3QXA	Immune System	date	Mar 01, 2011
title	Hla-Dr1 Bound With Clip Peptide
authors	C.A.Painter, L.J.Stern
compound		source
Molecule: Hla Class II Histocompatibility Antigen, Dr Alpha Chain: A, D Fragment: Unp Residues 26-207 Synonym: Mhc Class II Antigen Dra Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hla-Dr1, Hla-Dra, Hla-Dra1 Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid
Molecule: Hla Class II Histocompatibility Antigen, Drb1-1 B Chain: B, E Fragment: Unp Residues 30-219 Synonym: Mhc Class II Antigen Drb11, Dr-1, Dr1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hla-Dr1, Hla-Drb1 Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid
Molecule: Hla Class II Histocompatibility Antigen Gamma Cha Peptide; Chain: C, F Fragment: Clip Region Synonym: Hla-Dr Antigens-Associated Invariant Chain, Ia Ant Associated Invariant Chain, II, P33; Engineered: Yes		Synthetic: Yes Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Other_details: This Chemically Synthesized Sequence Occurs In Humans
symmetry	Space Group: P 21 21 21	R_factor 0.193 R_Free 0.235
crystal cell	length a length b length c angle alpha angle beta angle gamma 65.296 95.887 151.573 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.71 Å
Gene Ontology	Chain Function Process Component A, D E, B
Primary reference	Conformational lability in the class II MHC 310 helix and adjacent extended strand dictate HLA-DM susceptibility and peptide exchange., Painter CA, Negroni MP, Kellersberger KA, Zavala-Ruiz Z, Evans JE, Stern LJ, Proc Natl Acad Sci U S A. 2011 Nov 14. PMID:22084083

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (255 Kb) [Save to disk] Biological Unit Coordinates (3qxa.pdb1.gz) 125 Kb Biological Unit Coordinates (3qxa.pdb2.gz) 126 Kb CSU: Contacts of Structural Units for 3QXA Structure Factors (794 Kb) Retrieve 3QXA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3QXA from S2C, [Save to disk] Re-refined 3qxa structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3QXA 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 3QXA

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 3QXA, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3qxa_C] [3qxa_A] [3qxa_B] [3qxa_D] [3qxa_E] [3qxa] [3qxa_F] SWISS-PROT database: Domain organization of by SWISSPFAM Domains found in 3QXA: [IGc1] [MHC_II_alpha] [MHC_II_beta ] by SMART

Other resources with information on 3QXA

Community annotation for 3QXA at PDBWiki (http://pdbwiki.org)

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