2NW2	Immune System	date	Nov 14, 2006
title	Crystal Structure Of Els4 Tcr At 1.4a
authors	F.E.Tynan, H.H.Reid, J.Rossjohn
compound		source
Molecule: Els4 Tcr Alpha Chain Chain: A Synonym: T-Cell Receptor, Alpha Chain Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet30
Molecule: Els4 Tcr Beta Chain Chain: B Synonym: T-Cell Receptor, Beta Chain Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet30
symmetry	Space Group: P 1 21 1	R_factor 0.192 R_Free 0.224
crystal cell	length a length b length c angle alpha angle beta angle gamma 46.564 84.163 59.270 90.00 107.34 90.00
method	X-Ray Diffraction	resolution	1.40 Å
note	2NW2 is a representative structure
Primary reference	A T cell receptor flattens a bulged antigenic peptide presented by a major histocompatibility complex class I molecule., Tynan FE, Reid HH, Kjer-Nielsen L, Miles JJ, Wilce MC, Kostenko L, Borg NA, Williamson NA, Beddoe T, Purcell AW, Burrows SR, McCluskey J, Rossjohn J, Nat Immunol. 2007 Mar;8(3):268-76. Epub 2007 Jan 28. PMID:17259989

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (87 Kb) [Save to disk] Biological Unit Coordinates (2nw2.pdb1.gz) 82 Kb CSU: Contacts of Structural Units for 2NW2 Likely Quarternary Molecular Structure file(s) for 2NW2 Structure Factors (583 Kb) Retrieve 2NW2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2NW2 from S2C, [Save to disk] Re-refined 2nw2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2NW2 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 2NW2

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 2NW2, from MSDmotif at EBI Fold representative 2nw2 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2nw2_A] [2nw2_B] SWISS-PROT database: [Q6P4G7] [P01850] Domain organization of [Q6P4G7_HUMAN] [TCB_HUMAN] by SWISSPFAM Domains found in 2NW2: [IG_like] [IGv ] by SMART Alignments of the sequence of 2NW2 with the sequences similar proteins can be viewed for 2NW2's classification [Q6P4G7_HUMAN] [TCB_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [Q6P4G7_HUMAN] [TCB_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 2NW2

Community annotation for 2NW2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

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