3i4x: Difference between revisions

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{{Seed}}
[[Image:3i4x.jpg|left|200px]]


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==Crystal structure of the dimethylallyl tryptophan synthase FgaPT2 from Aspergillus fumigatus in complex with Trp and DMSPP==
The line below this paragraph, containing "STRUCTURE_3i4x", creates the "Structure Box" on the page.
<StructureSection load='3i4x' size='340' side='right'caption='[[3i4x]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3i4x]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspergillus_fumigatus Aspergillus fumigatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3I4X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3I4X FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DST:DIMETHYLALLYL+S-THIOLODIPHOSPHATE'>DST</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=TRP:TRYPTOPHAN'>TRP</scene></td></tr>
{{STRUCTURE_3i4x|  PDB=3i4x  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3i4x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3i4x OCA], [https://pdbe.org/3i4x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3i4x RCSB], [https://www.ebi.ac.uk/pdbsum/3i4x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3i4x ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DMAW_ASPFU DMAW_ASPFU]
== 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/i4/3i4x_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=3i4x ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ergot alkaloids are toxins and important pharmaceuticals that are produced biotechnologically on an industrial scale. The first committed step of ergot alkaloid biosynthesis is catalyzed by dimethylallyl tryptophan synthase (DMATS; EC 2.5.1.34). Orthologs of DMATS are found in many fungal genomes. We report here the x-ray structure of DMATS, determined at a resolution of 1.76 A. A complex of DMATS from Aspergillus fumigatus with its aromatic substrate L-tryptophan and with an analogue of its isoprenoid substrate dimethylallyl diphosphate reveals the structural basis of this enzyme-catalyzed Friedel-Crafts reaction, which shows strict regiospecificity for position 4 of the indole nucleus of tryptophan as well as unusual independence of the presence of Mg(2+) ions. The 3D structure of DMATS belongs to a rare beta/alpha barrel fold, called prenyltransferase barrel, that was recently discovered in a small group of bacterial enzymes with no sequence similarity to DMATS. These bacterial enzymes catalyze the prenylation of aromatic substrates in the biosynthesis of secondary metabolites (i.e., a reaction similar to that of DMATS).


===Crystal structure of the dimethylallyl tryptophan synthase FgaPT2 from Aspergillus fumigatus in complex with Trp and DMSPP===
The structure of dimethylallyl tryptophan synthase reveals a common architecture of aromatic prenyltransferases in fungi and bacteria.,Metzger U, Schall C, Zocher G, Unsold I, Stec E, Li SM, Heide L, Stehle T Proc Natl Acad Sci U S A. 2009 Aug 25;106(34):14309-14. Epub 2009 Aug 12. PMID:19706516<ref>PMID:19706516</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
==About this Structure==
</div>
3I4X is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Aspergillus_fumigatus Aspergillus fumigatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3I4X OCA].
<div class="pdbe-citations 3i4x" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Aspergillus fumigatus]]
[[Category: Aspergillus fumigatus]]
[[Category: Tryptophan dimethylallyltransferase]]
[[Category: Large Structures]]
[[Category: Schall, C.]]
[[Category: Schall C]]
[[Category: Stehle, T.]]
[[Category: Stehle T]]
[[Category: Zocher, G.]]
[[Category: Zocher G]]
[[Category: Alkaloid metabolism]]
[[Category: Dimethylallyl s-thiolodiphosphate complex]]
[[Category: Dimethylallyl tryptophan synthase]]
[[Category: Prenyl transferase]]
[[Category: Pt barrel]]
[[Category: Transferase]]
[[Category: Tryptophan complex]]
 
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