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[[Image:2kau.png|left|200px]]
==THE CRYSTAL STRUCTURE OF UREASE FROM KLEBSIELLA AEROGENES AT 2.2 ANGSTROMS RESOLUTION==
<StructureSection load='2kau' size='340' side='right' caption='[[2kau]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2kau]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Enterobacter_aerogenes Enterobacter aerogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KAU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2KAU FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene><br>
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=KCX:LYSINE+NZ-CARBOXYLIC+ACID'>KCX</scene></td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">UREC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=548 Enterobacter aerogenes]), UREB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=548 Enterobacter aerogenes]), UREA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=548 Enterobacter aerogenes])</td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Urease Urease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.1.5 3.5.1.5] </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=2kau FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2kau OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2kau RCSB], [http://www.ebi.ac.uk/pdbsum/2kau 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/ka/2kau_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 ==
The crystal structure of urease from Klebsiella aerogenes has been determined at 2.2 A resolution and refined to an R factor of 18.2 percent. The enzyme contains four structural domains: three with novel folds playing structural roles, and an (alpha beta)8 barrel domain, which contains the bi-nickel center. The two active site nickels are 3.5 A apart. One nickel ion is coordinated by three ligands (with low occupancy of a fourth ligand) and the second is coordinated by five ligands. A carbamylated lysine provides an oxygen ligand to each nickel, explaining why carbon dioxide is required for the activation of urease apoenzyme. The structure is compatible with a catalytic mechanism whereby urea ligates Ni-1 to complete its tetrahedral coordination and a hydroxide ligand of Ni-2 attacks the carbonyl carbon. A surprisingly high structural similarity between the urease catalytic domain and that of the zinc-dependent adenosine deaminase reveals a remarkable example of active site divergence.


{{STRUCTURE_2kau|  PDB=2kau  |  SCENE=  }}
The crystal structure of urease from Klebsiella aerogenes.,Jabri E, Carr MB, Hausinger RP, Karplus PA Science. 1995 May 19;268(5213):998-1004. PMID:7754395<ref>PMID:7754395</ref>


===THE CRYSTAL STRUCTURE OF UREASE FROM KLEBSIELLA AEROGENES AT 2.2 ANGSTROMS RESOLUTION===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_7754395}}
 
==About this Structure==
[[2kau]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Enterobacter_aerogenes Enterobacter aerogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KAU OCA].


==See Also==
==See Also==
*[[Urease|Urease]]
*[[Urease|Urease]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:007754395</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Enterobacter aerogenes]]
[[Category: Enterobacter aerogenes]]
[[Category: Urease]]
[[Category: Urease]]
Retrieved from "https://proteopedia.org/2kau"