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2q0q
From Proteopedia
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| - | [[Image:2q0q.jpg|left|200px]] | ||
| - | + | ==Structure of the Native M. Smegmatis Aryl Esterase== | |
| - | + | <StructureSection load='2q0q' size='340' side='right'caption='[[2q0q]], [[Resolution|resolution]] 1.50Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | | | + | <table><tr><td colspan='2'>[[2q0q]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_smegmatis"_trevisan_1889 "bacillus smegmatis" trevisan 1889]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Q0Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2Q0Q FirstGlance]. <br> |
| - | | | + | </td></tr><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=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | | | + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> |
| - | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2q0s|2q0s]]</div></td></tr> | |
| - | + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Arylesterase Arylesterase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.2 3.1.1.2] </span></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=2q0q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q0q OCA], [https://pdbe.org/2q0q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2q0q RCSB], [https://www.ebi.ac.uk/pdbsum/2q0q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2q0q ProSAT]</span></td></tr> | |
| - | + | </table> | |
| - | + | == Evolutionary Conservation == | |
| - | == | + | [[Image:Consurf_key_small.gif|200px|right]] |
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/q0/2q0q_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=2q0q ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
The unusual architecture of the enzyme (MsAcT) isolated from Mycobacterium smegmatis forms the mechanistic basis for favoring alcoholysis over hydrolysis in water. Unlike hydrolases that perform alcoholysis only under anhydrous conditions, MsAcT demonstrates alcoholysis in substantially aqueous media and, in the presence of hydrogen peroxide, has a perhydrolysis:hydrolysis ratio 50-fold greater than that of the best lipase tested. The crystal structures of the apoenzyme and an inhibitor-bound form have been determined to 1.5 A resolution. MsAcT is an octamer in the asymmetric unit and forms a tightly associated aggregate in solution. Relative to other structurally similar monomers, MsAcT contains several insertions that contribute to the oligomerization and greatly restrict the shape of the active site, thereby limiting its accessibility. These properties create an environment by which MsAcT can catalyze transesterification reactions in an aqueous medium and suggests how a serine hydrolase can be engineered to be an efficient acyltransferase. | The unusual architecture of the enzyme (MsAcT) isolated from Mycobacterium smegmatis forms the mechanistic basis for favoring alcoholysis over hydrolysis in water. Unlike hydrolases that perform alcoholysis only under anhydrous conditions, MsAcT demonstrates alcoholysis in substantially aqueous media and, in the presence of hydrogen peroxide, has a perhydrolysis:hydrolysis ratio 50-fold greater than that of the best lipase tested. The crystal structures of the apoenzyme and an inhibitor-bound form have been determined to 1.5 A resolution. MsAcT is an octamer in the asymmetric unit and forms a tightly associated aggregate in solution. Relative to other structurally similar monomers, MsAcT contains several insertions that contribute to the oligomerization and greatly restrict the shape of the active site, thereby limiting its accessibility. These properties create an environment by which MsAcT can catalyze transesterification reactions in an aqueous medium and suggests how a serine hydrolase can be engineered to be an efficient acyltransferase. | ||
| - | + | Structure of a novel enzyme that catalyzes acyl transfer to alcohols in aqueous conditions.,Mathews I, Soltis M, Saldajeno M, Ganshaw G, Sala R, Weyler W, Cervin MA, Whited G, Bott R Biochemistry. 2007 Aug 7;46(31):8969-79. Epub 2007 Jul 18. PMID:17636869<ref>PMID:17636869</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| + | <div class="pdbe-citations 2q0q" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Bacillus smegmatis trevisan 1889]] | ||
[[Category: Arylesterase]] | [[Category: Arylesterase]] | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | + | [[Category: Bott, R]] | |
| - | [[Category: Bott, R | + | [[Category: Cervin, M A]] |
| - | [[Category: Cervin, M A | + | [[Category: Ganshaw, G]] |
| - | [[Category: Ganshaw, G | + | [[Category: Mathews, I I]] |
| - | [[Category: Mathews, I I | + | [[Category: Sala, R]] |
| - | [[Category: Sala, R | + | [[Category: Saldajeno, M]] |
| - | [[Category: Saldajeno, M | + | [[Category: Soltis, M]] |
| - | [[Category: Soltis, M | + | [[Category: Weyler, W]] |
| - | [[Category: Weyler, W | + | [[Category: Whited, G]] |
| - | [[Category: Whited, G | + | [[Category: Acyl transfer]] |
| - | [[Category: | + | [[Category: Aryl esterase]] |
| - | [[Category: | + | [[Category: Hydrolase]] |
| - | [[Category: | + | [[Category: Oligomeric enzyme]] |
| - | [[Category: | + | [[Category: Sgnh hydrolase]] |
| - | + | ||
| - | [[Category: | + | |
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Current revision
Structure of the Native M. Smegmatis Aryl Esterase
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