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| | <StructureSection load='6ny7' size='340' side='right'caption='[[6ny7]], [[Resolution|resolution]] 1.40Å' scene=''> | | <StructureSection load='6ny7' size='340' side='right'caption='[[6ny7]], [[Resolution|resolution]] 1.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6ny7]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_pneumoniae"_(schroeter_1886)_flugge_1886 "bacillus pneumoniae" (schroeter 1886) flugge 1886]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6NY7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6NY7 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6ny7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Klebsiella_pneumoniae Klebsiella pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6NY7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6NY7 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=L8J:[(5,7-dibromo-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic+acid'>L8J</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.4Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">blaNDM-1, bla NDM-1, blaNDM-1_1, blaNDM-1_2, blaNDM-1_3, blaNDM1, NDM-1, C3483_29595, C7V41_28630, D647_p47098, DDJ63_29735, DZB15_28435, EC13450_007, NCTC13443_00040, p2146_00143, pCRE380_21, PMK1_ndm00067, PMK1_ndm00076, PMK1_ndm00085, pN11x00042NDM_090, pNDM-SX04_5, pNDM10469_138, SAMEA3531848_05178, SAMEA4394746_03823, TR3_031, TR4_031 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=573 "Bacillus pneumoniae" (Schroeter 1886) Flugge 1886])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=L8J:[(5,7-dibromo-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic+acid'>L8J</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Beta-lactamase Beta-lactamase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.2.6 3.5.2.6] </span></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=6ny7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ny7 OCA], [https://pdbe.org/6ny7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ny7 RCSB], [https://www.ebi.ac.uk/pdbsum/6ny7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ny7 ProSAT]</span></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=6ny7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ny7 OCA], [http://pdbe.org/6ny7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ny7 RCSB], [http://www.ebi.ac.uk/pdbsum/6ny7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ny7 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/BLAN1_KLEPN BLAN1_KLEPN] Confers resistance to many beta-lactam antibiotics, including some carbapenems. Does not confer resistance to the polymixin colistin or the fluoroquinolone ciprofloxacin. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 6ny7" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 6ny7" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Beta-lactamase]] | + | [[Category: Klebsiella pneumoniae]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Akhtar, A]] | + | [[Category: Akhtar A]] |
| - | [[Category: Chen, Y]] | + | [[Category: Chen Y]] |
| - | [[Category: Carbapenemase]]
| + | |
| - | [[Category: Complex]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Inhibitor]]
| + | |
| - | [[Category: Phosphonate]]
| + | |
| Structural highlights
Function
BLAN1_KLEPN Confers resistance to many beta-lactam antibiotics, including some carbapenems. Does not confer resistance to the polymixin colistin or the fluoroquinolone ciprofloxacin.
Publication Abstract from PubMed
Gram-negative pathogens expressing serine beta-lactamases (SBLs) and metallo-beta-lactamases (MBLs), especially those with carbapenemase activity, threaten the clinical utility of almost all beta-lactam antibiotics. Here we describe the discovery of a heteroaryl phosphonate scaffold that exhibits noncovalent cross-class inhibition of representative carbapenemases, specifically the SBL KPC-2 and the MBLs NDM-1 and VIM-2. The most potent lead, compound 16, exhibited low nM to low muM inhibition of KPC-2, NDM-1, and VIM-2. Compound 16 potentiated imipenem efficacy against resistant clinical and laboratory bacterial strains expressing carbapenemases while showing some cytotoxicity toward human HEK293T cells only at concentrations above 100 mug/mL. Complex structures with KPC-2, NDM-1, and VIM-2 demonstrate how these inhibitors achieve high binding affinity to both enzyme classes. These findings provide a structurally and mechanistically new scaffold for drug discovery targeting multidrug resistant Gram-negative pathogens and more generally highlight the active site features of carbapenemases that can be leveraged for lead discovery.
Heteroaryl Phosphonates as Noncovalent Inhibitors of Both Serine- and Metallocarbapenemases.,Pemberton OA, Jaishankar P, Akhtar A, Adams JL, Shaw LN, Renslo AR, Chen Y J Med Chem. 2019 Sep 26;62(18):8480-8496. doi: 10.1021/acs.jmedchem.9b00728. Epub, 2019 Sep 13. PMID:31483651[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Pemberton OA, Jaishankar P, Akhtar A, Adams JL, Shaw LN, Renslo AR, Chen Y. Heteroaryl Phosphonates as Noncovalent Inhibitors of Both Serine- and Metallocarbapenemases. J Med Chem. 2019 Sep 26;62(18):8480-8496. doi: 10.1021/acs.jmedchem.9b00728. Epub, 2019 Sep 13. PMID:31483651 doi:http://dx.doi.org/10.1021/acs.jmedchem.9b00728
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