1I7T	Immune System	date	Mar 10, 2001
title	Crystal Structure Of Class I Mhc A2 In Complex With Peptide
authors	J.Busslep, R.Zhao, D.Loftus, E.Appella, E.J.Collins
compound		source
Molecule: Hla Class I Histocompatibility Antigen, A-2 Alpha Chain: A, D Fragment: Extracellular Domain, Residues 25-299 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hlaa Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plamid Expression_system_plasmid: Plm
Molecule: Beta-2-Microglobulin Chain: B, E Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: B2m Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Plm
Molecule: 9 Residue Peptide Chain: C, F Engineered: Yes		Synthetic: Yes Other_details: The Nine Residue Peptide Was Chemically Synt
symmetry	Space Group: P 1	R_factor 0.229 R_Free 0.285
crystal cell	length a length b length c angle alpha angle beta angle gamma 49.920 62.930 74.700 82.02 76.28 77.96
method	X-Ray Diffraction	resolution	2.80 Å
related structures	by homologous chain: 1DE4, 1GZP, 1KPR, 1QRN
Gene Ontology	Chain Function Process Component E, B cellular response to iron io...
Primary reference	T cell activity correlates with oligomeric peptide-major histocompatibility complex binding on T cell surface., Buslepp J, Zhao R, Donnini D, Loftus D, Saad M, Appella E, Collins EJ, J Biol Chem 2001 Dec 14;276(50):47320-8. Epub 2001 Oct 2. PMID:11584024

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (131 Kb) [Save to disk] Biological Unit Coordinates (1i7t.pdb1.gz) 63 Kb Biological Unit Coordinates (1i7t.pdb2.gz) 64 Kb CSU: Contacts of Structural Units for 1I7T Likely Quarternary Molecular Structure file(s) for 1I7T Structure Factors (211 Kb) Retrieve 1I7T in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1I7T from S2C, [Save to disk] Re-refined 1i7t structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1I7T 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 1I7T

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 1I7T, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1i7ta2, region A:1-181 [Jmol] [rasmolscript] [script source]     - Domain d1i7ta1, region A:182-275 [Jmol] [rasmolscript] [script source]     - Domain d1i7tb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1i7td2, region D:1-181 [Jmol] [rasmolscript] [script source]     - Domain d1i7td1, region D:182-275 [Jmol] [rasmolscript] [script source]     - Domain d1i7te_, region E [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1i7t_B] [1i7t_F] [1i7t_D] [1i7t_E] [1i7t_A] [1i7t] [1i7t_C] SWISS-PROT database: [P01892] [P61769] Domain organization of [1A02_HUMAN] [B2MG_HUMAN] by SWISSPFAM Domain found in 1I7T: [IGc1 ] by SMART

Other resources with information on 1I7T

Community annotation for 1I7T at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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