1BX2	Immune System	date	Oct 12, 1998
title	Crystal Structure Of Hla-Dr2 (Dra0101,Drb11501) Complexed Peptide From Human Myelin Basic Protein
authors	K.J.Smith, J.Pyrdol, L.Gauthier, D.C.Wiley, K.Wucherpfennig
compound		source
Molecule: Protein (Hla-Dr2) Chain: A, D Fragment: Extracellular Domains Alpha 1, Alpha 2 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Unidentified Baculovirus Expression_system_taxid: 10469 Expression_system_cellular_location: Secreted Expression_system_vector_type: Virus Expression_system_vector: Baculovirus
Molecule: Protein (Hla-Dr2) Chain: B, E Fragment: Extracellular Domains Beta 1, Beta 2		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Protein (Hla-Dr2) Chain: C, F Fragment: Peptide From Human Myelin Basic Protein		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Other_details: Myelin Basic Protein Peptide Was Covalently The N-Terminus Of The Hla-Dr2 Beta Chain
symmetry	Space Group: P 43 21 2	R_factor 0.238 R_Free 0.266
crystal cell	length a length b length c angle alpha angle beta angle gamma 95.403 95.403 295.219 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	NAG	enzyme
related structures	by homologous chain: 1FYT, 1IAO, 1R5I
Primary reference	Crystal structure of HLA-DR2 (DRA*0101, DRB1*1501) complexed with a peptide from human myelin basic protein., Smith KJ, Pyrdol J, Gauthier L, Wiley DC, Wucherpfennig KW, J Exp Med 1998 Oct 19;188(8):1511-20. PMID:9782128

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (134 Kb) [Save to disk] Biological Unit Coordinates (1bx2.pdb1.gz) 128 Kb Biological Unit Coordinates (1bx2.pdb2.gz) 66 Kb Biological Unit Coordinates (1bx2.pdb3.gz) 65 Kb LPC: Ligand-Protein Contacts for 1BX2 CSU: Contacts of Structural Units for 1BX2 Likely Quarternary Molecular Structure file(s) for 1BX2 Retrieve 1BX2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1BX2 from S2C, [Save to disk]

View 1BX2 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 1BX2

Cartoon representation from PDB Cartoon Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1BX2, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1bx2a2, region A:2-81 [Jmol] [rasmolscript] [script source]     - Domain d1bx2a1, region A:82-181 [Jmol] [rasmolscript] [script source]     - Domain d1bx2b2, region B:3-92 [Jmol] [rasmolscript] [script source]     - Domain d1bx2b1, region B:93-193 [Jmol] [rasmolscript] [script source]     - Domain d1bx2d2, region D:2-81 [Jmol] [rasmolscript] [script source]     - Domain d1bx2d1, region D:82-181 [Jmol] [rasmolscript] [script source]     - Domain d1bx2e2, region E:3-92 [Jmol] [rasmolscript] [script source]     - Domain d1bx2e1, region E:93-191 [Jmol] [rasmolscript] [script source] Fold representative 1bx2 from FSSP and Dali (Families of Structurally Similar Proteins) 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: [1bx2_A] [1bx2_B] [1bx2_C] [1bx2_D] [1bx2_E] [1bx2_F] SWISS-PROT database: [P04229] [P01903] [P02686] Domain organization of [2B11_HUMAN] [DRA_HUMAN] [MBP_HUMAN] by SWISSPFAM Domains found in 1BX2: [IGc1] [MHC_II_alpha] [MHC_II_beta ] by SMART Alignments of the sequence of 1BX2 with the sequences similar proteins can be viewed for 1BX2's classification [2B11_HUMAN] [DRA_HUMAN] [MBP_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 [2B11_HUMAN] [DRA_HUMAN] [MBP_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1BX2

Community annotation for 1BX2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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