1tsd

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[[Image:1tsd.gif|left|200px]]
 
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==THYMIDYLATE SYNTHASE COMPLEX WITH 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) AND FOLATE ANALOG 1843U89==
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The line below this paragraph, containing "STRUCTURE_1tsd", creates the "Structure Box" on the page.
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<StructureSection load='1tsd' size='340' side='right'caption='[[1tsd]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1tsd]] 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=1TSD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TSD FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=F89:S)-2-(5(((1,2-DIHYDRO-3-METHYL-1-OXOBENZO(F)QUINAZOLIN-9-YL)METHYL)AMINO)1-OXO-2-ISOINDOLINYL)GLUTARIC+ACID'>F89</scene>, <scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene>, <scene name='pdbligand=UMP:2-DEOXYURIDINE+5-MONOPHOSPHATE'>UMP</scene></td></tr>
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{{STRUCTURE_1tsd| PDB=1tsd | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1tsd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tsd OCA], [https://pdbe.org/1tsd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tsd RCSB], [https://www.ebi.ac.uk/pdbsum/1tsd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tsd ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TYSY_ECOLI TYSY_ECOLI] Provides the sole de novo source of dTMP for DNA biosynthesis. This protein also binds to its mRNA thus repressing its own translation.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ts/1tsd_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1tsd ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The anticancer drug 1843U89 inhibits thymidylate synthase (TS) at sub-nanomolar concentrations and is undergoing clinical trial. The 1.95 A crystal structure of Escherichia coli TS bound to the drug and dUMP reveals that the 1843U89 binding surface includes a hydrophobic patch that is normally buried. To reach this patch, 1843U89 inserts into the wall of the TS active site, resulting in a severe local distortion of the protein. In this new conformation, active-site groups that normally bind to the catalytic cofactor methylene-tetrahydrofolate instead bind to 1843U89 in new ways. This structure provides a rare example of a protein that can bind tightly to distinct substances using a single, flexible, binding surface. This has implications for drug design, as 1843U89 could not have been obtained from current structure-based approaches.
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'''THYMIDYLATE SYNTHASE COMPLEX WITH 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) AND FOLATE ANALOG 1843U89'''
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Ligand-induced distortion of an active site in thymidylate synthase upon binding anticancer drug 1843U89.,Weichsel A, Montfort WR Nat Struct Biol. 1995 Dec;2(12):1095-101. PMID:8846221<ref>PMID:8846221</ref>
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==Overview==
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The anticancer drug 1843U89 inhibits thymidylate synthase (TS) at sub-nanomolar concentrations and is undergoing clinical trial. The 1.95 A crystal structure of Escherichia coli TS bound to the drug and dUMP reveals that the 1843U89 binding surface includes a hydrophobic patch that is normally buried. To reach this patch, 1843U89 inserts into the wall of the TS active site, resulting in a severe local distortion of the protein. In this new conformation, active-site groups that normally bind to the catalytic cofactor methylene-tetrahydrofolate instead bind to 1843U89 in new ways. This structure provides a rare example of a protein that can bind tightly to distinct substances using a single, flexible, binding surface. This has implications for drug design, as 1843U89 could not have been obtained from current structure-based approaches.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1TSD is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TSD OCA].
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</div>
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<div class="pdbe-citations 1tsd" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Ligand-induced distortion of an active site in thymidylate synthase upon binding anticancer drug 1843U89., Weichsel A, Montfort WR, Nat Struct Biol. 1995 Dec;2(12):1095-101. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8846221 8846221]
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*[[Thymidylate synthase 3D structures|Thymidylate synthase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Thymidylate synthase]]
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[[Category: Montfort WR]]
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[[Category: Montfort, W R.]]
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[[Category: Weichsel A]]
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[[Category: Weichsel, A.]]
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[[Category: 1843u89]]
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[[Category: Dump]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 10:18:39 2008''
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Current revision

THYMIDYLATE SYNTHASE COMPLEX WITH 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) AND FOLATE ANALOG 1843U89

PDB ID 1tsd

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