View source for 3anz


==Crystal Structure of alpha-hemolysin==
<StructureSection load='3anz' size='340' side='right'caption='[[3anz]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3anz]] is a 28 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_Mu50 Staphylococcus aureus subsp. aureus Mu50]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ANZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ANZ 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]] 2.303&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</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=3anz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3anz OCA], [https://pdbe.org/3anz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3anz RCSB], [https://www.ebi.ac.uk/pdbsum/3anz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3anz ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A0H3JRX7_STAAM A0A0H3JRX7_STAAM] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Staphylococcal alpha-hemolysin is expressed as a water-soluble monomeric protein and assembles on membranes to form a heptameric pore structure. The heptameric pore structure of alpha-hemolysin can be prepared from monomer in vitro only in the presence of deoxycholate detergent micelles, artificially constructed phospholipid bilayers, or erythrocytes. Here, we succeeded in preparing crystals of the heptameric form of alpha-hemolysin without any detergent but with 2-methyl-2,4-pentanediol (MPD), and determined its structure. The structure of the heptameric pore was similar to that reported previously. In the structure, two molecules of MPD were bound around Trp179, around which phospholipid head groups were bound in the heptameric pore structure reported previously. Size exclusion chromatography showed that alpha-hemolysin did not assemble spontaneously even when stored for 1 year. SDS-PAGE analysis revealed that, among the compounds in the crystallizing buffer, MPD could induce heptamer formation. The concentration of MPD that most efficiently induced oligomerization was between 10 and 30%. Based on these observations, we propose MPD as a reagent that can facilitate heptameric pore formation of alpha-hemolysin without membrane binding.

2-Methyl-2,4-pentanediol induces spontaneous assembly of staphylococcal alpha-hemolysin into heptameric pore structure.,Tanaka Y, Hirano N, Kaneko J, Kamio Y, Yao M, Tanaka I Protein Sci. 2011 Feb;20(2):448-56. doi: 10.1002/pro.579. PMID:21280135<ref>PMID:21280135</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3anz" style="background-color:#fffaf0;"></div>

==See Also==
*[[Hemolysin 3D structures|Hemolysin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Staphylococcus aureus subsp. aureus Mu50]]
[[Category: Kawauchi H]]
[[Category: Tanaka I]]
[[Category: Tanaka Y]]
[[Category: Yamashita K]]
[[Category: Yao M]]