1i00: Difference between revisions
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==CRYSTAL STRUCTURE OF HUMAN THYMIDYLATE SYNTHASE, TERNARY COMPLEX WITH DUMP AND TOMUDEX== | ==CRYSTAL STRUCTURE OF HUMAN THYMIDYLATE SYNTHASE, TERNARY COMPLEX WITH DUMP AND TOMUDEX== | ||
<StructureSection load='1i00' size='340' side='right' caption='[[1i00]], [[Resolution|resolution]] 2.50Å' scene=''> | <StructureSection load='1i00' size='340' side='right'caption='[[1i00]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1i00]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1i00]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1I00 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1I00 FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> | ||
<tr><td class="sblockLbl"><b>[[ | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D16:TOMUDEX'>D16</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=1i00 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1i00 OCA], [https://pdbe.org/1i00 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1i00 RCSB], [https://www.ebi.ac.uk/pdbsum/1i00 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1i00 ProSAT]</span></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </table> | ||
<table> | == Function == | ||
[https://www.uniprot.org/uniprot/TYSY_HUMAN TYSY_HUMAN] Contributes to the de novo mitochondrial thymidylate biosynthesis pathway.<ref>PMID:21876188</ref> | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/i0/1i00_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/i0/1i00_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </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/ | </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=1i00 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 1i00" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Thymidylate synthase|Thymidylate synthase]] | *[[Thymidylate synthase 3D structures|Thymidylate synthase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 34: | Line 37: | ||
</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Almog | [[Category: Almog RA]] | ||
[[Category: Maley | [[Category: Maley F]] | ||
[[Category: Maley | [[Category: Maley GF]] | ||
[[Category: Roey | [[Category: Van Roey P]] | ||
[[Category: Waddling | [[Category: Waddling CA]] | ||
Latest revision as of 09:18, 9 August 2023
CRYSTAL STRUCTURE OF HUMAN THYMIDYLATE SYNTHASE, TERNARY COMPLEX WITH DUMP AND TOMUDEXCRYSTAL STRUCTURE OF HUMAN THYMIDYLATE SYNTHASE, TERNARY COMPLEX WITH DUMP AND TOMUDEX
Structural highlights
FunctionTYSY_HUMAN Contributes to the de novo mitochondrial thymidylate biosynthesis pathway.[1] 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 PubMedThe crystal structures of a deletion mutant of human thymidylate synthase (TS) and its ternary complex with dUMP and Tomudex have been determined at 2.0 A and 2.5 A resolution, respectively. The mutant TS, which lacks 23 residues near the amino terminus, is as active as the wild-type enzyme. The ternary complex is observed in the open conformation, similar to that of the free enzyme and to that of the ternary complex of rat TS with the same ligands. This is in contrast to Escherichia coli TS, where the ternary complex with Tomudex and dUMP is observed in the closed conformation. While the ligands interact with each other in identical fashion regardless of the enzyme conformation, they are displaced by about 1.0 A away from the catalytic cysteine in the open conformation. As a result, the covalent bond between the catalytic cysteine sulfhydryl and the base of dUMP, which is the first step in the reaction mechanism of TS and is observed in all ternary complexes of the E. coli enzyme, is not formed. This displacement results from differences in the interactions between Tomudex and the protein that are caused by differences in the environment of the glutamyl tail of the Tomudex molecule. Despite the absence of the closed conformation, Tomudex inhibits human TS ten-fold more strongly than E. coli TS. These results suggest that formation of a covalent bond between the catalytic cysteine and the substrate dUMP is not required for effective inhibition of human TS by cofactor analogs and could have implications for drug design by eliminating this as a condition for lead compounds. Crystal structure of a deletion mutant of human thymidylate synthase Delta (7-29) and its ternary complex with Tomudex and dUMP.,Almog R, Waddling CA, Maley F, Maley GF, Van Roey P Protein Sci. 2001 May;10(5):988-96. PMID:11316879[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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