View source for 5fpn


==Structure of heat shock-related 70kDA protein 2 with small-molecule ligand 3,5-dimethyl-1H-pyrazole-4-carboxylic acid (AT9084) in an alternate binding site.==
<StructureSection load='5fpn' size='340' side='right'caption='[[5fpn]], [[Resolution|resolution]] 1.96&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5fpn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FPN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5FPN FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.96&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=KYD:3,5-DIMETHYL-1H-PYRAZOLE-4-CARBOXYLIC+ACID'>KYD</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=5fpn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5fpn OCA], [https://pdbe.org/5fpn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5fpn RCSB], [https://www.ebi.ac.uk/pdbsum/5fpn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5fpn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HSP72_HUMAN HSP72_HUMAN] In cooperation with other chaperones, Hsp70s stabilize preexistent proteins against aggregation and mediate the folding of newly translated polypeptides in the cytosol as well as within organelles. These chaperones participate in all these processes through their ability to recognize nonnative conformations of other proteins. They bind extended peptide segments with a net hydrophobic character exposed by polypeptides during translation and membrane translocation, or following stress-induced damage.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Proteins need to be tightly regulated as they control biological processes in most normal cellular functions. The precise mechanisms of regulation are rarely completely understood but can involve binding of endogenous ligands and/or partner proteins at specific locations on a protein that can modulate function. Often, these additional secondary binding sites appear separate to the primary binding site, which, for example for an enzyme, may bind a substrate. In previous work, we have uncovered several examples in which secondary binding sites were discovered on proteins using fragment screening approaches. In each case, we were able to establish that the newly identified secondary binding site was biologically relevant as it was able to modulate function by the binding of a small molecule. In this study, we investigate how often secondary binding sites are located on proteins by analyzing 24 protein targets for which we have performed a fragment screen using X-ray crystallography. Our analysis shows that, surprisingly, the majority of proteins contain secondary binding sites based on their ability to bind fragments. Furthermore, sequence analysis of these previously unknown sites indicate high conservation, which suggests that they may have a biological function, perhaps via an allosteric mechanism. Comparing the physicochemical properties of the secondary sites with known primary ligand binding sites also shows broad similarities indicating that many of the secondary sites may be druggable in nature with small molecules that could provide new opportunities to modulate potential therapeutic targets.

Detection of secondary binding sites in proteins using fragment screening.,Ludlow RF, Verdonk ML, Saini HK, Tickle IJ, Jhoti H Proc Natl Acad Sci U S A. 2015 Dec 11. pii: 201518946. PMID:26655740<ref>PMID:26655740</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5fpn" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Jhoti H]]
[[Category: Ludlow RF]]
[[Category: Patel S]]
[[Category: Saini HK]]
[[Category: Tickle IJ]]
[[Category: Verdonk M]]