1I3R	Immune System	date	Feb 15, 2001
title	Crystal Structure Of A Mutant Iek Class II Mhc Molecule
authors	J.W.Kappler, N.Wilson
compound		source
Molecule: H-2 Class II Histocompatibility Antigen, E-K Alph Chain: A, C, E, G Engineered: Yes Mutation: Yes		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Gene: Iek Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_vector_type: Baculovirus
Molecule: Fusion Protein Consisting Of Mhc E-Beta-K Precurs Glycine Rich Linker, And Hemoglobin Beta-2 Chain; Chain: B, D, F, H Engineered: Yes		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Gene: Iek Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_vector_type: Baculovirus
symmetry	Space Group: P 1 21 1	R_factor 0.229 R_Free 0.270
crystal cell	length a length b length c angle alpha angle beta angle gamma 117.059 58.020 143.222 90.00 93.24 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	NAG	enzyme
related structures	by homologous chain: 1JK8, 1KTD, 1T5W
Gene Ontology	Chain Function Process Component A, E, C, G F, B, H, D
Primary reference	Mutations changing the kinetics of class II MHC peptide exchange., Wilson N, Fremont D, Marrack P, Kappler J, Immunity 2001 May;14(5):513-22. PMID:11371354

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (278 Kb) [Save to disk] Biological Unit Coordinates (1i3r.pdb1.gz) 265 Kb Biological Unit Coordinates (1i3r.pdb2.gz) 70 Kb Biological Unit Coordinates (1i3r.pdb3.gz) 70 Kb Biological Unit Coordinates (1i3r.pdb4.gz) 70 Kb Biological Unit Coordinates (1i3r.pdb5.gz) 69 Kb Biological Unit Coordinates (1i3r.pdb6.gz) 135 Kb Biological Unit Coordinates (1i3r.pdb7.gz) 135 Kb LPC: Ligand-Protein Contacts for 1I3R CSU: Contacts of Structural Units for 1I3R Likely Quarternary Molecular Structure file(s) for 1I3R Retrieve 1I3R in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1I3R from S2C, [Save to disk]

View 1I3R 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 1I3R

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1I3R, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1i3ra2, region A:1-81 [Jmol] [rasmolscript] [script source]     - Domain d1i3ra1, region A:82-182 [Jmol] [rasmolscript] [script source]     - Domain d1i3rb2, region B:1-120 [Jmol] [rasmolscript] [script source]     - Domain d1i3rb1, region B:121-216 [Jmol] [rasmolscript] [script source]     - Domain d1i3rc2, region C:1-81 [Jmol] [rasmolscript] [script source]     - Domain d1i3rc1, region C:82-182 [Jmol] [rasmolscript] [script source]     - Domain d1i3rd2, region D:1-120 [Jmol] [rasmolscript] [script source]     - Domain d1i3rd1, region D:121-216 [Jmol] [rasmolscript] [script source]     - Domain d1i3re2, region E:1-81 [Jmol] [rasmolscript] [script source]     - Domain d1i3re1, region E:82-182 [Jmol] [rasmolscript] [script source]     - Domain d1i3rf2, region F:1-120 [Jmol] [rasmolscript] [script source]     - Domain d1i3rf1, region F:121-216 [Jmol] [rasmolscript] [script source]     - Domain d1i3rg2, region G:1-81 [Jmol] [rasmolscript] [script source]     - Domain d1i3rg1, region G:82-182 [Jmol] [rasmolscript] [script source]     - Domain d1i3rh2, region H:1-120 [Jmol] [rasmolscript] [script source]     - Domain d1i3rh1, region H:121-216 [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: [1i3r_D] [1i3r_C] [1i3r_A] [1i3r] [1i3r_F] [1i3r_E] [1i3r_G] [1i3r_B] [1i3r_H] SWISS-PROT database: [P04224] Domain organization of [HA22_MOUSE] by SWISSPFAM Domains found in 1I3R: [IGc1] [MHC_II_alpha] [MHC_II_beta ] by SMART

Other resources with information on 1I3R

Community annotation for 1I3R at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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