5olu
From Proteopedia
(Difference between revisions)
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<StructureSection load='5olu' size='340' side='right' caption='[[5olu]], [[Resolution|resolution]] 1.80Å' scene=''> | <StructureSection load='5olu' size='340' side='right' caption='[[5olu]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[5olu]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5OLU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5OLU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5olu]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_coagulans_atcc_7050 Bacillus coagulans atcc 7050]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5OLU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5OLU FirstGlance]. <br> |
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BF29_2874 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1121088 Bacillus coagulans ATCC 7050])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5olu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5olu OCA], [http://pdbe.org/5olu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5olu RCSB], [http://www.ebi.ac.uk/pdbsum/5olu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5olu ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5olu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5olu OCA], [http://pdbe.org/5olu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5olu RCSB], [http://www.ebi.ac.uk/pdbsum/5olu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5olu ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Microbial carboxylesterases are important biocatalysts that selectively hydrolyze an extensive range of esters. Here, we report the biochemical and structural characterization of an atypical carboxylesterase from Bacillus coagulans (BCE), endowed with high enantioselectivity towards different 1,2-O-isopropylideneglycerol (IPG or solketal) esters. BCE efficiently catalyzes the production of enantiopure (S)-IPG, a chiral building block for the synthesis of beta-blockers, glycerophospholipids and prostaglandins; efficient hydrolysis was observed up to 65 degrees C. To gain insight into the mechanistic bases of such enantioselectivity, we solved the crystal structures of BCE in apo- and glycerol-bound forms at resolutions of 1.9 A and 1.8 A, respectively. In silico docking studies on the BCE structure confirmed that IPG esters with small acyl chains (</=C6) were easily accommodated in the active site pocket, indicating that small conformational changes are necessary to accept longer substrates. Furthermore, docking studies suggested that enantioselectivity may be due to an improved stabilization of the tetrahedral reaction intermediate for the S-enantiomer. Contrary to the above functional data implying non-lipolytic functions, BCE displays a lipase-like 3D-structure that hosts a 'lid' domain capping the main entrance to the active site. In lipases the lid mediates catalysis through interfacial activation, a process that we did not observe for BCE. Overall, we present the functional-structural properties of an atypical carboxyl esterase that has non-lipase like functions, yet possesses a lipase-like 3D fold. Our data provide original enzymatic information in view of BCE applications as an inexpensive, efficient biocatalyst for the production of enantiopure (S)-IPG. This article is protected by copyright. All rights reserved. | ||
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| + | A stereospecific carboxyl esterase from Bacillus coagulans hosting non-lipase activity within a lipase-like fold.,De Vitis V, Nakhnoukh C, Pinto A, Contente ML, Barbiroli A, Milani M, Bolognesi M, Molinari F, Gourlay LJ, Romano D FEBS J. 2017 Dec 26. doi: 10.1111/febs.14368. PMID:29278448<ref>PMID:29278448</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5olu" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Bacillus coagulans atcc 7050]] | ||
[[Category: Bolognesi, M]] | [[Category: Bolognesi, M]] | ||
[[Category: Gourlay, L J]] | [[Category: Gourlay, L J]] | ||
Revision as of 05:57, 3 January 2018
The crystal structure of a highly thermostable carboxyl esterase from Bacillus coagulans in complex with glycerol
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