4fhz
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4fhz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Cereibacter_sphaeroides Cereibacter sphaeroides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FHZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FHZ FirstGlance]. <br> | <table><tr><td colspan='2'>[[4fhz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Cereibacter_sphaeroides Cereibacter sphaeroides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FHZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FHZ FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.01Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</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=4fhz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fhz OCA], [https://pdbe.org/4fhz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fhz RCSB], [https://www.ebi.ac.uk/pdbsum/4fhz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fhz ProSAT]</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=4fhz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fhz OCA], [https://pdbe.org/4fhz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fhz RCSB], [https://www.ebi.ac.uk/pdbsum/4fhz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fhz ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/Q3J2V1_CERS4 Q3J2V1_CERS4] | [https://www.uniprot.org/uniprot/Q3J2V1_CERS4 Q3J2V1_CERS4] | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The present work created an esterase variant from Rhodobacter sphaeroides (RspE) with enhanced selectivity in hydrolytic kinetic resolutions by directed evolution. A "model" substrate, methyl mandelate, was introduced in the high-throughput screening procedure. E values of a variant CH (Asn62Cys/Leu145His) for six different esters were 10-83, which were a relative improvement compared to 2-20 for the wild type. Our subsequent crystal structure interpretation and molecular dynamics simulations helped shed light on the source of enantioselectivity modified by directed evolution. Though mutations displayed no "direct" interaction with the substrate, they were hypothesized to strengthen the intramolecular interaction in the catalytic cavity of variant. Conformation analysis revealed that the enhanced enantioselectivity of variant CH for the seven substrates applied in this study was derived from the decrease in size of the substrate binding pocket. | ||
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| - | Enhanced enantioselectivity of a carboxyl esterase from Rhodobacter sphaeroides by directed evolution.,Ma J, Wu L, Guo F, Gu J, Tang X, Jiang L, Liu J, Zhou J, Yu H Appl Microbiol Biotechnol. 2012 Sep 19. PMID:22987200<ref>PMID:22987200</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 4fhz" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Crystal structure of a carboxyl esterase at 2.0 angstrom resolution
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Categories: Cereibacter sphaeroides | Large Structures | Ma J | Wu L | Yu H | Zhou J
