5c6m: Difference between revisions
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''' | ==Crystal structure of deoxyribose-phosphate aldolase from Shewanella halifaxensis== | ||
<StructureSection load='5c6m' size='340' side='right' caption='[[5c6m]], [[Resolution|resolution]] 1.76Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5c6m]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5C6M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5C6M FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Deoxyribose-phosphate_aldolase Deoxyribose-phosphate aldolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.2.4 4.1.2.4] </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=5c6m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5c6m OCA], [http://pdbe.org/5c6m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5c6m RCSB], [http://www.ebi.ac.uk/pdbsum/5c6m PDBsum]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/DEOC_SHEHH DEOC_SHEHH]] Catalyzes a reversible aldol reaction between acetaldehyde and D-glyceraldehyde 3-phosphate to generate 2-deoxy-D-ribose 5-phosphate. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Understanding enzyme stability and activity in extremophilic organisms is of great biotechnological interest, but many questions are still unsolved. Using 2-deoxy-D-ribose-5-phosphate aldolase (DERA) as model enzyme, we have evaluated structural and functional characteristics of different orthologs from psychrophilic, mesophilic and hyperthermophilic organisms. We present the first crystal structures of psychrophilic DERAs, revealing a dimeric organization resembling their mesophilic but not their thermophilic counterparts. Conversion into monomeric proteins showed that the native dimer interface contributes to stability only in the hyperthermophilic enzymes. Nevertheless, introduction of a disulfide bridge in the interface of a psychrophilic DERA did confer increased thermostability, suggesting a strategy for rational design of more durable enzyme variants. Constraint network analysis revealed particularly sparse interactions between the substrate pocket and its surrounding alpha-helices in psychrophilic DERAs, which indicates that a more flexible active center underlies their high turnover numbers. | |||
Trading off stability against activity in extremophilic aldolases.,Dick M, Weiergraber OH, Classen T, Bisterfeld C, Bramski J, Gohlke H, Pietruszka J Sci Rep. 2016 Jan 19;6:17908. doi: 10.1038/srep17908. PMID:26783049<ref>PMID:26783049</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 5c6m" style="background-color:#fffaf0;"></div> | |||
[[Category: | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Deoxyribose-phosphate aldolase]] | |||
[[Category: Bramski, J]] | [[Category: Bramski, J]] | ||
[[Category: | [[Category: Dick, M]] | ||
[[Category: Pietruszka, J]] | [[Category: Pietruszka, J]] | ||
[[Category: | [[Category: Weiergraeber, O H]] | ||
[[Category: Dera]] | |||
[[Category: Lyase]] | |||
[[Category: Psychrophilic]] | |||
[[Category: Tim barrel]] | |||
