View source for 6mzo


==X-ray Structure of an Inactive Zymogen C11 Protease from Parabacteroides distasonis==
<StructureSection load='6mzo' size='340' side='right'caption='[[6mzo]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6mzo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Parabacteroides_distasonis_ATCC_8503 Parabacteroides distasonis ATCC 8503]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6MZO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6MZO 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]] 1.653&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</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=6mzo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6mzo OCA], [https://pdbe.org/6mzo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6mzo RCSB], [https://www.ebi.ac.uk/pdbsum/6mzo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6mzo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A6LH12_PARD8 A6LH12_PARD8] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The clostripain-like (C11) family of cysteine proteases are ubiquitously produced by the vast majority of the bacterial strains that make up the human distal gut microbiome. Recent reports show that some C11 proteases promote host immune responses and bacterial pathogenesis, including the induction of neutrophil phagocytosis and the activation of bacterial pathogenic toxins, respectively. The crystal structure of distapain, the only C11 protease predicted within the genome of the commensal bacterium Parabacteroides distasonis, was determined in the inactive zymogen state to 1.65 A resolution. This is the first C11 protease structure of a zymogen, and the structure helped to uncover key unique conformations among critical active-site residues that are likely to assist in preserving the inactive protease. His135, a member of the catalytic dyad, is repositioned approximately 5.5 A from the orientation found in active C11 structures and forms a hydrogen bond to Asp180 and a pi-stacking interaction with Trp133. The structure sheds light on the potential importance of Asp180 and Trp133, as these residues are highly conserved across C11 proteases. Structure elucidation of C11 proteases will ultimately help to identify new ways to chemically and/or biologically regulate this family of enzymes, which represent potential drug-discovery targets in microbiome-related gastrointestinal diseases.

X-ray structure of an inactive zymogen clostripain-like protease from Parabacteroides distasonis.,Gonzalez-Paez GE, Roncase EJ, Wolan DW Acta Crystallogr D Struct Biol. 2019 Mar 1;75(Pt 3):325-332. doi:, 10.1107/S2059798319000809. Epub 2019 Feb 28. PMID:30950403<ref>PMID:30950403</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6mzo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Parabacteroides distasonis ATCC 8503]]
[[Category: Gonzalez-Paez GE]]
[[Category: Roncase EJ]]
[[Category: Wolan DW]]