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1esf

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[[Image:1esf.gif|left|200px]]
 
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{{Structure
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==STAPHYLOCOCCAL ENTEROTOXIN A==
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|PDB= 1esf |SIZE=350|CAPTION= <scene name='initialview01'>1esf</scene>, resolution 1.9&Aring;
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<StructureSection load='1esf' size='340' side='right'caption='[[1esf]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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|SITE= <scene name='pdbsite=CD1:Cd+2++Binding+Site+I'>CD1</scene> and <scene name='pdbsite=CD2:Cd+2++Binding+Site+II'>CD2</scene>
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>
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<table><tr><td colspan='2'>[[1esf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ESF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ESF FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CD:CADMIUM+ION'>CD</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1esf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1esf OCA], [https://pdbe.org/1esf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1esf RCSB], [https://www.ebi.ac.uk/pdbsum/1esf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1esf ProSAT]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1esf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1esf OCA], [http://www.ebi.ac.uk/pdbsum/1esf PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1esf RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/ETXA_STAAU ETXA_STAAU] Staphylococcal enterotoxins cause the intoxication staphylococcal food poisoning syndrome. The illness is characterized by high fever, hypotension, diarrhea, shock, and in some cases death.
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== Evolutionary Conservation ==
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'''STAPHYLOCOCCAL ENTEROTOXIN A'''
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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==Overview==
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/es/1esf_consurf.spt"</scriptWhenChecked>
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Staphylococcal enterotoxins are prototype superantigens characterized by their ability to bind to major histocompatibility complex (MHC) class II molecules and subsequently activate a large fraction of T-lymphocytes. The crystal structure of staphylococcal enterotoxin type A (SEA), a 27 kDa monomeric protein, was determined to 1.9 A resolution with an R-factor of 19.9% by multiple isomorphous replacement. SEA is a two domain protein composed of a beta-barrel and a beta-grasp motif demonstrating the same general structure as staphylococcal enterotoxins SEB and TSST-1. Unique for SEA, however, is a Zn2+ coordination site involved in MHC class II binding. Four amino acids including Ser1, His187, His225 and Asp227 were found to be involved in direct coordination of the metal ion. SEA is the first Zn2+ binding enterotoxin that has been structurally determined.
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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==About this Structure==
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</jmolCheckbox>
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1ESF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ESF OCA].
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1esf ConSurf].
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<div style="clear:both"></div>
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==Reference==
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__TOC__
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Crystal structure of the superantigen staphylococcal enterotoxin type A., Schad EM, Zaitseva I, Zaitsev VN, Dohlsten M, Kalland T, Schlievert PM, Ohlendorf DH, Svensson LA, EMBO J. 1995 Jul 17;14(14):3292-301. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7628431 7628431]
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</StructureSection>
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[[Category: Single protein]]
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[[Category: Large Structures]]
[[Category: Staphylococcus aureus]]
[[Category: Staphylococcus aureus]]
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[[Category: Schad, E M.]]
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[[Category: Schad EM]]
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[[Category: Svensson, L A.]]
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[[Category: Svensson LA]]
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[[Category: enterotoxin]]
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[[Category: staphylococcal enterotoxin type some]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:08:41 2008''
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Current revision

STAPHYLOCOCCAL ENTEROTOXIN A

PDB ID 1esf

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