2ano: Difference between revisions
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==Crystal structure of E.coli dihydrofolate reductase in complex with NADPH and the inhibitor MS-SH08-17== | ==Crystal structure of E.coli dihydrofolate reductase in complex with NADPH and the inhibitor MS-SH08-17== | ||
<StructureSection load='2ano' size='340' side='right' caption='[[2ano]], [[Resolution|resolution]] 2.68Å' scene=''> | <StructureSection load='2ano' size='340' side='right'caption='[[2ano]], [[Resolution|resolution]] 2.68Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2ano]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2ano]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ANO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ANO FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=817:1-{[N-(1-IMINO-GUANIDINO-METHYL)]SULFANYLMETHYL}-3-TRIFLUOROMETHYL-BENZENE'>817</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=817:1-{[N-(1-IMINO-GUANIDINO-METHYL)]SULFANYLMETHYL}-3-TRIFLUOROMETHYL-BENZENE'>817</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NDP:NADPH+DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NDP</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">folA, tmrA ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">folA, tmrA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Dihydrofolate_reductase Dihydrofolate reductase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.5.1.3 1.5.1.3] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ano FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ano OCA], [https://pdbe.org/2ano PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ano RCSB], [https://www.ebi.ac.uk/pdbsum/2ano PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ano ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/DYR_ECOLI DYR_ECOLI]] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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==See Also== | ==See Also== | ||
*[[Dihydrofolate reductase|Dihydrofolate reductase]] | *[[Dihydrofolate reductase 3D structures|Dihydrofolate reductase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Bacillus coli migula 1895]] | [[Category: Bacillus coli migula 1895]] | ||
[[Category: Dihydrofolate reductase]] | [[Category: Dihydrofolate reductase]] | ||
[[Category: Large Structures]] | |||
[[Category: Brown, E D]] | [[Category: Brown, E D]] | ||
[[Category: Daigle, D M]] | [[Category: Daigle, D M]] | ||
Revision as of 11:34, 27 January 2021
Crystal structure of E.coli dihydrofolate reductase in complex with NADPH and the inhibitor MS-SH08-17Crystal structure of E.coli dihydrofolate reductase in complex with NADPH and the inhibitor MS-SH08-17
Structural highlights
Function[DYR_ECOLI] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedDihydrofolate reductase (DHFR) is a vital metabolic enzyme and thus a clinically prominent target in the design of antimetabolites. In this work, we identify 1,4-bis-{[N-(1-imino-1-guanidino-methyl)]sulfanylmethyl}-3,6-dimethyl-benz ene (compound 1) as the correct structure of the previously reported DHFR inhibitor 1,4-bis-{(iminothioureidomethyl)aminomethyl}-3,6-dimethyl-benzene (compound 2). The fact that compound 1 has an uncharacteristic structure for DHFR inhibitors, and an affinity (KI of 11.5 nM) comparable to potent inhibitors such as methotrexate and trimethoprim, made this inhibitor of interest for further analysis. We have conducted a characterization of the primary interactions of compound 1 and DHFR using a combination of X-ray structure and SAR analysis. The crystal structure of E. coli DHFR in complex with compound 1 and NADPH reveals that one portion of this inhibitor exploits a unique binding surface, the M20 loop. The importance of this interface was further confirmed by SAR analysis and additional structural characterization. A 2.13 A structure of E. coli dihydrofolate reductase bound to a novel competitive inhibitor reveals a new binding surface involving the M20 loop region.,Summerfield RL, Daigle DM, Mayer S, Mallik D, Hughes DW, Jackson SG, Sulek M, Organ MG, Brown ED, Junop MS J Med Chem. 2006 Nov 30;49(24):6977-86. PMID:17125251[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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