2IAM	Immune System	date	Sep 08, 2006
title	Structural Basis For Recognition Of Mutant Self By A Tumor-S Mhc Class II-Restricted Tcr
authors	L.Deng, R.J.Langley, R.A.Mariuzza
compound		source
Molecule: Hla Class II Histocompatibility Antigen, Dr Alpha Chain: A Fragment: Residues 1-182 (26-207) Synonym: Mhc Class II Antigen Dra, Major Histocompatibility Class II Hla-Dr1 Alpha Chain; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hla-Dra Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
Molecule: Hla Class II Histocompatibility Antigen, Drb1-1 B Chain: B Fragment: Residues 1-190 (30-219) Synonym: Mhc Class I Antigen Drb11, Dr-1, Dr1, Major Histocompatibility Complex Class II Hla-Dr1 Beta Chain; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hla-Drb1 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
Molecule: 15-Mer Peptide From Triosephosphate Isomerase Chain: P Fragment: Residues 23-37 (22-36) Ec: 5.3.1.1 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Tpi1, Tpi Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
Molecule: Cd4+ T Cell Receptor E8 Alpha Chain Chain: C Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
Molecule: Cd4+ T Cell Receptor E8 Beta Chain Chain: D Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pt7-7
symmetry	Space Group: C 2 2 2	R_factor 0.207 R_Free 0.279
crystal cell	length a length b length c angle alpha angle beta angle gamma 86.391 270.542 97.396 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand		enzyme	Isomerase E.C.5.3.1.1 BRENDA
Gene Ontology	Chain Function Process Component A B
Primary reference	Structural basis for the recognition of mutant self by a tumor-specific, MHC class II-restricted T cell receptor., Deng L, Langley RJ, Brown PH, Xu G, Teng L, Wang Q, Gonzales MI, Callender GG, Nishimura MI, Topalian SL, Mariuzza RA, Nat Immunol. 2007 Apr;8(4):398-408. Epub 2007 Mar 4. PMID:17334368

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (137 Kb) [Save to disk] Biological Unit Coordinates (2iam.pdb1.gz) 131 Kb CSU: Contacts of Structural Units for 2IAM Likely Quarternary Molecular Structure file(s) for 2IAM Structure Factors (525 Kb) Retrieve 2IAM in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2IAM from S2C, [Save to disk] Re-refined 2iam structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2IAM in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 2IAM

Ramachandran plot from PDBSum

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 2IAM, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2iam_C] [2iam_A] [2iam_B] [2iam_P] [2iam_D] [2iam] SWISS-PROT database: [P04229] [P01903] [P01848] [P01850] [P60174] Domain organization of [2B11_HUMAN] [DRA_HUMAN] [TCA_HUMAN] [TCB_HUMAN] [TPIS_HUMAN] by SWISSPFAM Domains found in 2IAM: [IG] [IG_like] [IGc1] [MHC_II_alpha] [MHC_II_beta ] by SMART

Other resources with information on 2IAM

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

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