View source for 3otp


==Crystal structure of the DegP dodecamer with a model substrate==
<StructureSection load='3otp' size='340' side='right'caption='[[3otp]], [[Resolution|resolution]] 3.76&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3otp]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OTP 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]] 3.76&#8491;</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=3otp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3otp OCA], [https://pdbe.org/3otp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3otp RCSB], [https://www.ebi.ac.uk/pdbsum/3otp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3otp ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DEGP_ECOLI DEGP_ECOLI] DegP acts as a chaperone at low temperatures but switches to a peptidase (heat shock protein) at higher temperatures. It degrades transiently denatured and unfolded proteins which accumulate in the periplasm following heat shock or other stress conditions. DegP is efficient with Val-Xaa and Ile-Xaa peptide bonds, suggesting a preference for beta-branched side chain amino acids. Only unfolded proteins devoid of disulfide bonds appear capable of being cleaved, thereby preventing non-specific proteolysis of folded proteins. Its proteolytic activity is essential for the survival of cells at elevated temperatures. It can degrade IciA, ada, casein, globin and PapA. DegP shares specificity with DegQ. DegP is also involved in the biogenesis of partially folded outer-membrane proteins (OMP).<ref>PMID:2180903</ref> <ref>PMID:8830688</ref> <ref>PMID:10319814</ref> <ref>PMID:18505836</ref> <ref>PMID:12730160</ref> <ref>PMID:18496527</ref> 

==See Also==
*[[Heat Shock Protein structures|Heat Shock Protein structures]]
*[[Lysozyme 3D structures|Lysozyme 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Gallus gallus]]
[[Category: Large Structures]]
[[Category: Grant RA]]
[[Category: Kim S]]
[[Category: Sauer RT]]