3d4f
From Proteopedia
(Difference between revisions)
(New page: '''Unreleased structure''' The entry 3d4f is ON HOLD Authors: Pattanaik, P., Bethel, C.R., Hujer, A.M., Hujer, K.M., Distler, A.M., Bonomo, R.A., Buynak, J.D., van den Akker, F. Descri...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==SHV-1 beta-lactamase complex with LN1-255== | |
| + | <StructureSection load='3d4f' size='340' side='right'caption='[[3d4f]], [[Resolution|resolution]] 1.55Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3d4f]] 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=3D4F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3D4F 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]] 1.55Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LN1:(3R)-4-{[(3,4-DIHYDROXYPHENYL)ACETYL]OXY}-N-(2-FORMYLINDOLIZIN-3-YL)-3-SULFINO-D-VALINE'>LN1</scene>, <scene name='pdbligand=MA4:CYCLOHEXYL-HEXYL-BETA-D-MALTOSIDE'>MA4</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=3d4f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d4f OCA], [https://pdbe.org/3d4f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3d4f RCSB], [https://www.ebi.ac.uk/pdbsum/3d4f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3d4f ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/BLA1_KLEPN BLA1_KLEPN] | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d4/3d4f_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3d4f ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | In an effort to devise strategies for overcoming bacterial beta-lactamases, we studied LN-1-255, a 6-alkylidene-2'-substituted penicillin sulfone inhibitor. By possessing a catecholic functionality that resembles a natural bacterial siderophore, LN-1-255 is unique among beta-lactamase inhibitors. LN-1-255 combined with piperacillin was more potent against Escherichia coli DH10B strains bearing bla(SHV) extended-spectrum and inhibitor-resistant beta-lactamases than an equivalent amount of tazobactam and piperacillin. In addition, LN-1-255 significantly enhanced the activity of ceftazidime and cefpirome against extended-spectrum cephalosporin and Sme-1 containing carbapenem-resistant clinical strains. LN-1-255 inhibited SHV-1 and SHV-2 beta-lactamases with nm affinity (K(I) = 110 +/- 10 and 100 +/- 10 nm, respectively). When LN-1-255 inactivated SHV beta-lactamases, a single intermediate was detected by mass spectrometry. The crystal structure of LN-1-255 in complex with SHV-1 was determined at 1.55A resolution. Interestingly, this novel inhibitor forms a bicyclic aromatic intermediate with its carbonyl oxygen pointing out of the oxyanion hole and forming hydrogen bonds with Lys-234 and Ser-130 in the active site. Electron density for the "tail" of LN-1-255 is less ordered and modeled in two conformations. Both conformations have the LN-1-255 carboxyl group interacting with Arg-244, yet the remaining tails of the two conformations diverge. The observed presence of the bicyclic aromatic intermediate with its carbonyl oxygen positioned outside of the oxyanion hole provides a rationale for the stability of this inhibitory intermediate. The 2'-substituted penicillin sulfone, LN-1-255, is proving to be an important lead compound for novel beta-lactamase inhibitor design. | ||
| - | + | Strategic design of an effective beta-lactamase inhibitor: LN-1-255, a 6-alkylidene-2'-substituted penicillin sulfone.,Pattanaik P, Bethel CR, Hujer AM, Hujer KM, Distler AM, Taracila M, Anderson VE, Fritsche TR, Jones RN, Pagadala SR, van den Akker F, Buynak JD, Bonomo RA J Biol Chem. 2009 Jan 9;284(2):945-53. Epub 2008 Oct 27. PMID:18955486<ref>PMID:18955486</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| + | <div class="pdbe-citations 3d4f" style="background-color:#fffaf0;"></div> | ||
| - | + | ==See Also== | |
| - | + | *[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]] | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Klebsiella pneumoniae]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Bethel CR]] | ||
| + | [[Category: Bonomo RA]] | ||
| + | [[Category: Buynak JD]] | ||
| + | [[Category: Hujer AM]] | ||
| + | [[Category: Pattanaik P]] | ||
| + | [[Category: Van den Akker F]] | ||
Current revision
SHV-1 beta-lactamase complex with LN1-255
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