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[[Image:3pr9.png|left|200px]]
==Structural analysis of protein folding by the Methanococcus jannaschii chaperone FKBP26==
<StructureSection load='3pr9' size='340' side='right' caption='[[3pr9]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3pr9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PR9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PR9 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3pra|3pra]], [[3prb|3prb]], [[3prd|3prd]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MJ0825 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 Methanocaldococcus jannaschii])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] </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=3pr9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pr9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3pr9 RCSB], [http://www.ebi.ac.uk/pdbsum/3pr9 PDBsum]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
In the cell, protein folding is mediated by folding catalysts and chaperones. The two functions are often linked, especially when the catalytic module forms part of a multidomain protein, as in Methanococcus jannaschii peptidyl-prolyl cis/trans isomerase FKBP26. Here, we show that FKBP26 chaperone activity requires both a 50-residue insertion in the catalytic FKBP domain, also called 'Insert-in-Flap' or IF domain, and an 80-residue C-terminal domain. We determined FKBP26 structures from four crystal forms and analyzed chaperone domains in light of their ability to mediate protein-protein interactions. FKBP26 is a crescent-shaped homodimer. We reason that folding proteins are bound inside the large crescent cleft, thus enabling their access to inward-facing peptidyl-prolyl cis/trans isomerase catalytic sites and ipsilateral chaperone domain surfaces. As these chaperone surfaces participate extensively in crystal lattice contacts, we speculate that the observed lattice contacts reflect a proclivity for protein associations and represent substrate interactions by FKBP26 chaperone domains. Finally, we find that FKBP26 is an exceptionally flexible molecule, suggesting a mechanism for nonspecific substrate recognition.


{{STRUCTURE_3pr9|  PDB=3pr9  |  SCENE=  }}
Structural Analysis of Protein Folding by the Long-Chain Archaeal Chaperone FKBP26.,Martinez-Hackert E, Hendrickson WA J Mol Biol. 2011 Apr 1;407(3):450-64. Epub 2011 Jan 22. PMID:21262232<ref>PMID:21262232</ref>


===Structural analysis of protein folding by the Methanococcus jannaschii chaperone FKBP26===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_21262232}}
 
==About this Structure==
[[3pr9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PR9 OCA].


==See Also==
==See Also==
*[[FK506 binding protein|FK506 binding protein]]
*[[FK506 binding protein|FK506 binding protein]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:021262232</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Methanocaldococcus jannaschii]]
[[Category: Methanocaldococcus jannaschii]]
[[Category: Peptidylprolyl isomerase]]
[[Category: Peptidylprolyl isomerase]]
[[Category: Hendrickson, W A.]]
[[Category: Hendrickson, W A]]
[[Category: Martinez-Hackert, E.]]
[[Category: Martinez-Hackert, E]]
[[Category: Chaperone]]
[[Category: Chaperone]]
[[Category: Fkbp protein]]
[[Category: Fkbp protein]]
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