2zle

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{{STRUCTURE_2zle| PDB=2zle | SCENE= }}
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'''Cryo-EM structure of DegP12/OMP'''
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===Cryo-EM structure of DegP12/OMP===
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==Overview==
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All organisms have to monitor the folding state of cellular proteins precisely. The heat-shock protein DegP is a protein quality control factor in the bacterial envelope that is involved in eliminating misfolded proteins and in the biogenesis of outer-membrane proteins. Here we describe the molecular mechanisms underlying the regulated protease and chaperone function of DegP from Escherichia coli. We show that binding of misfolded proteins transforms hexameric DegP into large, catalytically active 12-meric and 24-meric multimers. A structural analysis of these particles revealed that DegP represents a protein packaging device whose central compartment is adaptable to the size and concentration of substrate. Moreover, the inner cavity serves antagonistic functions. Whereas the encapsulation of folded protomers of outer-membrane proteins is protective and might allow safe transit through the periplasm, misfolded proteins are eliminated in the molecular reaction chamber. Oligomer reassembly and concomitant activation on substrate binding may also be critical in regulating other HtrA proteases implicated in protein-folding diseases.
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(as it appears on PubMed at http://www.pubmed.gov), where 18496527 is the PubMed ID number.
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{{ABSTRACT_PUBMED_18496527}}
==About this Structure==
==About this Structure==
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[[Category: Transmembrane]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 15:17:06 2008''

Revision as of 12:17, 28 July 2008

Image:2zle.png

Template:STRUCTURE 2zle

Cryo-EM structure of DegP12/OMP

Template:ABSTRACT PUBMED 18496527

About this Structure

2ZLE is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structural basis for the regulated protease and chaperone function of DegP., Krojer T, Sawa J, Schafer E, Saibil HR, Ehrmann M, Clausen T, Nature. 2008 May 21;. PMID:18496527

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