2ntt
From Proteopedia
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|PDB= 2ntt |SIZE=350|CAPTION= <scene name='initialview01'>2ntt</scene>, resolution 1.561Å | |PDB= 2ntt |SIZE=350|CAPTION= <scene name='initialview01'>2ntt</scene>, resolution 1.561Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> | + | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= sek ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | |GENE= sek ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1280 Staphylococcus aureus]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[2nts|2NTS]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ntt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ntt OCA], [http://www.ebi.ac.uk/pdbsum/2ntt PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2ntt RCSB]</span> | ||
}} | }} | ||
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[[Category: Sundberg, E J.]] | [[Category: Sundberg, E J.]] | ||
[[Category: Varma, A K.]] | [[Category: Varma, A K.]] | ||
| - | [[Category: | + | [[Category: superantigen]] |
| - | [[Category: | + | [[Category: t cell receptor]] |
| - | + | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:08:15 2008'' |
Revision as of 01:08, 31 March 2008
| |||||||
| , resolution 1.561Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | sek (Staphylococcus aureus) | ||||||
| Related: | 2NTS
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of SEK
Overview
Superantigens (SAGs) interact with host immune receptors to induce a massive release of inflammatory cytokines that can lead to toxic shock syndrome and death. Bacterial SAGs can be classified into five distinct evolutionary groups. Group V SAGs are characterized by the alpha3-beta8 loop, a unique approximately 15 amino acid residue extension that is required for optimal T cell activation. Here, we report the X-ray crystal structures of the group V SAG staphylococcal enterotoxin K (SEK) alone and in complex with the TCR hVbeta5.1 domain. SEK adopts a unique TCR binding orientation relative to other SAG-TCR complexes, which results in the alpha3-beta8 loop contacting the apical loop of framework region 4, thereby extending the known TCR recognition site of SAGs. These interactions are absolutely required for TCR binding and T cell activation by SEK, and dictate the TCR Vbeta domain specificity of SEK and other group V SAGs.
About this Structure
2NTT is a Single protein structure of sequence from Staphylococcus aureus. Full crystallographic information is available from OCA.
Reference
A novel loop domain in superantigens extends their T cell receptor recognition site., Gunther S, Varma AK, Moza B, Kasper KJ, Wyatt AW, Zhu P, Rahman AK, Li Y, Mariuzza RA, McCormick JK, Sundberg EJ, J Mol Biol. 2007 Aug 3;371(1):210-21. Epub 2007 May 18. PMID:17560605
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