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1ca4

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{{STRUCTURE_1ca4| PDB=1ca4 | SCENE= }}
{{STRUCTURE_1ca4| PDB=1ca4 | SCENE= }}
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'''STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 (TRAF2)'''
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===STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 (TRAF2)===
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==Overview==
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Tumour necrosis factor (TNF)-receptor-associated factors (TRAFs) form a family of cytoplasmic adapter proteins that mediate signal transduction from many members of the TNF-receptor superfamily and the interleukin-1 receptor. They are important in the regulation of cell survival and cell death. The carboxy-terminal region of TRAFs (the TRAF domain) is required for self-association and interaction with receptors. The domain contains a predicted coiled-coil region that is followed by a highly conserved TRAF-C domain. Here we report the crystal structure of the TRAF domain of human TRAF2, both alone and in complex with a peptide from TNF receptor-2 (TNF-R2). The structures reveal a trimeric self-association of the TRAF domain, which we confirm by studies in solution. The TRAF-C domain forms a new, eight-stranded antiparallel beta-sandwich structure. The TNF-R2 peptide binds to a conserved shallow surface depression on one TRAF-C domain and does not contact the other protomers of the trimer. The nature of the interaction indicates that an SXXE motif may be a TRAF2-binding consensus sequence. The trimeric structure of the TRAF domain provides an avidity-based explanation for the dependence of TRAF recruitment on the oligomerization of the receptors by their trimeric extracellular ligands.
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(as it appears on PubMed at http://www.pubmed.gov), where 10206649 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10206649}}
==About this Structure==
==About this Structure==
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[[Category: Tnf signaling]]
[[Category: Tnf signaling]]
[[Category: Traf]]
[[Category: Traf]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:30:58 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:26:27 2008''

Revision as of 17:26, 30 June 2008

Template:STRUCTURE 1ca4

STRUCTURE OF TNF RECEPTOR ASSOCIATED FACTOR 2 (TRAF2)

Template:ABSTRACT PUBMED 10206649

About this Structure

1CA4 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural basis for self-association and receptor recognition of human TRAF2., Park YC, Burkitt V, Villa AR, Tong L, Wu H, Nature. 1999 Apr 8;398(6727):533-8. PMID:10206649

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