View source for 5nx7


==Crystal structure of 1,8-cineole synthase from Streptomyces clavuligerus in complex with 2-fluoroneryl diphosphate and 2-fluorogeranyl diphosphate==
<StructureSection load='5nx7' size='340' side='right'caption='[[5nx7]], [[Resolution|resolution]] 1.51&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5nx7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_clavuligerus Streptomyces clavuligerus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5NX7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5NX7 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]] 1.51&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0FV:(2Z)-2-FLUORO-3,7-DIMETHYLOCTA-2,6-DIEN-1-YL+TRIHYDROGEN+DIPHOSPHATE'>0FV</scene>, <scene name='pdbligand=9D2:2-ethyl-2-(hydroxymethyl)propane-1,3-diol'>9D2</scene>, <scene name='pdbligand=LA6:(2E)-2-FLUORO-3,7-DIMETHYLOCTA-2,6-DIEN-1-YL+TRIHYDROGEN+DIPHOSPHATE'>LA6</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NDS:ETHYL+DIMETHYL+AMMONIO+PROPANE+SULFONATE'>NDS</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=5nx7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5nx7 OCA], [https://pdbe.org/5nx7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5nx7 RCSB], [https://www.ebi.ac.uk/pdbsum/5nx7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5nx7 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CNSA_STRCL CNSA_STRCL] In vitro, catalyzes the formation of 1,8-cineole from geranyl diphosphate (GPP) (PubMed:21726035, PubMed:28144299, PubMed:28966840). Can also accept neryl diphosphate (NPP) as substrate to produce 1,8-cineole (PubMed:28966840).<ref>PMID:21726035</ref> <ref>PMID:28144299</ref> <ref>PMID:28966840</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Terpenoids form the largest and stereochemically most diverse class of natural products, and there is considerable interest in producing these by biocatalysis with whole cells or purified enzymes, and by metabolic engineering. The monoterpenes are an important class of terpenes and are industrially important as flavors and fragrances. We report here structures for the recently discovered Streptomyces clavuligerus monoterpene synthases linalool synthase (bLinS) and 1,8-cineole synthase (bCinS), and we show that these are active biocatalysts for monoterpene production using biocatalysis and metabolic engineering platforms. In metabolically engineered monoterpene-producing E. coli strains, use of bLinS leads to 300-fold higher linalool production compared with the corresponding plant monoterpene synthase. With bCinS, 1,8-cineole is produced with 96% purity compared to 67% from plant species. Structures of bLinS and bCinS, and their complexes with fluorinated substrate analogues, show that these bacterial monoterpene synthases are similar to previously characterized sesquiterpene synthases. Molecular dynamics simulations suggest that these monoterpene synthases do not undergo large-scale conformational changes during the reaction cycle, making them attractive targets for structured-based protein engineering to expand the catalytic scope of these enzymes toward alternative monoterpene scaffolds. Comparison of the bLinS and bCinS structures indicates how their active sites steer reactive carbocation intermediates to the desired acyclic linalool (bLinS) or bicyclic 1,8-cineole (bCinS) products. The work reported here provides the analysis of structures for this important class of monoterpene synthase. This should now guide exploitation of the bacterial enzymes as gateway biocatalysts for the production of other monoterpenes and monoterpenoids.

Structural Basis of Catalysis in the Bacterial Monoterpene Synthases Linalool Synthase and 1,8-Cineole Synthase.,Karuppiah V, Ranaghan KE, Leferink NGH, Johannissen LO, Shanmugam M, Ni Cheallaigh A, Bennett NJ, Kearsey LJ, Takano E, Gardiner JM, van der Kamp MW, Hay S, Mulholland AJ, Leys D, Scrutton NS ACS Catal. 2017 Sep 1;7(9):6268-6282. doi: 10.1021/acscatal.7b01924. Epub 2017, Aug 9. PMID:28966840<ref>PMID:28966840</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5nx7" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Streptomyces clavuligerus]]
[[Category: Karuppiah V]]
[[Category: Leys D]]
[[Category: Scrutton NS]]