View source for 6hhu


==Structure of the Bacillus anthracis Sap S-layer assembly domain==
<StructureSection load='6hhu' size='340' side='right'caption='[[6hhu]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6hhu]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis Bacillus anthracis] and [https://en.wikipedia.org/wiki/Lama_glama Lama glama]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6HHU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6HHU 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]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</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=6hhu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6hhu OCA], [https://pdbe.org/6hhu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6hhu RCSB], [https://www.ebi.ac.uk/pdbsum/6hhu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6hhu ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SLAP1_BACAN SLAP1_BACAN] The S-layer is a paracrystalline mono-layered assembly of proteins which coat the surface of bacteria.
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== Publication Abstract from PubMed ==
Anthrax is an ancient and deadly disease caused by the spore-forming bacterial pathogen Bacillus anthracis. At present, anthrax mostly affects wildlife and livestock, although it remains a concern for human public health-primarily for people who handle contaminated animal products and as a bioterrorism threat due to the high resilience of spores, a high fatality rate of cases and the lack of a civilian vaccination programme(1,2). The cell surface of B. anthracis is covered by a protective paracrystalline monolayer-known as surface layer or S-layer-that is composed of the S-layer proteins Sap or EA1. Here, we generate nanobodies to inhibit the self-assembly of Sap, determine the structure of the Sap S-layer assembly domain (Sap(AD)) and show that the disintegration of the S-layer attenuates the growth of B. anthracis and the pathology of anthrax in vivo. Sap(AD) comprises six beta-sandwich domains that fold and support the formation of S-layers independently of calcium. Sap-inhibitory nanobodies prevented the assembly of Sap and depolymerized existing Sap S-layers in vitro. In vivo, nanobody-mediated disruption of the Sap S-layer resulted in severe morphological defects and attenuated bacterial growth. Subcutaneous delivery of Sap inhibitory nanobodies cleared B. anthracis infection and prevented lethality in a mouse model of anthrax disease. These findings highlight disruption of S-layer integrity as a mechanism that has therapeutic potential in S-layer-carrying pathogens.

Structure of S-layer protein Sap reveals a mechanism for therapeutic intervention in anthrax.,Fioravanti A, Van Hauwermeiren F, Van der Verren SE, Jonckheere W, Goncalves A, Pardon E, Steyaert J, De Greve H, Lamkanfi M, Remaut H Nat Microbiol. 2019 Jul 15. pii: 10.1038/s41564-019-0499-1. doi:, 10.1038/s41564-019-0499-1. PMID:31308522<ref>PMID:31308522</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 6hhu" style="background-color:#fffaf0;"></div>

==See Also==
*[[Antibody 3D structures|Antibody 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bacillus anthracis]]
[[Category: Lama glama]]
[[Category: Large Structures]]
[[Category: Fioravanti A]]
[[Category: Remaut H]]