View source for 4lcs


==The crystal structure of di-Zn dihydropyrimidinase in complex with hydantoin==
<StructureSection load='4lcs' size='340' side='right'caption='[[4lcs]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4lcs]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Tetraodon_nigroviridis Tetraodon nigroviridis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LCS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LCS 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]] 2.2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HYN:IMIDAZOLIDINE-2,4-DIONE'>HYN</scene>, <scene name='pdbligand=KCX:LYSINE+NZ-CARBOXYLIC+ACID'>KCX</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=4lcs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lcs OCA], [https://pdbe.org/4lcs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4lcs RCSB], [https://www.ebi.ac.uk/pdbsum/4lcs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4lcs ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q4SMR4_TETNG Q4SMR4_TETNG] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Lysine carbamylation, a post-translational modification, facilitates metal coordination for specific enzymatic activities. We have determined structures of the vertebrate dihydropyrimidinase from Tetraodon nigroviridis (TnDhp) in various states: the apo enzyme as well as two forms of the holo enzyme with one and two metals at the catalytic site. The essential active-site structural requirements have been identified with possible existence of four metal-mediated stages of lysine carbamylation. Only one metal is sufficient for stabilizing lysine carbamylation; however, the post-translational lysine carbamylation facilitates additional metal coordination for the regulation of specific enzymatic activities through controlling the conformations of two dynamic loops, Ala69-Arg74 and Met158-Met165, located in the tunnel for the substrate entrance. The substrate/product tunnel is in the ''open form'' in the apo-TnDhp, in the ''intermediate state'' in the mono-metal TnDhp, and in the ''close form'' in the di-metal TnDhp structure, respectively. Structural comparison also suggests that the C-terminal tail plays a role in the enzymatic function through interactions with the Ala69-Arg74 dynamic loop. In addition, the structures of the di-metal TnDhp in complexes with hydantoin, N-carbomyl-beta-alanine and N-carbomyl-beta-aminoisobutyrate, as well as apo-TnDhp in complex with a product analog, N-(2-acetamido)-iminodiacetic acid, have been determined. These structural results illustrate how a protein exploits unique lysines and the metal distribution to accomplish lysine carbamylation as well as subsequent enzymatic functions.

Crystal Structures of Vertebrate Dihydropyrimidinase and Complexes from Tetraodon Nigroviridis with Lysine Carbamylation: Metal and Structural Requirements for Post-Translational Modification and Function.,Hsieh YC, Chen MC, Hsu CC, Chan SI, Yang YS, Chen CJ J Biol Chem. 2013 Sep 4. PMID:24005677<ref>PMID:24005677</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4lcs" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Tetraodon nigroviridis]]
[[Category: Chan SI]]
[[Category: Chen MC]]
[[Category: Hsieh YC]]
[[Category: Hsu CC]]
[[Category: Yang YS]]