4ubl: Difference between revisions
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The | ==KINETIC CRYSTALLOGRAPHY OF ALPHA_E7-CARBOXYLESTERSE FROM LUCILLA CUPRINA - ABSORBED X-RAY DOSE 9.26 MGy== | ||
<StructureSection load='4ubl' size='340' side='right'caption='[[4ubl]], [[Resolution|resolution]] 2.36Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4ubl]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Lucilia_cuprina Lucilia cuprina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4UBL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4UBL 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]] 2.36Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DPF:DIETHYL+HYDROGEN+PHOSPHATE'>DPF</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=4ubl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ubl OCA], [https://pdbe.org/4ubl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ubl RCSB], [https://www.ebi.ac.uk/pdbsum/4ubl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ubl ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q25252_LUCCU Q25252_LUCCU] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The proper function of enzymes often depends upon their efficient interconversion between particular conformational sub-states on a free-energy landscape. Experimentally characterizing these sub-states is challenging, which has limited our understanding of the role of protein dynamics in many enzymes. Here, we have used a combination of kinetic crystallography and detailed analysis of crystallographic protein ensembles to map the accessible conformational landscape of an insect carboxylesterase (LcalphaE7) as it traverses all steps in its catalytic cycle. LcalphaE7 is of special interest because of its evolving role in organophosphate insecticide resistance. Our results reveal that a dynamically coupled network of residues extends from the substrate-binding site to a surface loop. Interestingly, the coupling of this network that is apparent in the apoenzyme appears to be reduced in the phosphorylated enzyme intermediate. Altogether, the results of this work highlight the importance of protein dynamics to enzyme function and the evolution of new activity. | |||
Mapping the Accessible Conformational Landscape of an Insect Carboxylesterase Using Conformational Ensemble Analysis and Kinetic Crystallography.,Correy GJ, Carr PD, Meirelles T, Mabbitt PD, Fraser NJ, Weik M, Jackson CJ Structure. 2016 Jun 7;24(6):977-87. doi: 10.1016/j.str.2016.04.009. Epub 2016 May, 19. PMID:27210287<ref>PMID:27210287</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4ubl" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Lucilia cuprina]] | |||
[[Category: Carr PD]] | |||
[[Category: Correy G]] | |||
[[Category: Huber T]] | |||
[[Category: Jackson CJ]] | |||
[[Category: Meirelles T]] | |||
[[Category: Weik M]] | |||
Latest revision as of 18:20, 8 November 2023
KINETIC CRYSTALLOGRAPHY OF ALPHA_E7-CARBOXYLESTERSE FROM LUCILLA CUPRINA - ABSORBED X-RAY DOSE 9.26 MGyKINETIC CRYSTALLOGRAPHY OF ALPHA_E7-CARBOXYLESTERSE FROM LUCILLA CUPRINA - ABSORBED X-RAY DOSE 9.26 MGy
Structural highlights
FunctionPublication Abstract from PubMedThe proper function of enzymes often depends upon their efficient interconversion between particular conformational sub-states on a free-energy landscape. Experimentally characterizing these sub-states is challenging, which has limited our understanding of the role of protein dynamics in many enzymes. Here, we have used a combination of kinetic crystallography and detailed analysis of crystallographic protein ensembles to map the accessible conformational landscape of an insect carboxylesterase (LcalphaE7) as it traverses all steps in its catalytic cycle. LcalphaE7 is of special interest because of its evolving role in organophosphate insecticide resistance. Our results reveal that a dynamically coupled network of residues extends from the substrate-binding site to a surface loop. Interestingly, the coupling of this network that is apparent in the apoenzyme appears to be reduced in the phosphorylated enzyme intermediate. Altogether, the results of this work highlight the importance of protein dynamics to enzyme function and the evolution of new activity. Mapping the Accessible Conformational Landscape of an Insect Carboxylesterase Using Conformational Ensemble Analysis and Kinetic Crystallography.,Correy GJ, Carr PD, Meirelles T, Mabbitt PD, Fraser NJ, Weik M, Jackson CJ Structure. 2016 Jun 7;24(6):977-87. doi: 10.1016/j.str.2016.04.009. Epub 2016 May, 19. PMID:27210287[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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