1ggv: Difference between revisions
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==CRYSTAL STRUCTURE OF THE C123S MUTANT OF DIENELACTONE HYDROLASE (DLH) BOUND WITH THE PMS MOIETY OF THE PROTEASE INHIBITOR, PHENYLMETHYLSULFONYL FLUORIDE (PMSF)== | ==CRYSTAL STRUCTURE OF THE C123S MUTANT OF DIENELACTONE HYDROLASE (DLH) BOUND WITH THE PMS MOIETY OF THE PROTEASE INHIBITOR, PHENYLMETHYLSULFONYL FLUORIDE (PMSF)== | ||
<StructureSection load='1ggv' size='340' side='right' caption='[[1ggv]], [[Resolution|resolution]] 2.50Å' scene=''> | <StructureSection load='1ggv' size='340' side='right' caption='[[1ggv]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1ggv]] is a 1 chain structure | <table><tr><td colspan='2'>[[1ggv]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GGV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GGV FirstGlance]. <br> | ||
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEB:O-BENZYLSULFONYL-SERINE'>SEB</scene></td></tr> | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEB:O-BENZYLSULFONYL-SERINE'>SEB</scene></td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carboxymethylenebutenolidase Carboxymethylenebutenolidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.45 3.1.1.45] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carboxymethylenebutenolidase Carboxymethylenebutenolidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.45 3.1.1.45] </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=1ggv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ggv OCA], [http://pdbe.org/1ggv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ggv RCSB], [http://www.ebi.ac.uk/pdbsum/1ggv PDBsum]</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=1ggv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ggv OCA], [http://pdbe.org/1ggv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ggv RCSB], [http://www.ebi.ac.uk/pdbsum/1ggv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ggv ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </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/ | </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=1ggv ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Carboxymethylenebutenolidase]] | [[Category: Carboxymethylenebutenolidase]] | ||
[[Category: Barton, J D]] | [[Category: Barton, J D]] | ||
Revision as of 07:36, 21 September 2017
CRYSTAL STRUCTURE OF THE C123S MUTANT OF DIENELACTONE HYDROLASE (DLH) BOUND WITH THE PMS MOIETY OF THE PROTEASE INHIBITOR, PHENYLMETHYLSULFONYL FLUORIDE (PMSF)CRYSTAL STRUCTURE OF THE C123S MUTANT OF DIENELACTONE HYDROLASE (DLH) BOUND WITH THE PMS MOIETY OF THE PROTEASE INHIBITOR, PHENYLMETHYLSULFONYL FLUORIDE (PMSF)
Structural highlights
Function[CLCD_PSEPU] Ring cleavage of cyclic ester dienelactone to produce maleylacetate. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe structure of DLH (C123S) with PMS bound was solved to 2.5 A resolution (R factor = 15.1%). PMSF in 2-propanol was delivered directly to crystals in drops and unexpectedly caused the crystals to dissolve. New crystals displaying a different morphology emerged within 2 h in situ, a phenomenon that appears to be described for the first time. The changed crystal form reflected altered crystal-packing arrangements elicited by structural changes to the DLH (C123S) molecule on binding inhibitor. The new unit cell remained in the P2(1)2(1)2(1) space group but possessed different dimensions. The structure showed that PMS binding in DLH (C123S) caused conformational changes in the active site and in four regions of the polypeptide chain that contain reverse turns. In the active site, residues with aromatic side chains were repositioned in an edge-to-face cluster around the PMS phenyl ring. Their redistribution prevented restabilization of the triad His202 side chain, which was disordered in electron-density maps. Movements of other residues in the active site were shown to be related to the four displaced regions of the polypeptide chain. Their implied synergy suggests that DLH may be able to accommodate and catalyse a range of compounds unrelated to the natural substrate owing to an inherent coordinated flexibility in its overall structure. Implications for mechanism and further engineering studies are discussed. Structure of the C123S mutant of dienelactone hydrolase (DLH) bound with the PMS moiety of the protease inhibitor phenylmethylsulfonyl fluoride (PMSF).,Robinson A, Edwards KJ, Carr PD, Barton JD, Ewart GD, Ollis DL Acta Crystallogr D Biol Crystallogr. 2000 Nov;56(Pt 11):1376-84. PMID:11053834[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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