1HXY	Immune System Toxin	date	Jan 17, 2001
title	Crystal Structure Of Staphylococcal Enterotoxin H In Complex With Human Mhc Class II
authors	K.Petersson, M.Hakansson, H.Nilsson, G.Forsberg, L.A.Svensson, A.Liljas, B.Walse
compound		source
Molecule: Hla Class II Histocompatibility Antigen, Dr Alpha Chain; Chain: A Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Plm1
Molecule: Hla Class II Histocompatibility Antigen, Dr-1 Beta Chain; Chain: B Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Plm1
Molecule: Hemagglutinin Chain: C Engineered: Yes		Synthetic: Yes Other_details: This Peptide Was Chemically Synthesized. The Sequence Of The Peptide Is Naturally Found In Influenza A Virus.;
Molecule: Enterotoxin H Chain: D Engineered: Yes		Organism_scientific: Staphylococcus Aureus Organism_taxid: 1280 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Ul635 Expression_system_vector_type: Plasmid Expression_system_plasmid: Plr16
symmetry	Space Group: C 1 2 1	R_factor 0.202 R_Free 0.258
crystal cell	length a length b length c angle alpha angle beta angle gamma 123.624 122.843 48.513 90.00 100.13 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	ZN	enzyme
related structures	by homologous chain: 1ES0, 1F77, 1FYT, 1JWS
Gene Ontology	Chain Function Process Component D metal ion binding pathogenesis extracellular region
Primary reference	Crystal structure of a superantigen bound to MHC class II displays zinc and peptide dependence., Petersson K, Hakansson M, Nilsson H, Forsberg G, Svensson LA, Liljas A, Walse B, EMBO J 2001 Jul 2;20(13):3306-12. PMID:11432818

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (103 Kb) [Save to disk] Biological Unit Coordinates (1hxy.pdb1.gz) 99 Kb LPC: Ligand-Protein Contacts for 1HXY CSU: Contacts of Structural Units for 1HXY Likely Quarternary Molecular Structure file(s) for 1HXY Structure Factors (177 Kb) Retrieve 1HXY in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HXY from S2C, [Save to disk] Re-refined 1hxy structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1HXY 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 1HXY

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1HXY, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1hxya2, region A:3-81 [Jmol] [rasmolscript] [script source]     - Domain d1hxya1, region A:82-182 [Jmol] [rasmolscript] [script source]     - Domain d1hxyb2, region B:3-92 [Jmol] [rasmolscript] [script source]     - Domain d1hxyb1, region B:93-190 [Jmol] [rasmolscript] [script source]     - Domain d1hxyd2, region D:102-213 [Jmol] [rasmolscript] [script source]     - Domain d1hxyd1, region D:2-101 [Jmol] [rasmolscript] [script source] Fold representative 1hxy 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: [1hxy_A] [1hxy_B] [1hxy_C] [1hxy_D] SWISS-PROT database: [P04229] [P01903] [P0A0M0] Domain organization of [2B11_HUMAN] [DRA_HUMAN] [ETXH_STAAU] by SWISSPFAM Domains found in 1HXY: [IGc1] [MHC_II_alpha] [MHC_II_beta ] by SMART Alignments of the sequence of 1HXY with the sequences similar proteins can be viewed for 1HXY's classification [2B11_HUMAN] [DRA_HUMAN] [ETXH_STAAU] 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] [ETXH_STAAU] at ProtoMap. Click on the Cluster number.

Other resources with information on 1HXY

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

Movements, Movies and Images

Images from IMB Jena Image Library of Biological Macromolecules.

You may enter another PDB ID code

Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]

---

OCA© by Jaime Prilusky, 1996-2010 Bioinformatics Unit Weizmann Institute of Science

---