5eas

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[[Image:5eas.png|left|200px]]
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==5-EPI-ARISTOLOCHENE SYNTHASE FROM NICOTIANA TABACUM==
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<StructureSection load='5eas' size='340' side='right' caption='[[5eas]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[5eas]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/American_tobacco American tobacco]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5EAS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5EAS FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5eas FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5eas OCA], [http://www.rcsb.org/pdb/explore.do?structureId=5eas RCSB], [http://www.ebi.ac.uk/pdbsum/5eas PDBsum]</span></td></tr>
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<table>
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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/ea/5eas_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/chain_selection.php?pdb_ID=2ata 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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Terpene cyclases catalyze the synthesis of cyclic terpenes with 10-, 15-, and 20-carbon acyclic isoprenoid diphosphates as substrates. Plants have been a source of these natural products by providing a homologous set of terpene synthases. The crystal structures of 5-epi-aristolochene synthase, a sesquiterpene cyclase from tobacco, alone and complexed separately with two farnesyl diphosphate analogs were analyzed. These structures reveal an unexpected enzymatic mechanism for the synthesis of the bicyclic product, 5-epi-aristolochene, and provide a basis for understanding the stereochemical selectivity displayed by other cyclases in the biosynthesis of pharmacologically important cyclic terpenes. As such, these structures provide templates for the engineering of novel terpene cyclases.
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<!--
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Structural basis for cyclic terpene biosynthesis by tobacco 5-epi-aristolochene synthase.,Starks CM, Back K, Chappell J, Noel JP Science. 1997 Sep 19;277(5333):1815-20. PMID:9295271<ref>PMID:9295271</ref>
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The line below this paragraph, containing "STRUCTURE_5eas", creates the "Structure Box" on the page.
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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or leave the SCENE parameter empty for the default display.
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-->
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{{STRUCTURE_5eas| PDB=5eas | SCENE= }}
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===5-EPI-ARISTOLOCHENE SYNTHASE FROM NICOTIANA TABACUM===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
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<!--
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<references/>
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The line below this paragraph, {{ABSTRACT_PUBMED_9295271}}, adds the Publication Abstract to the page
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__TOC__
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(as it appears on PubMed at http://www.pubmed.gov), where 9295271 is the PubMed ID number.
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</StructureSection>
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-->
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[[Category: American tobacco]]
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{{ABSTRACT_PUBMED_9295271}}
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==About this Structure==
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[[5eas]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Nicotiana_tabacum Nicotiana tabacum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5EAS OCA].
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==Reference==
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<ref group="xtra">PMID:009295271</ref><references group="xtra"/>
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[[Category: Nicotiana tabacum]]
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[[Category: Back, K.]]
[[Category: Back, K.]]
[[Category: Chappell, J.]]
[[Category: Chappell, J.]]

Revision as of 08:02, 5 June 2014

5-EPI-ARISTOLOCHENE SYNTHASE FROM NICOTIANA TABACUM

5eas, resolution 2.25Å

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