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==Structure of H247A mutant peptidoglycan peptidase complex with tetra-tri peptide== | |||
<StructureSection load='6jn0' size='340' side='right'caption='[[6jn0]], [[Resolution|resolution]] 2.16Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6jn0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"campylobacter_fetus_subsp._jejuni"_smibert_1974 "campylobacter fetus subsp. jejuni" smibert 1974]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6JN0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6JN0 FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=API:2,6-DIAMINOPIMELIC+ACID'>API</scene>, <scene name='pdbligand=C0O:'>C0O</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</scene></td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">A8118_01115 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=197 "Campylobacter fetus subsp. jejuni" Smibert 1974])</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6jn0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6jn0 OCA], [http://pdbe.org/6jn0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6jn0 RCSB], [http://www.ebi.ac.uk/pdbsum/6jn0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6jn0 ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Assembly of the peptidoglycan is crucial in maintaining viability of bacteria and in defining bacterial cell shapes, both of which are important for existence in the ecological niche that the organism occupies. Here, eight crystal structures for a member of the cell-shape-determining class of Campylobacter jejuni, the peptidoglycan peptidase 3 (Pgp3), are reported. Characterization of the turnover chemistry of Pgp3 reveals cell wall D,D-endopeptidase and D,D-carboxypeptidase activities. Catalysis is accompanied by large conformational changes upon peptidoglycan binding, whereby a loop regulates access to the active site. Furthermore, prior hydrolysis of the crosslinked peptide stem from the saccharide backbone of the peptidoglycan on one side is a pre-requisite for its recognition and turnover by Pgp3. These analyses reveal the noncanonical nature of the transformations at the core of the events that define the morphological shape for C. jejuni as an intestinal pathogen. | |||
Peptidoglycan reshaping by a noncanonical peptidase for helical cell shape in Campylobacter jejuni.,Min K, An DR, Yoon HJ, Rana N, Park JS, Kim J, Lee M, Hesek D, Ryu S, Kim BM, Mobashery S, Suh SW, Lee HH Nat Commun. 2020 Jan 23;11(1):458. doi: 10.1038/s41467-019-13934-4. PMID:31974386<ref>PMID:31974386</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Min, K | <div class="pdbe-citations 6jn0" style="background-color:#fffaf0;"></div> | ||
[[Category: Suh, S | == References == | ||
[[Category: | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Campylobacter fetus subsp. jejuni smibert 1974]] | |||
[[Category: Large Structures]] | |||
[[Category: An, D R]] | |||
[[Category: Lee, H H]] | |||
[[Category: Min, K J]] | |||
[[Category: Suh, S W]] | |||
[[Category: Yoon, H J]] | |||
[[Category: Hydrolase]] | |||
[[Category: Peptidoglycan]] | |||
Revision as of 11:58, 5 February 2020
Structure of H247A mutant peptidoglycan peptidase complex with tetra-tri peptideStructure of H247A mutant peptidoglycan peptidase complex with tetra-tri peptide
Structural highlights
Publication Abstract from PubMedAssembly of the peptidoglycan is crucial in maintaining viability of bacteria and in defining bacterial cell shapes, both of which are important for existence in the ecological niche that the organism occupies. Here, eight crystal structures for a member of the cell-shape-determining class of Campylobacter jejuni, the peptidoglycan peptidase 3 (Pgp3), are reported. Characterization of the turnover chemistry of Pgp3 reveals cell wall D,D-endopeptidase and D,D-carboxypeptidase activities. Catalysis is accompanied by large conformational changes upon peptidoglycan binding, whereby a loop regulates access to the active site. Furthermore, prior hydrolysis of the crosslinked peptide stem from the saccharide backbone of the peptidoglycan on one side is a pre-requisite for its recognition and turnover by Pgp3. These analyses reveal the noncanonical nature of the transformations at the core of the events that define the morphological shape for C. jejuni as an intestinal pathogen. Peptidoglycan reshaping by a noncanonical peptidase for helical cell shape in Campylobacter jejuni.,Min K, An DR, Yoon HJ, Rana N, Park JS, Kim J, Lee M, Hesek D, Ryu S, Kim BM, Mobashery S, Suh SW, Lee HH Nat Commun. 2020 Jan 23;11(1):458. doi: 10.1038/s41467-019-13934-4. PMID:31974386[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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