1tsd: Difference between revisions
From Proteopedia
Jump to navigationJump to search
New page: left|200px<br /><applet load="1tsd" size="450" color="white" frame="true" align="right" spinBox="true" caption="1tsd, resolution 1.95Å" /> '''THYMIDYLATE SYNTHASE... |
No edit summary |
||
| (18 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
== | ==THYMIDYLATE SYNTHASE COMPLEX WITH 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) AND FOLATE ANALOG 1843U89== | ||
The anticancer drug 1843U89 inhibits thymidylate synthase (TS) at | <StructureSection load='1tsd' size='340' side='right'caption='[[1tsd]], [[Resolution|resolution]] 1.95Å' scene=''> | ||
== Structural highlights == | |||
<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> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95Å</td></tr> | |||
<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> | |||
<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> | |||
</table> | |||
== Function == | |||
[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. | |||
== 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/ts/1tsd_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=1tsd ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
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. | |||
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> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1tsd" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Thymidylate synthase 3D structures|Thymidylate synthase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Montfort WR]] | |||
[[Category: Montfort | [[Category: Weichsel A]] | ||
[[Category: Weichsel | |||
Latest revision as of 22:15, 26 March 2025
THYMIDYLATE SYNTHASE COMPLEX WITH 2'-DEOXYURIDINE 5'-MONOPHOSPHATE (DUMP) AND FOLATE ANALOG 1843U89
| ||||||||||||
