View source for 1uwk


==The High Resolution Structure of Urocanate Hydratase from Pseudomonas putida in complex with urocanate==
<StructureSection load='1uwk' size='340' side='right'caption='[[1uwk]], [[Resolution|resolution]] 1.19&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1uwk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_putida Pseudomonas putida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UWK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UWK 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]] 1.19&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=URO:(2E)-3-(1H-IMIDAZOL-4-YL)ACRYLIC+ACID'>URO</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=1uwk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uwk OCA], [https://pdbe.org/1uwk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1uwk RCSB], [https://www.ebi.ac.uk/pdbsum/1uwk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1uwk ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HUTU_PSEPU HUTU_PSEPU] 
== 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/uw/1uwk_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/main_output.php?pdb_ID=1uwk ConSurf].
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== Publication Abstract from PubMed ==
Urocanase (EC 4.2.1.49) from Pseudomonas putida was crystallized after removing one of the seven free thiol groups. The crystal structure was solved by multiwavelength anomalous diffraction (MAD) using a seleno-methionine derivative and then refined at 1.14 A resolution. The enzyme is a symmetric homodimer of 2 x 557 amino acid residues with tightly bound NAD+ cofactors. Each subunit consists of a typical NAD-binding domain inserted into a larger core domain that forms the dimer interface. The core domain has a novel chain fold and accommodates the substrate urocanate in a surface depression. The NAD domain sits like a lid on the core domain depression and points with the nicotinamide group to the substrate. Substrate, nicotinamide and five water molecules are completely sequestered in a cavity. Most likely, one of these water molecules hydrates the substrate during catalysis. This cavity has to open for substrate passage, which probably means lifting the NAD domain. The observed atomic arrangement at the active center gives rise to a detailed proposal for the catalytic mechanism that is consistent with published chemical data. As expected, the variability of the residues involved is low, as derived from a family of 58 proteins annotated as urocanases in the data banks. However, one well-embedded member of this family showed a significant deviation at the active center indicating an incorrect annotation.

Structure and action of urocanase.,Kessler D, Retey J, Schulz GE J Mol Biol. 2004 Sep 3;342(1):183-94. PMID:15313616<ref>PMID:15313616</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pseudomonas putida]]
[[Category: Kessler D]]
[[Category: Retey J]]
[[Category: Schulz GE]]