6xft: Difference between revisions

← Older edit

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 3: / Line 3: @@
 <StructureSection load='6xft' size='340' side='right'caption='[[6xft]], [[Resolution|resolution]] 1.78&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6xft]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Yersinia_enterocolitica Yersinia enterocolitica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6XFT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6XFT FirstGlance]. <br>
+<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6XFT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6XFT 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]] 1.78&#8491;</td></tr>
 <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SNC:S-NITROSO-CYSTEINE'>SNC</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=6xft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6xft OCA], [https://pdbe.org/6xft PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6xft RCSB], [https://www.ebi.ac.uk/pdbsum/6xft PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6xft ProSAT]</span></td></tr>
 </table>
-== Function ==
-[https://www.uniprot.org/uniprot/YOPH_YEREN YOPH_YEREN] Essential virulence determinant. This protein is a protein tyrosine phosphatase. The essential function of YopH in Yersinia pathogenesis is host-protein dephosphorylation. It contributes to the ability of the bacteria to resist phagocytosis by peritoneal macrophages.
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-Protein tyrosine phosphatases (PTPs) are key virulence factors in pathogenic bacteria, consequently, they have become important targets for new approaches against these pathogens, especially in the fight against antibiotic resistance. Among these targets of interest YopH (Yersinia outer protein H) from virulent species of Yersinia is an example. PTPs can be reversibly inhibited by nitric oxide (NO) since the oxidative modification of cysteine residues may influence the protein structure and catalytic activity. We therefore investigated the effects of NO on the structure and enzymatic activity of Yersinia enterocolitica YopH in vitro. Through phosphatase activity assays, we observe that in the presence of NO YopH activity was inhibited by 50%, and that this oxidative modification is partially reversible in the presence of DTT. Furthermore, YopH S-nitrosylation was clearly confirmed by a biotin switch assay, high resolution mass spectrometry (MS) and X-ray crystallography approaches. The crystal structure confirmed the S-nitrosylation of the catalytic cysteine residue, Cys403, while the MS data provide evidence that Cys221 and Cys234 might also be modified by NO. Interestingly, circular dichroism spectroscopy shows that the S-nitrosylation affects secondary structure of wild type YopH, though to a lesser extent on the catalytic cysteine to serine YopH mutant. The data obtained demonstrate that S-nitrosylation inhibits the catalytic activity of YopH, with effects beyond the catalytic cysteine. These findings are helpful for designing effective YopH inhibitors and potential therapeutic strategies to fight this pathogen or others that use similar mechanisms to interfere in the signal transduction pathways of their hosts.
-Crystal structure of the Cys-NO modified YopH tyrosine phosphatase.,Rocha RF, Martins PGA, D'Muniz Pereira H, Brandao-Neto J, Thiemann OH, Terenzi H, Menegatti ACO Biochim Biophys Acta Proteins Proteom. 2022 Jan 5;1870(3):140754. doi:, 10.1016/j.bbapap.2022.140754. PMID:34995802<ref>PMID:34995802</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 6xft" style="background-color:#fffaf0;"></div>
 ==See Also==
 *[[Tyrosine phosphatase 3D structures|Tyrosine phosphatase 3D structures]]
-== References ==
-<references/>
 __TOC__
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Yersinia enterocolitica]]
 [[Category: Fernandes R]]
 [[Category: Pereira HM]]
 [[Category: Terenzi H]]
 [[Category: Thiemann O]]