4okz: Difference between revisions
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New page: '''Unreleased structure''' The entry 4okz is ON HOLD Authors: Baer, P., Rabe, P., Fischer, K., Citron, C.A., Klapschinski, T., Groll, M., Dickschat, J.S. Description: Selinadiene Synth... |
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The | ==Selinadiene Synthase in complex with dihydrofarnesyl pyrophosphate== | ||
<StructureSection load='4okz' size='340' side='right'caption='[[4okz]], [[Resolution|resolution]] 1.90Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4okz]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_pristinaespiralis_ATCC_25486 Streptomyces pristinaespiralis ATCC 25486]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OKZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OKZ 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]] 1.9Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3E9:(3S,6E)-3,7,11-TRIMETHYLDODECA-6,10-DIEN-1-YL+TRIHYDROGEN+DIPHOSPHATE'>3E9</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=4okz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4okz OCA], [https://pdbe.org/4okz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4okz RCSB], [https://www.ebi.ac.uk/pdbsum/4okz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4okz ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/SEDS_STRE2 SEDS_STRE2] Catalyzes the conversion of (2E,6E)-farnesyl diphosphate (FPP) to yield the bicyclic sesquiterpene selina-4(15),7(11)-diene via a 1,10-cyclization, which requires the abstraction of the pyrophosphate from FPP leading to a (E,E)-germacradienyl cation (PubMed:23307484, PubMed:24890698). The only accepted substrate is (2E,6E)-farnesyl diphosphate (FPP) (PubMed:23307484, PubMed:24890698).<ref>PMID:23307484</ref> <ref>PMID:24890698</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
We present crystallographic and functional data of selina-4(15),7(11)-diene synthase (SdS) from Streptomyces pristinaespiralis in its open and closed (ligand-bound) conformation. We could identify an induced-fit mechanism by elucidating a rearrangement of the G1/2 helix-break motif upon substrate binding. This rearrangement highlights a novel effector triad comprising the pyrophosphate sensor Arg178, the linker Asp181, and the effector Gly182-O. This structural motif is strictly conserved in class I terpene cyclases from bacteria, fungi, and plants, including epi-isozizaene synthase (3KB9), aristolochene synthase (4KUX), bornyl diphosphate synthase (1N20), limonene synthase (2ONG), 5-epi-aristolochene synthase (5EAT), and taxa-4(5),11(12)-diene synthase (3P5R). An elaborate structure-based mutagenesis in combination with analysis of the distinct product spectra confirmed the mechanistic models of carbocation formation and stabilization in SdS. | |||
Induced-Fit Mechanism in Class I Terpene Cyclases.,Baer P, Rabe P, Fischer K, Citron CA, Klapschinski TA, Groll M, Dickschat JS Angew Chem Int Ed Engl. 2014 May 30. doi: 10.1002/anie.201403648. PMID:24890698<ref>PMID:24890698</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4okz" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Streptomyces pristinaespiralis ATCC 25486]] | |||
[[Category: Baer P]] | |||
[[Category: Citron CA]] | |||
[[Category: Dickschat JS]] | |||
[[Category: Fischer K]] | |||
[[Category: Groll M]] | |||
[[Category: Klapschinski T]] | |||
[[Category: Rabe P]] | |||
Latest revision as of 17:15, 20 September 2023
Selinadiene Synthase in complex with dihydrofarnesyl pyrophosphate
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