1jfg

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[[Image:1jfg.jpg|left|200px]]
 
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==TRICHODIENE SYNTHASE FROM FUSARIUM SPOROTRICHIOIDES COMPLEXED WITH DIPHOSPHATE==
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The line below this paragraph, containing "STRUCTURE_1jfg", creates the "Structure Box" on the page.
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<StructureSection load='1jfg' size='340' side='right'caption='[[1jfg]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1jfg]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Fusarium_sporotrichioides Fusarium sporotrichioides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JFG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JFG FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=POP:PYROPHOSPHATE+2-'>POP</scene></td></tr>
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{{STRUCTURE_1jfg| PDB=1jfg | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jfg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jfg OCA], [https://pdbe.org/1jfg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jfg RCSB], [https://www.ebi.ac.uk/pdbsum/1jfg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jfg ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TRI5_FUSSP TRI5_FUSSP] TS is a member of the terpene cyclase group of enzymes. It catalyzes the isomerization and cyclization of farnesyl pyro-phosphate to form trichodiene, the first cyclic intermediate in the biosynthetic pathway for trichothecenes. It serves to branch trichothecene biosynthesis from the isoprenoid pathway.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jf/1jfg_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1jfg ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The x-ray crystal structure of recombinant trichodiene synthase from Fusarium sporotrichioides has been determined to 2.5-A resolution, both unliganded and complexed with inorganic pyrophosphate. This reaction product coordinates to three Mg(2+) ions near the mouth of the active site cleft. A comparison of the liganded and unliganded structures reveals a ligand-induced conformational change that closes the mouth of the active site cleft. Binding of the substrate farnesyl diphosphate similarly may trigger this conformational change, which would facilitate catalysis by protecting reactive carbocationic intermediates in the cyclization cascade. Trichodiene synthase also shares significant structural similarity with other sesquiterpene synthases despite a lack of significant sequence identity. This similarity indicates divergence from a common ancestor early in the evolution of terpene biosynthesis.
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'''TRICHODIENE SYNTHASE FROM FUSARIUM SPOROTRICHIOIDES COMPLEXED WITH DIPHOSPHATE'''
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Structure of trichodiene synthase from Fusarium sporotrichioides provides mechanistic inferences on the terpene cyclization cascade.,Rynkiewicz MJ, Cane DE, Christianson DW Proc Natl Acad Sci U S A. 2001 Nov 20;98(24):13543-8. Epub 2001 Nov 6. PMID:11698643<ref>PMID:11698643</ref>
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==Overview==
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The x-ray crystal structure of recombinant trichodiene synthase from Fusarium sporotrichioides has been determined to 2.5-A resolution, both unliganded and complexed with inorganic pyrophosphate. This reaction product coordinates to three Mg(2+) ions near the mouth of the active site cleft. A comparison of the liganded and unliganded structures reveals a ligand-induced conformational change that closes the mouth of the active site cleft. Binding of the substrate farnesyl diphosphate similarly may trigger this conformational change, which would facilitate catalysis by protecting reactive carbocationic intermediates in the cyclization cascade. Trichodiene synthase also shares significant structural similarity with other sesquiterpene synthases despite a lack of significant sequence identity. This similarity indicates divergence from a common ancestor early in the evolution of terpene biosynthesis.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1JFG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Fusarium_sporotrichioides Fusarium sporotrichioides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JFG OCA].
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</div>
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<div class="pdbe-citations 1jfg" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Structure of trichodiene synthase from Fusarium sporotrichioides provides mechanistic inferences on the terpene cyclization cascade., Rynkiewicz MJ, Cane DE, Christianson DW, Proc Natl Acad Sci U S A. 2001 Nov 20;98(24):13543-8. Epub 2001 Nov 6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11698643 11698643]
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*[[Trichodiene synthase|Trichodiene synthase]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Fusarium sporotrichioides]]
[[Category: Fusarium sporotrichioides]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Trichodiene synthase]]
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[[Category: Cane DE]]
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[[Category: Cane, D E.]]
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[[Category: Christianson DW]]
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[[Category: Christianson, D W.]]
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[[Category: Rynkiewicz MJ]]
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[[Category: Rynkiewicz, M J.]]
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[[Category: Terpenoid synthase fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 21:09:36 2008''
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Current revision

TRICHODIENE SYNTHASE FROM FUSARIUM SPOROTRICHIOIDES COMPLEXED WITH DIPHOSPHATE

PDB ID 1jfg

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