3ra5

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[[Image:3ra5.jpg|left|200px]]
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==Crystal structure of T. celer L30e E6A/R92A variant==
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<StructureSection load='3ra5' size='340' side='right' caption='[[3ra5]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3ra5]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermococcus_celer Thermococcus celer]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RA5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RA5 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1h7m|1h7m]], [[3ra6|3ra6]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">rpl30, rpl30e ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2264 Thermococcus celer])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ra5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ra5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ra5 RCSB], [http://www.ebi.ac.uk/pdbsum/3ra5 PDBsum]</span></td></tr>
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<table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Most thermophilic proteins tend to have more salt bridges, and achieve higher thermostability by up-shifting and broadening their protein stability curves. While the stabilizing effect of salt-bridge has been extensively studied, experimental data on how salt-bridge influences protein stability curves are scarce. Here, we used double mutant cycles to determine the temperature-dependency of the pair-wise interaction energy and the contribution of salt-bridges to DeltaC(p) in a thermophilic ribosomal protein L30e. Our results showed that the pair-wise interaction energies for the salt-bridges E6/R92 and E62/K46 were stabilizing and insensitive to temperature changes from 298 to 348 K. On the other hand, the pair-wise interaction energies between the control long-range ion-pair of E90/R92 were negligible. The DeltaC(p) of all single and double mutants were determined by Gibbs-Helmholtz and Kirchhoff analyses. We showed that the two stabilizing salt-bridges contributed to a reduction of DeltaC(p) by 0.8-1.0 kJ mol(1) K(1). Taken together, our results suggest that the extra salt-bridges found in thermophilic proteins enhance the thermostability of proteins by reducing DeltaC(p), leading to the up-shifting and broadening of the protein stability curves.
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Stabilizing salt-bridge enhances protein thermostability by reducing the heat capacity change of unfolding.,Chan CH, Yu TH, Wong KB PLoS One. 2011;6(6):e21624. Epub 2011 Jun 24. PMID:21720566<ref>PMID:21720566</ref>
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The line below this paragraph, containing "STRUCTURE_3ra5", creates the "Structure Box" on the page.
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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or leave the SCENE parameter empty for the default display.
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{{STRUCTURE_3ra5| PDB=3ra5 | SCENE= }}
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===Crystal structure of T. celer L30e E6A/R92A variant===
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
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<references/>
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The line below this paragraph, {{ABSTRACT_PUBMED_21720566}}, adds the Publication Abstract to the page
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__TOC__
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(as it appears on PubMed at http://www.pubmed.gov), where 21720566 is the PubMed ID number.
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</StructureSection>
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{{ABSTRACT_PUBMED_21720566}}
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==About this Structure==
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[[3ra5]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermococcus_celer Thermococcus celer]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RA5 OCA].
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==Reference==
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<ref group="xtra">PMID:021720566</ref><references group="xtra"/>
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[[Category: Thermococcus celer]]
[[Category: Thermococcus celer]]
[[Category: Chan, C H.]]
[[Category: Chan, C H.]]

Revision as of 04:49, 5 June 2014

Crystal structure of T. celer L30e E6A/R92A variant

3ra5, resolution 1.80Å

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