View source for 3doo


==Crystal structure of shikimate dehydrogenase from Staphylococcus epidermidis complexed with shikimate==
<StructureSection load='3doo' size='340' side='right'caption='[[3doo]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3doo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_epidermidis_RP62A Staphylococcus epidermidis RP62A]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DOO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DOO 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=SKM:(3R,4S,5R)-3,4,5-TRIHYDROXYCYCLOHEX-1-ENE-1-CARBOXYLIC+ACID'>SKM</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=3doo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3doo OCA], [https://pdbe.org/3doo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3doo RCSB], [https://www.ebi.ac.uk/pdbsum/3doo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3doo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AROE_STAEQ AROE_STAEQ] 
== 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/do/3doo_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=3doo ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Shikimate dehydrogenase (SDH) catalyzes the NADPH-dependent reduction of 3-dehydroshikimate to shikimate in the shikimate pathway. In this study, we determined the kinetic properties and crystal structures of Staphylococcus epidermidis SDH (SeSDH) both in its ligand-free form and in complex with shikimate. SeSDH has a k(cat) of 22.8 s(-1) and a K(m) of 73 mum towards shikimate, and a K(m) of 100 microM towards NADP. The overall folding of SeSDH comprises the N-terminal alpha/beta domain for substrate binding and the C-terminal Rossmann fold for NADP binding. The active site is within a large groove between the two domains. Residue Tyr211, normally regarded as important for substrate binding, does not interact with shikimate in the binary SeSDH-shikimate complex structure. However, the Y211F mutation leads to a significant decrease in k(cat) and a minor increase in the K(m) for shikimate. The results indicate that the main function of Tyr211 may be to stabilize the catalytic intermediate during catalysis. The NADP-binding domain of SeSDH is less conserved. The usually long helix specifically recognizing the adenine ribose phosphate is substituted with a short 3(10) helix in the NADP-binding domain. Moreover, the interdomain angle of SeSDH is the widest among all known SDH structures, indicating an inactive 'open' state of the SeSDH structure. Thus, a 'closing' process might occur upon NADP binding to bring the cofactor close to the substrate for catalysis.

X-ray crystallographic and enzymatic analyses of shikimate dehydrogenase from Staphylococcus epidermidis.,Han C, Hu T, Wu D, Qu S, Zhou J, Ding J, Shen X, Qu D, Jiang H FEBS J. 2009 Feb;276(4):1125-39. PMID:19215302<ref>PMID:19215302</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3doo" style="background-color:#fffaf0;"></div>

==See Also==
*[[Shikimate dehydrogenase 3D structures|Shikimate dehydrogenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Staphylococcus epidermidis RP62A]]
[[Category: Han C]]
[[Category: Hu T]]
[[Category: Jiang H]]
[[Category: Qu D]]
[[Category: Shen X]]
[[Category: Wu D]]
[[Category: Zhou J]]