5hu4: Difference between revisions
New page: '''Unreleased structure''' The entry 5hu4 is ON HOLD Authors: Hongen Li Description: cystal structure of listeria monocytogenes sortase A Category: Unreleased Structures [[Category... |
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The entry | ==Cystal structure of listeria monocytogenes sortase A== | ||
<StructureSection load='5hu4' size='340' side='right'caption='[[5hu4]], [[Resolution|resolution]] 2.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5hu4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Listeria_monocytogenes Listeria monocytogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HU4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5HU4 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]] 2.3Å</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=5hu4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hu4 OCA], [https://pdbe.org/5hu4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5hu4 RCSB], [https://www.ebi.ac.uk/pdbsum/5hu4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5hu4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/SRTA_LISMO SRTA_LISMO] Transpeptidase that anchors surface proteins to the cell wall (PubMed:11854224, PubMed:11929538, PubMed:16247833, PubMed:22837151). Recognizes and modifies its substrate by proteolytic cleavage of a C-terminal sorting signal. Following cleavage, a covalent intermediate is formed via a thioester bond between the sortase and its substrate, which is then transferred and covalently attached to the cell wall (Probable). This sortase recognizes a Leu-Pro-x-Thr-Gly (LPXTG) motif, which is cleaved by the sortase between the threonine and glycine residues (PubMed:11929538). Involved in pathogenesis (PubMed:11854224, PubMed:11929538, PubMed:15028680). May regulate the rate of synthesis and/or the stability of a subset of LPXTG proteins (PubMed:22837151). Not involved in cell wall-anchoring of Hbp2 (SvpA) or Hbp1 (PubMed:15028680, PubMed:16247833).<ref>PMID:11854224</ref> <ref>PMID:11929538</ref> <ref>PMID:15028680</ref> <ref>PMID:16247833</ref> <ref>PMID:22837151</ref> <ref>PMID:11929538</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The critical role of sortase A in gram-positive bacterial pathogenicity makes this protein a good potential target for antimicrobial therapy. In this study, we report for the first time the crystal structure of Listeria monocytogenes sortase A and identify the active sites that mediate its transpeptidase activity. We also used a sortase A (SrtA) enzyme activity inhibition assay, simulation, and isothermal titration calorimetry analysis to discover that chalcone, an agent with little anti-L. monocytogenes activity, could significantly inhibit sortase A activity with an IC50 of 28.41 +/- 5.34 muM by occupying the active site of SrtA. The addition of chalcone to a co-culture of L. monocytogenes and Caco-2 cells significantly inhibited bacterial entry into the cells and L. monocytogenes-mediated cytotoxicity. Additionally, chalcone treatment decreased the mortality of infected mice, the bacterial burden in target organs, and the pathological damage to L. monocytogenes-infected mice. In conclusion, these findings suggest that chalcone is a promising candidate for the development of treatment against L. monocytogenes infection. | |||
Inhibition of sortase A by chalcone prevents Listeria monocytogenes infection.,Li H, Chen Y, Zhang B, Niu X, Song M, Luo Z, Lu G, Liu B, Zhao X, Wang J, Deng X Biochem Pharmacol. 2016 Apr 15;106:19-29. doi: 10.1016/j.bcp.2016.01.018. Epub, 2016 Jan 28. PMID:26826492<ref>PMID:26826492</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 5hu4" style="background-color:#fffaf0;"></div> | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Listeria monocytogenes]] | |||
[[Category: Li H]] | |||