3fl8: Difference between revisions
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New page: '''Unreleased structure''' The entry 3fl8 is ON HOLD Authors: Bourne, Christina R., Bunce, Richard A., Bourne, Philip C., Berlin, K. Darrell, Barrow, Esther W., Barrow, William W. Desc... |
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==Crystal structure of B. anthracis dihydrofolate reductase (DHFR) with RAB1, a TMP-dihydrophthalazine derivative== | |||
<StructureSection load='3fl8' size='340' side='right'caption='[[3fl8]], [[Resolution|resolution]] 2.29Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3fl8]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis Bacillus anthracis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FL8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FL8 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]] 2.2881Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=RAR:5-(3,4-DIMETHOXY-5-{(1E)-3-OXO-3-[(1S)-1-PROPYLPHTHALAZIN-2(1H)-YL]PROP-1-EN-1-YL}BENZYL)PYRIMIDINE-2,4-DIAMINE'>RAR</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=3fl8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fl8 OCA], [https://pdbe.org/3fl8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fl8 RCSB], [https://www.ebi.ac.uk/pdbsum/3fl8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fl8 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q81R22_BACAN Q81R22_BACAN] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis (By similarity).[PIRNR:PIRNR000194] | |||
== 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/fl/3fl8_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=3fl8 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Bacillus anthracis possesses an innate resistance to the antibiotic trimethoprim due to poor binding to dihydrofolate reductase (DHFR); currently, there are no commercial antibacterials that target this enzyme in B. anthracis. We have previously reported a series of dihydrophthalazine-based trimethoprim derivatives that are inhibitors for this target. In the present work, we have synthesized one compound (RAB1) displaying favorable 50% inhibitory concentration (54 nM) and MIC (< or =12.8 microg/ml) values. RAB1 was cocrystallized with the B. anthracis DHFR in the space group P2(1)2(1)2(1), and X-ray diffraction data were collected to a 2.3-A resolution. Binding of RAB1 causes a conformational change of the side chain of Arg58 and Met37 to accommodate the dihydrophthalazine moiety. Unlike the natural substrate or trimethoprim, the dihydrophthalazine group provides a large hydrophobic anchor that embeds within the DHFR active site and accounts for its selective inhibitory activity against B. anthracis. | |||
Crystal structure of Bacillus anthracis dihydrofolate reductase with the dihydrophthalazine-based trimethoprim derivative RAB1 provides a structural explanation of potency and selectivity.,Bourne CR, Bunce RA, Bourne PC, Berlin KD, Barrow EW, Barrow WW Antimicrob Agents Chemother. 2009 Jul;53(7):3065-73. Epub 2009 Apr 13. PMID:19364848<ref>PMID:19364848</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3fl8" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Dihydrofolate reductase 3D structures|Dihydrofolate reductase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bacillus anthracis]] | |||
[[Category: Large Structures]] | |||
[[Category: Barrow WW]] | |||
[[Category: Bourne CR]] | |||
Latest revision as of 06:47, 6 September 2023
Crystal structure of B. anthracis dihydrofolate reductase (DHFR) with RAB1, a TMP-dihydrophthalazine derivative
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