1esf

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (23:56, 20 November 2024) (edit) (undo)
 
(22 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1esf.gif|left|200px]]<br />
 
-
<applet load="1esf" size="450" color="white" frame="true" align="right" spinBox="true"
 
-
caption="1esf, resolution 1.9&Aring;" />
 
-
'''STAPHYLOCOCCAL ENTEROTOXIN A'''<br />
 
-
==Overview==
+
==STAPHYLOCOCCAL ENTEROTOXIN A==
-
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. ... [[http://ispc.weizmann.ac.il/pmbin/getpm?7628431 (full description)]]
+
<StructureSection load='1esf' size='340' side='right'caption='[[1esf]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 +
== Structural highlights ==
 +
<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>
 +
</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>
 +
<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>
 +
<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>
 +
</table>
 +
== Function ==
 +
[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.
 +
== Evolutionary Conservation ==
 +
[[Image:Consurf_key_small.gif|200px|right]]
 +
Check<jmol>
 +
<jmolCheckbox>
 +
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/es/1esf_consurf.spt"</scriptWhenChecked>
 +
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
 +
<text>to colour the structure by Evolutionary Conservation</text>
 +
</jmolCheckbox>
 +
</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].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
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.
-
==About this Structure==
+
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:7628431<ref>PMID:7628431</ref>
-
1ESF is a [[http://en.wikipedia.org/wiki/Single_protein Single protein]] structure of sequence from [[http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]] with CD as [[http://en.wikipedia.org/wiki/ligand ligand]]. Structure known Active Sites: CD1 and CD2. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1ESF OCA]].
+
-
==Reference==
+
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-
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://ispc.weizmann.ac.il//pmbin/getpm?pmid=7628431 7628431]
+
</div>
-
[[Category: Single protein]]
+
<div class="pdbe-citations 1esf" style="background-color:#fffaf0;"></div>
 +
== References ==
 +
<references/>
 +
__TOC__
 +
</StructureSection>
 +
[[Category: Large Structures]]
[[Category: Staphylococcus aureus]]
[[Category: Staphylococcus aureus]]
-
[[Category: Schad, E.M.]]
+
[[Category: Schad EM]]
-
[[Category: Svensson, L.A.]]
+
[[Category: Svensson LA]]
-
[[Category: CD]]
+
-
[[Category: enterotoxin]]
+
-
[[Category: staphylococcal enterotoxin type a]]
+
-
 
+
-
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Oct 30 13:48:18 2007''
+

Current revision

STAPHYLOCOCCAL ENTEROTOXIN A

PDB ID 1esf

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1esf"
Personal tools