2XN9	Immune System	date	Jul 31, 2010
title	Crystal Structure Of The Ternary Complex Between Human T Cel Receptor, Staphylococcal Enterotoxin H And Human Major Histocompatibility Complex Class II
authors	M.Saline, K.E.J.Rodstrom, G.Fischer, V.Y.Orekhov, B.G.Karlsson, K.Lindkvist-Petersson
compound		source
Molecule: T Cell Receptor Alpha Chain C Region Chain: A Fragment: Extracellular Domain, Residues 1-95 Engineered: Yes Mutation: Yes Other_details: Variable Domain Trav27 Fused To Constant Dom		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell: T Lymphocyte Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pgmt7
Molecule: T Cell Receptor Beta-1 Chain C Region Chain: B Fragment: Extracellular Domain, Residues 1-130 Engineered: Yes Mutation: Yes Other_details: Variable Domain Trbv19 Fused To Constant Dom		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell: T Lymphocyte Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pgmt7
Molecule: Enterotoxin H Chain: C Synonym: Seh, Staphylococcal Enterotoxin H Engineered: Yes		Organism_scientific: Staphylococcus Aureus Organism_taxid: 1280 Expression_system: Escherichia Coli Expression_system_taxid: 83333 Expression_system_strain: K-12 Expression_system_variant: Ul635
Molecule: Hla Class II Histocompatibility Antigen, Dr Alpha Chain: D Fragment: Extracellular Domain, Residues 26-207 Synonym: Major Histocompatibility Complex Class II Alpha, M II Antigen Dra Chain; Engineered: Yes Other_details: Chain Dr 0101		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell: Antigen Presenting Cell Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3)Plys Expression_system_plasmid: Plm1
Molecule: Major Histocompatibility Complex Class II Beta Ch Chain: E Fragment: Extracellular Domain, Residues 30-219 Synonym: Mhc Class II Antigen Drb1.1, Dr-1, Dr1 Engineered: Yes Other_details: Chain Drb1 0101		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell: Antigen Presenting Cell Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Plm1
Molecule: Hemagglutinin Chain: F Fragment: Residues 59-71 Synonym: Influenza Hemagglutinin Peptide Engineered: Yes		Synthetic: Yes Organism_scientific: Influenza A Virus Organism_taxid: 11320
symmetry	Space Group: C 1 2 1	R_factor 0.222 R_Free 0.272
crystal cell	length a length b length c angle alpha angle beta angle gamma 191.180 48.890 166.720 90.00 113.55 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	GOL, NA	enzyme
Gene Ontology	Chain Function Process Component C toxin activity D E
Primary reference	The structure of superantigen complexed with TCR and MHC reveals novel insights into superantigenic T cell activation., Saline M, Rodstrom KE, Fischer G, Orekhov VY, Karlsson BG, Lindkvist-Petersson K, Nat Commun. 2010 Nov 16;1:119. PMID:21081917

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (183 Kb) [Save to disk] Biological Unit Coordinates (2xn9.pdb1.gz) 174 Kb LPC: Ligand-Protein Contacts for 2XN9 CSU: Contacts of Structural Units for 2XN9 Structure Factors (3237 Kb) Retrieve 2XN9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2XN9 from S2C, [Save to disk] Re-refined 2xn9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2XN9 in 3D

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Visual 3D analysis of 2XN9

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Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2XN9, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2xn9] [2xn9_E] [2xn9_A] [2xn9_D] [2xn9_B] [2xn9_C] [2xn9_F] SWISS-PROT database: Domain organization of by SWISSPFAM Domains found in 2XN9: [IG_like] [IGc1] [IGv] [MHC_II_alpha] [MHC_II_beta ] by SMART

Other resources with information on 2XN9

Community annotation for 2XN9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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