View source for 7cca


==Crystal structure of White Spot Syndrome Virus Thymidylate Synthase - ternary complex with Methotrexate and dUMP==
<StructureSection load='7cca' size='340' side='right'caption='[[7cca]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7cca]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Shrimp_white_spot_syndrome_virus_(isolate_Tongan) Shrimp white spot syndrome virus (isolate Tongan)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7CCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7CCA 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]] 2.75&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MTX:METHOTREXATE'>MTX</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=7cca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cca OCA], [https://pdbe.org/7cca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7cca RCSB], [https://www.ebi.ac.uk/pdbsum/7cca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7cca ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q77J90_WSSVS Q77J90_WSSVS] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
White spot syndrome virus (WSSV), the causative agent of white spot disease (WSD) severely affecting crustacean life forms, is highly contagious and forms the principal cause of massive economic losses in the shrimp aquaculture industry. Previous studies have demonstrated thymidylate synthase as a successful anti-cancer therapeutic drug target, leading to various anti-cancer drugs. The differential utilization of nucleotide precursors between white spot syndrome virus and shrimp encouraged us to analyze WSSV-thymidylate synthase (wTS). Here, we report the crystal structures of wTS in its apo-form and as a ternary complex with deoxyuridine monophosphate (dUMP) and methotrexate at a resolution of 2.35 A and 2.6 A, respectively. wTS possesses a fold characteristic to known thymidylate synthase (TS) structures. Like other TS structures, the apo-form of wTS displays an open conformation, whereas the wTS ternary complex attains a closed conformation. While the C-terminal loop maintains a typical distance from methotrexate, the Sgamma atom of the catalytic Cys is positioned farther from the C6 atom of dUMP. Altogether, we report the first TS structure from a crustacean virus and highlight its distinction from shrimp and other TS structures.

Structure analysis of thymidylate synthase from white spot syndrome virus reveals WSSV-specific structural elements.,Panchal V, Kumar S, Hossain SN, Vasudevan D Int J Biol Macromol. 2020 Nov 14. pii: S0141-8130(20)34996-5. doi:, 10.1016/j.ijbiomac.2020.11.071. PMID:33197475<ref>PMID:33197475</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7cca" style="background-color:#fffaf0;"></div>

==See Also==
*[[Thymidylate synthase 3D structures|Thymidylate synthase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Kumar S]]
[[Category: Panchal NV]]
[[Category: Shaikh N]]
[[Category: Vasudevan D]]