View source for 4v2n


==Crystallographic structure of thioredoxin from Litopenaeus vannamei: Radiation damage effect at 85 MGy, focused in disulfide bonds==
<StructureSection load='4v2n' size='340' side='right'caption='[[4v2n]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4v2n]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Penaeus_vannamei Penaeus vannamei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4V2N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4V2N 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]] 2.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4v2n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4v2n OCA], [https://pdbe.org/4v2n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4v2n RCSB], [https://www.ebi.ac.uk/pdbsum/4v2n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4v2n ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/B1PWB9_PENVA B1PWB9_PENVA] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Thioredoxin (Trx) is a small 12-kDa redox protein that catalyzes the reduction of disulfide bonds in proteins from different biological systems. A recent study of the crystal structure of white leg shrimp thioredoxin 1 from Litopenaeus vannamei (LvTrx) revealed a dimeric form of the protein mediated by a covalent link through a disulfide bond between Cys73 from each monomer. In the present study, X-ray-induced damage in the catalytic and the interface disulfide bond of LvTrx was studied at atomic resolution at different transmission energies of 8% and 27%, 12.8 keV at 100 K in the beamline I-24 at Diamond Light Source. We found that at an absorbed dose of 32 MGy, the X-ray induces the cleavage of the disulfide bond of each catalytic site; however, the interface disulfide bond was cleaved at an X-ray adsorbed dose of 85 MGy; despite being the most solvent-exposed disulfide bond in LvTrx (~50 A2). This result clearly established that the interface disulfide bond is very stable and, therefore, less susceptible to being reduced by X-rays. In fact, these studies open the possibility of the existence in solution of a dimeric LvTrx.

Crystallographic Studies Evidencing the High Energy Tolerance to Disrupting the Interface Disulfide Bond of Thioredoxin 1 from White Leg Shrimp Litopenaeus vannamei.,Campos-Acevedo AA, Rudino-Pinera E Molecules. 2014 Dec 15;19(12):21113-26. doi: 10.3390/molecules191221113. PMID:25517346<ref>PMID:25517346</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4v2n" style="background-color:#fffaf0;"></div>

==See Also==
*[[Thioredoxin 3D structures|Thioredoxin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Penaeus vannamei]]
[[Category: Campos-Acevedo AA]]
[[Category: Rudino-Pinera E]]