6sig

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[6sig]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_epidermidis Staphylococcus epidermidis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SIG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SIG FirstGlance]. <br>
<table><tr><td colspan='2'>[[6sig]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_epidermidis Staphylococcus epidermidis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SIG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SIG FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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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]] 1.58&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=6sig FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6sig OCA], [https://pdbe.org/6sig PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6sig RCSB], [https://www.ebi.ac.uk/pdbsum/6sig PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6sig ProSAT]</span></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=6sig FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6sig OCA], [https://pdbe.org/6sig PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6sig RCSB], [https://www.ebi.ac.uk/pdbsum/6sig PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6sig ProSAT]</span></td></tr>
</table>
</table>
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== Function ==
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[https://www.uniprot.org/uniprot/H9BG66_STAEP H9BG66_STAEP]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Bacteriocins are a distinct family of antimicrobial proteins postulated to porate bacterial membranes. However, direct experimental evidence of pore formation by these proteins is lacking. Here we report a multi-mode poration mechanism induced by four-helix bacteriocins, epidermicin NI01 and aureocin A53. Using a combination of crystallography, spectroscopy, bioassays, and nanoscale imaging, we established that individual two-helix segments of epidermicin retain antibacterial activity but each of these segments adopts a particular poration mode. In the intact protein these segments act synergistically to balance out antibacterial and hemolytic activities. The study sets a precedent of multi-mode membrane disruption advancing the current understanding of structure-activity relationships in pore-forming proteins.
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Flowering Poration-A Synergistic Multi-Mode Antibacterial Mechanism by a Bacteriocin Fold.,Hammond K, Lewis H, Halliwell S, Desriac F, Nardone B, Ravi J, Hoogenboom BW, Upton M, Derrick JP, Ryadnov MG iScience. 2020 Aug 21;23(8):101423. doi: 10.1016/j.isci.2020.101423. Epub 2020, Jul 30. PMID:32795916<ref>PMID:32795916</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 6sig" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Staphylococcus epidermidis]]
[[Category: Staphylococcus epidermidis]]
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[[Category: Derrick, J P]]
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[[Category: Derrick JP]]
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[[Category: Antibiotic]]
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[[Category: Helical]]
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[[Category: Structural protein]]
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Current revision

Epidermicin antimicrobial protein from Staphylococcus epidermidis

PDB ID 6sig

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