5ypk: Difference between revisions
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The | ==Crystal structure of NDM-1 bound to hydrolyzed imipenem representing an EI2 complex== | ||
<StructureSection load='5ypk' size='340' side='right'caption='[[5ypk]], [[Resolution|resolution]] 2.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5ypk]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5YPK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5YPK 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]] 2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=HIW:(2R,4S)-2-[(1S,2R)-1-CARBOXY-2-HYDROXYPROPYL]-4-[(2-{[(Z)-IMINOMETHYL]AMINO}ETHYL)SULFANYL]-3,4-DIHYDRO-2H-PYRROLE-5-CARBOXYLIC+ACID'>HIW</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=5ypk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ypk OCA], [https://pdbe.org/5ypk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ypk RCSB], [https://www.ebi.ac.uk/pdbsum/5ypk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ypk ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/E5KIY2_ECOLX E5KIY2_ECOLX] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
New Delhi metallo-beta-lactamases (NDMs), the recent additions to metallo-beta-lactamases (MBLs), pose a serious public health threat due to its highly efficient hydrolysis of beta-lactam antibiotics and rapid worldwide dissemination. The MBL-hydrolyzing mechanism for carbapenems is less studied than that of penicillins and cephalosporins. Here, we report crystal structures of NDM-1 in complex with hydrolyzed imipenem and meropenem, at resolutions of 1.80-2.32 A, together with NMR spectra monitoring meropenem hydrolysis. Three enzyme-intermediate/product derivatives, EI1, EI2, and EP, are trapped in these crystals. Our structural data reveal double-bond tautomerization from Delta(2) to Delta(1), absence of a bridging water molecule and an exclusive beta-diastereomeric product, all suggesting that the hydrolytic intermediates are protonated by a bulky water molecule incoming from the beta-face. These results strongly suggest a distinct mechanism of NDM-1-catalyzed carbapenem hydrolysis from that of penicillin or cephalosporin hydrolysis, which may provide a novel rationale for design of mechanism-based inhibitors. | |||
The mechanism of NDM-1-catalyzed carbapenem hydrolysis is distinct from that of penicillin or cephalosporin hydrolysis.,Feng H, Liu X, Wang S, Fleming J, Wang DC, Liu W Nat Commun. 2017 Dec 21;8(1):2242. doi: 10.1038/s41467-017-02339-w. PMID:29269938<ref>PMID:29269938</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 5ypk" style="background-color:#fffaf0;"></div> | ||
[[Category: | |||
[[Category: | ==See Also== | ||
*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Escherichia coli]] | |||
[[Category: Large Structures]] | |||
[[Category: Feng H]] | |||
[[Category: Liu W]] | |||
[[Category: Wang D]] | |||
Latest revision as of 11:34, 22 November 2023
Crystal structure of NDM-1 bound to hydrolyzed imipenem representing an EI2 complexCrystal structure of NDM-1 bound to hydrolyzed imipenem representing an EI2 complex
Structural highlights
FunctionPublication Abstract from PubMedNew Delhi metallo-beta-lactamases (NDMs), the recent additions to metallo-beta-lactamases (MBLs), pose a serious public health threat due to its highly efficient hydrolysis of beta-lactam antibiotics and rapid worldwide dissemination. The MBL-hydrolyzing mechanism for carbapenems is less studied than that of penicillins and cephalosporins. Here, we report crystal structures of NDM-1 in complex with hydrolyzed imipenem and meropenem, at resolutions of 1.80-2.32 A, together with NMR spectra monitoring meropenem hydrolysis. Three enzyme-intermediate/product derivatives, EI1, EI2, and EP, are trapped in these crystals. Our structural data reveal double-bond tautomerization from Delta(2) to Delta(1), absence of a bridging water molecule and an exclusive beta-diastereomeric product, all suggesting that the hydrolytic intermediates are protonated by a bulky water molecule incoming from the beta-face. These results strongly suggest a distinct mechanism of NDM-1-catalyzed carbapenem hydrolysis from that of penicillin or cephalosporin hydrolysis, which may provide a novel rationale for design of mechanism-based inhibitors. The mechanism of NDM-1-catalyzed carbapenem hydrolysis is distinct from that of penicillin or cephalosporin hydrolysis.,Feng H, Liu X, Wang S, Fleming J, Wang DC, Liu W Nat Commun. 2017 Dec 21;8(1):2242. doi: 10.1038/s41467-017-02339-w. PMID:29269938[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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