View source for 1lxy


==Crystal Structure of Arginine Deiminase covalently linked with L-citrulline==
<StructureSection load='1lxy' size='340' side='right'caption='[[1lxy]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1lxy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycoplasmopsis_arginini Mycoplasmopsis arginini]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LXY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LXY 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIR:CITRULLINE'>CIR</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=1lxy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lxy OCA], [https://pdbe.org/1lxy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lxy RCSB], [https://www.ebi.ac.uk/pdbsum/1lxy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lxy ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ARCA_MYCAR ARCA_MYCAR] 
== 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/lx/1lxy_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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/main_output.php?pdb_ID=1lxy ConSurf].
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== Publication Abstract from PubMed ==
Arginine deiminase (ADI), an enzyme that hydrolyzes arginine to generate energy in many parasitic microorganisms, has potent anticancer activities and can halt growth of solid tumors. We determined the crystal structure of ADI from Mycoplasma arginini in two different forms (1.6 and 2.0 A resolution) using multiple isomorphous replacement. ADI shares common structural features with the arginine-catabolizing enzymes Arg:Gly amidinotransferase and dimethylarginine dimethyl-aminohydrolase; ADI contains an additional domain of five helices. The scissile C-N bonds of the substrates and the catalytic triads (Cys398-His269-Glu213 of ADI) for the three enzymes superimpose on each other. The ADI structure from form I crystals corresponds to a tetrahedral intermediate with four heteroatoms (1S, 2N, 1O) covalently bonded to the reaction-center carbon. The structure from form II crystals represents an amidino-enzyme complex; the reaction-center carbon is covalently bonded to Cys398 sulfur and two nitrogens, and the reacting water molecule is only 2.54 A away.

Crystal structures of arginine deiminase with covalent reaction intermediates; implications for catalytic mechanism.,Das K, Butler GH, Kwiatkowski V, Clark AD Jr, Yadav P, Arnold E Structure. 2004 Apr;12(4):657-67. PMID:15062088<ref>PMID:15062088</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1lxy" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mycoplasmopsis arginini]]
[[Category: Arnold E]]
[[Category: Buttler GH]]
[[Category: Das K]]
[[Category: Kwiatkowski V]]
[[Category: Yadav P]]