-IL4R-IL13Ra ternary complex===




==Overview==
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Interleukin-4 and Interleukin-13 are cytokines critical to the development of T cell-mediated humoral immune responses, which are associated with allergy and asthma, and exert their actions through three different combinations of shared receptors. Here we present the crystal structures of the complete set of type I (IL-4Ralpha/gamma(c)/IL-4) and type II (IL-4Ralpha/IL-13Ralpha1/IL-4, IL-4Ralpha/IL-13Ralpha1/IL-13) ternary signaling complexes. The type I complex reveals a structural basis for gamma(c)'s ability to recognize six different gamma(c)-cytokines. The two type II complexes utilize an unusual top-mounted Ig-like domain on IL-13Ralpha1 for a novel mode of cytokine engagement that contributes to a reversal in the IL-4 versus IL-13 ternary complex assembly sequences, which are mediated through substantially different recognition chemistries. We also show that the type II receptor heterodimer signals with different potencies in response to IL-4 versus IL-13 and suggest that the extracellular cytokine-receptor interactions are modulating intracellular membrane-proximal signaling events.
The line below this paragraph, {{ABSTRACT_PUBMED_18243101}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_18243101}}


==About this Structure==
==About this Structure==
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[[Category: Secreted]]
[[Category: Secreted]]
[[Category: Transmembrane]]
[[Category: Transmembrane]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 20:58:48 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 23:31:24 2008''

Revision as of 20:31, 28 July 2008

File:3bpn.png

Template:STRUCTURE 3bpn

Crystal structure of the IL4-IL4R-IL13Ra ternary complex

Template:ABSTRACT PUBMED 18243101

About this Structure

3BPN is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Molecular and Structural Basis of Cytokine Receptor Pleiotropy in the Interleukin-4/13 System., Laporte SL, Juo ZS, Vaclavikova J, Colf LA, Qi X, Heller NM, Keegan AD, Garcia KC, Cell. 2008 Jan 25;132(2):259-272. PMID:18243101

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