View source for 7umw


==Crystal structure of E. Coli FabI in complex with NAD and Fabimycin ((S,E)-3-(7-amino-8-oxo-6,7,8,9-tetrahydro-5H-pyrido[2,3-b]azepin-3-yl)-N-methyl-N-((3-methylbenzofuran-2-yl)methyl)acrylamide)==
<StructureSection load='7umw' size='340' side='right'caption='[[7umw]], [[Resolution|resolution]] 1.54&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7umw]] is a 2 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=7UMW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7UMW 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]] 1.54&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=NUC:(2E)-3-[(7S)-7-amino-8-oxo-6,7,8,9-tetrahydro-5H-pyrido[2,3-b]azepin-3-yl]-N-methyl-N-[(3-methyl-1-benzofuran-2-yl)methyl]prop-2-enamide'>NUC</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=7umw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7umw OCA], [https://pdbe.org/7umw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7umw RCSB], [https://www.ebi.ac.uk/pdbsum/7umw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7umw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FABI_ECOLI FABI_ECOLI] Catalyzes the reduction of a carbon-carbon double bond in an enoyl moiety that is covalently linked to an acyl carrier protein (ACP). Involved in the elongation cycle of fatty acid which are used in the lipid metabolism and in the biotin biosynthesis.<ref>PMID:8119879</ref> <ref>PMID:7592873</ref> <ref>PMID:20693992</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Genomic studies and experiments with permeability-deficient strains have revealed a variety of biological targets that can be engaged to kill Gram-negative bacteria. However, the formidable outer membrane and promiscuous efflux pumps of these pathogens prevent many candidate antibiotics from reaching these targets. One such promising target is the enzyme FabI, which catalyzes the rate-determining step in bacterial fatty acid biosynthesis. Notably, FabI inhibitors have advanced to clinical trials for Staphylococcus aureus infections but not for infections caused by Gram-negative bacteria. Here, we synthesize a suite of FabI inhibitors whose structures fit permeation rules for Gram-negative bacteria and leverage activity against a challenging panel of Gram-negative clinical isolates as a filter for advancement. The compound to emerge, called fabimycin, has impressive activity against &gt;200 clinical isolates of Escherichia coli, Klebsiella pneumoniae, and Acinetobacter baumannii, and does not kill commensal bacteria. X-ray structures of fabimycin in complex with FabI provide molecular insights into the inhibition. Fabimycin demonstrates activity in multiple mouse models of infection caused by Gram-negative bacteria, including a challenging urinary tract infection model. Fabimycin has translational promise, and its discovery provides additional evidence that antibiotics can be systematically modified to accumulate in Gram-negative bacteria and kill these problematic pathogens.

An Iterative Approach Guides Discovery of the FabI Inhibitor Fabimycin, a Late-Stage Antibiotic Candidate with In Vivo Efficacy against Drug-Resistant Gram-Negative Infections.,Parker EN, Cain BN, Hajian B, Ulrich RJ, Geddes EJ, Barkho S, Lee HY, Williams JD, Raynor M, Caridha D, Zaino A, Shekhar M, Munoz KA, Rzasa KM, Temple ER, Hunt D, Jin X, Vuong C, Pannone K, Kelly AM, Mulligan MP, Lee KK, Lau GW, Hung DT, Hergenrother PJ ACS Cent Sci. 2022 Aug 24;8(8):1145-1158. doi: 10.1021/acscentsci.2c00598. Epub , 2022 Aug 10. PMID:36032774<ref>PMID:36032774</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 7umw" style="background-color:#fffaf0;"></div>

==See Also==
*[[Enoyl-Acyl-Carrier Protein Reductase 3D structures|Enoyl-Acyl-Carrier Protein Reductase 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Hajian B]]