View source for 1w85


==The crystal structure of pyruvate dehydrogenase E1 bound to the peripheral subunit binding domain of E2==
<StructureSection load='1w85' size='340' side='right'caption='[[1w85]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1w85]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. The September 2012 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Pyruvate Dehydrogenase Complex''  by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2012_9 10.2210/rcsb_pdb/mom_2012_9]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W85 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1W85 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=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=TPP:THIAMINE+DIPHOSPHATE'>TPP</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=1w85 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w85 OCA], [https://pdbe.org/1w85 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1w85 RCSB], [https://www.ebi.ac.uk/pdbsum/1w85 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1w85 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ODPA_GEOSE ODPA_GEOSE] 
== 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/w8/1w85_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=1w85 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Thiamine diphosphate (ThDP) is used as a cofactor in many key metabolic enzymes. We present evidence that the ThDPs in the two active sites of the E1 (EC 1.2.4.1) component of the pyruvate dehydrogenase complex communicate over a distance of 20 angstroms by reversibly shuttling a proton through an acidic tunnel in the protein. This "proton wire" permits the co-factors to serve reciprocally as general acid/base in catalysis and to switch the conformation of crucial active-site peptide loops. This synchronizes the progression of chemical events and can account for the oligomeric organization, conformational asymmetry, and "ping-pong" kinetic properties of E1 and other thiamine-dependent enzymes.

A molecular switch and proton wire synchronize the active sites in thiamine enzymes.,Frank RA, Titman CM, Pratap JV, Luisi BF, Perham RN Science. 2004 Oct 29;306(5697):872-6. PMID:15514159<ref>PMID:15514159</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1w85" style="background-color:#fffaf0;"></div>

==See Also==
*[[Dihydrolipoamide acetyltransferase 3D structures|Dihydrolipoamide acetyltransferase 3D structures]]
*[[Pyruvate dehydrogenase 3D structures|Pyruvate dehydrogenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Geobacillus stearothermophilus]]
[[Category: Large Structures]]
[[Category: Pyruvate Dehydrogenase Complex]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Frank RAW]]
[[Category: Luisi BF]]
[[Category: Pei XY]]
[[Category: Perham RN]]
[[Category: Pratap JV]]