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{{STRUCTURE_2cfa| PDB=2cfa | SCENE= }}
==Structure of viral flavin-dependant thymidylate synthase ThyX==
===Structure of viral flavin-dependant thymidylate synthase ThyX===
<StructureSection load='2cfa' size='340' side='right' caption='[[2cfa]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
{{ABSTRACT_PUBMED_16707489}}
== Structural highlights ==
<table><tr><td colspan='2'>[[2cfa]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Paramecium_bursaria_chlorella_virus_1 Paramecium bursaria chlorella virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CFA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CFA FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene><br>
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CME:S,S-(2-HYDROXYETHYL)THIOCYSTEINE'>CME</scene></td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Thymidylate_synthase_(FAD) Thymidylate synthase (FAD)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.148 2.1.1.148] </span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2cfa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cfa OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2cfa RCSB], [http://www.ebi.ac.uk/pdbsum/2cfa PDBsum]</span></td></tr>
<table>
== 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/cf/2cfa_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
By using biochemical and structural analyses, we have investigated the catalytic mechanism of the recently discovered flavin-dependent thymidylate synthase ThyX from Paramecium bursaria chlorella virus-1 (PBCV-1). Site-directed mutagenesis experiments have identified several residues implicated in either NADPH oxidation or deprotonation activity of PBCV-1 ThyX. Chemical modification by diethyl pyrocarbonate and mass spectroscopic analyses identified a histidine residue (His53) crucial for NADPH oxidation and located in the vicinity of the redox active N-5 atom of the FAD ring system. Moreover, we observed that the conformation of active site key residues of PBCV-1 ThyX differs from earlier reported ThyX structures, suggesting structural changes during catalysis. Steady-state kinetic analyses support a reaction mechanism where ThyX catalysis proceeds via formation of distinct ternary complexes without formation of a methyl enzyme intermediate.


==Function==
Catalytic mechanism and structure of viral flavin-dependent thymidylate synthase ThyX.,Graziani S, Bernauer J, Skouloubris S, Graille M, Zhou CZ, Marchand C, Decottignies P, van Tilbeurgh H, Myllykallio H, Liebl U J Biol Chem. 2006 Aug 18;281(33):24048-57. Epub 2006 May 17. PMID:16707489<ref>PMID:16707489</ref>
[[http://www.uniprot.org/uniprot/THYX_PBCV1 THYX_PBCV1]] Catalyzes the formation of dTMP and tetrahydrofolate from dUMP and methylenetetrahydrofolate (By similarity).  


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[2cfa]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Paramecium_bursaria_chlorella_virus_1 Paramecium bursaria chlorella virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CFA OCA].
</div>


==See Also==
==See Also==
*[[Thymidylate synthase|Thymidylate synthase]]
*[[Thymidylate synthase|Thymidylate synthase]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:016707489</ref><references group="xtra"/><references/>
__TOC__
</StructureSection>
[[Category: Paramecium bursaria chlorella virus 1]]
[[Category: Paramecium bursaria chlorella virus 1]]
[[Category: Bernauer, J.]]
[[Category: Bernauer, J.]]
Retrieved from "https://proteopedia.org/2cfa"