View source for 2px6


==Crystal structure of the thioesterase domain of human fatty acid synthase inhibited by Orlistat==
<StructureSection load='2px6' size='340' side='right'caption='[[2px6]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2px6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PX6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PX6 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DH9:(2S,3S,5S)-5-[(N-FORMYL-L-LEUCYL)OXY]-2-HEXYL-3-HYDROXYHEXADECANOIC+ACID'>DH9</scene>, <scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FAS ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Fatty-acid_synthase Fatty-acid synthase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.85 2.3.1.85] </span></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=2px6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2px6 OCA], [https://pdbe.org/2px6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2px6 RCSB], [https://www.ebi.ac.uk/pdbsum/2px6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2px6 ProSAT]</span></td></tr>
</table>
== Function ==
[[https://www.uniprot.org/uniprot/FAS_HUMAN FAS_HUMAN]] Fatty acid synthetase catalyzes the formation of long-chain fatty acids from acetyl-CoA, malonyl-CoA and NADPH. This multifunctional protein has 7 catalytic activities and an acyl carrier protein. 
== 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/px/2px6_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=2px6 ConSurf].
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== Publication Abstract from PubMed ==
Human fatty acid synthase (FAS) is uniquely expressed at high levels in many tumor types. Pharmacological inhibition of FAS therefore represents an important therapeutic opportunity. The drug Orlistat, which has been approved by the US Food and Drug Administration, inhibits FAS, induces tumor cell-specific apoptosis and inhibits the growth of prostate tumor xenografts. We determined the 2.3-A-resolution crystal structure of the thioesterase domain of FAS inhibited by Orlistat. Orlistat was captured in the active sites of two thioesterase molecules as a stable acyl-enzyme intermediate and as the hydrolyzed product. The details of these interactions reveal the molecular basis for inhibition and suggest a mechanism for acyl-chain length discrimination during the FAS catalytic cycle. Our findings provide a foundation for the development of new cancer drugs that target FAS.

Crystal structure of the thioesterase domain of human fatty acid synthase inhibited by Orlistat.,Pemble CW 4th, Johnson LC, Kridel SJ, Lowther WT Nat Struct Mol Biol. 2007 Aug;14(8):704-9. Epub 2007 Jul 8. PMID:17618296<ref>PMID:17618296</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2px6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Fatty acid synthase 3D structures|Fatty acid synthase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Fatty-acid synthase]]
[[Category: Human]]
[[Category: Large Structures]]
[[Category: IV, C W.Pemble]]
[[Category: Johnson, L C]]
[[Category: Kridel, S J]]
[[Category: Lowther, W T]]
[[Category: Drug complex]]
[[Category: Fatty acid synthase]]
[[Category: Orlistat]]
[[Category: Tetrahydrolipstatin]]
[[Category: Thioesaterse domain]]
[[Category: Transferase]]