2F54	Immune System	date	Nov 25, 2005
title	Directed Evolution Of Human T Cell Receptor Cdr2 Residues By Display Dramatically Enhances Affinity For Cognate Peptide- Without Increasing Apparent Cross-Reactivity
authors	P.J.Rizkallah, B.K.Jakobsen, S.M.Dunn, M.Sami
compound		source
Molecule: Hla Class I Histocompatibility Antigen Chain: A, F Fragment: Alpha 1, Alpha 2, Alpha 3, Residues 25-298 Synonym: Mhc Class I Antigen A2 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hla-A, Hlaa Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pex078
Molecule: Beta-2-Microglobulin Chain: B, G Fragment: Beta-2-Microglobulin, Residues 21-119 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: B2m Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pex050
Molecule: Cancertestis Antigen 1b Chain: C, H Fragment: Residues 157-165 Synonym: L Antigen Family Member 2, Lage-2 Protein, Autoimm Cancertestis Antigen Ny-Eso-1; Engineered: Yes Mutation: Yes		Synthetic: Yes Other_details: This Sequence Occurs Naturally In Homo Sapie (Humans);
Molecule: T-Cell Receptor Alpha Chain Chain: D, K 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: Pgmt7
Molecule: T-Cell Receptor Beta Chain Chain: E, L 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: Pgmt7
symmetry	Space Group: P 1 21 1	R_factor 0.221 R_Free 0.286
crystal cell	length a length b length c angle alpha angle beta angle gamma 120.020 53.592 152.831 90.00 96.04 90.00
method	X-Ray Diffraction	resolution	2.70 Å
Gene Ontology	Chain Function Process Component G, B cellular response to iron io...
Primary reference	Directed evolution of human T cell receptor CDR2 residues by phage display dramatically enhances affinity for cognate peptide-MHC without increasing apparent cross-reactivity., Dunn SM, Rizkallah PJ, Baston E, Mahon T, Cameron B, Moysey R, Gao F, Sami M, Boulter J, Li Y, Jakobsen BK, Protein Sci. 2006 Apr;15(4):710-21. PMID:16600963

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (270 Kb) [Save to disk] Biological Unit Coordinates (2f54.pdb1.gz) 132 Kb Biological Unit Coordinates (2f54.pdb2.gz) 134 Kb CSU: Contacts of Structural Units for 2F54 Likely Quarternary Molecular Structure file(s) for 2F54 Structure Factors (409 Kb) Retrieve 2F54 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2F54 from S2C, [Save to disk] Re-refined 2f54 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2F54 in 3D

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Visual 3D analysis of 2F54

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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 2F54, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2f54_G] [2f54_L] [2f54_H] [2f54_F] [2f54_E] [2f54] [2f54_A] [2f54_C] [2f54_K] [2f54_D] [2f54_B] SWISS-PROT database: [P01892] [P61769] [P78358] [P01848] [P01850] Domain organization of [1A02_HUMAN] [B2MG_HUMAN] [CTG1B_HUMAN] [TCA_HUMAN] [TCB_HUMAN] by SWISSPFAM Domains found in 2F54: [IG_like] [IGc1] [IGv ] by SMART

Other resources with information on 2F54

Community annotation for 2F54 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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