4xcd: Difference between revisions
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==Crystal structure of an octadecameric TF55 complex from S. solfataricus== | ==Crystal structure of an octadecameric TF55 complex from S. solfataricus== | ||
<StructureSection load='4xcd' size='340' side='right' caption='[[4xcd]], [[Resolution|resolution]] 3.79Å' scene=''> | <StructureSection load='4xcd' size='340' side='right'caption='[[4xcd]], [[Resolution|resolution]] 3.79Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4xcd]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XCD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4XCD FirstGlance]. <br> | <table><tr><td colspan='2'>[[4xcd]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Sacs2 Sacs2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XCD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4XCD FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></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=4xcd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xcd OCA], [http://pdbe.org/4xcd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4xcd RCSB], [http://www.ebi.ac.uk/pdbsum/4xcd PDBsum]</span></td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">thsB, SSO0282 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=273057 SACS2])</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=4xcd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xcd OCA], [http://pdbe.org/4xcd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4xcd RCSB], [http://www.ebi.ac.uk/pdbsum/4xcd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4xcd ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 4xcd" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 4xcd" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Chaperonin 3D structures|Chaperonin 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Sacs2]] | |||
[[Category: Chaston, J J]] | [[Category: Chaston, J J]] | ||
[[Category: Smits, C]] | [[Category: Smits, C]] | ||
Revision as of 10:19, 29 May 2019
Crystal structure of an octadecameric TF55 complex from S. solfataricusCrystal structure of an octadecameric TF55 complex from S. solfataricus
Structural highlights
Function[THSB_SULSO] Molecular chaperone; binds unfolded polypeptides in vitro, and has a weak ATPase activity. Publication Abstract from PubMedChaperonins are essential biological complexes assisting protein folding in all kingdoms of life. Whereas homooligomeric bacterial GroEL binds hydrophobic substrates non-specifically, the heterooligomeric eukaryotic CCT binds specifically to distinct classes of substrates. Sulfolobales, which survive in a wide range of temperatures, have evolved three different chaperonin subunits (alpha, beta, gamma) that form three distinct complexes tailored for different substrate classes at cold, normal, and elevated temperatures. The larger octadecameric beta complexes cater for substrates under heat stress, whereas smaller hexadecameric alphabeta complexes prevail under normal conditions. The cold-shock complex contains all three subunits, consistent with greater substrate specificity. Structural analysis using crystallography and electron microscopy reveals the geometry of these complexes and shows a novel arrangement of the alpha and beta subunits in the hexadecamer enabling incorporation of the gamma subunit. Structural and Functional Insights into the Evolution and Stress Adaptation of Type II Chaperonins.,Chaston JJ, Smits C, Aragao D, Wong AS, Ahsan B, Sandin S, Molugu SK, Molugu SK, Bernal RA, Stock D, Stewart AG Structure. 2016 Jan 28. pii: S0969-2126(16)00010-1. doi:, 10.1016/j.str.2015.12.016. PMID:26853941[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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