2zl0

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{{STRUCTURE_2zl0| PDB=2zl0 | SCENE= }}
{{STRUCTURE_2zl0| PDB=2zl0 | SCENE= }}
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'''Crystal structure of H.pylori ClpP'''
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===Crystal structure of H.pylori ClpP===
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==Overview==
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ClpP and its ATPase compartment, ClpX or ClpA, remove misfolded proteins in cells and are of utmost importance in protein quality control. The ring hexamers of ClpA or ClpX recognize, unfold, and translocate target substrates into the degradation chamber of the double-ring tetradecamer of ClpP. The overall reaction scheme catalyzed by ClpXP or ClpAP has been proposed; however, the molecular mechanisms associated with substrate recognition and degradation have not yet been clarified in detail. To investigate these mechanisms, we determined the crystal structures of ClpP from Helicobacter pylori in complex with product peptides bound to the active site as well as in the apo state. In the complex structure, the peptides are zipped with two antiparallel strands of ClpP and point to the adjacent active site, thus providing structural explanations for the broad substrate specificity, the product inhibition and the processive degradation of substrates in the chamber. The structures also suggest that substrate binding causes local conformational changes around the active site that ultimately induce the active conformation of ClpP.
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(as it appears on PubMed at http://www.pubmed.gov), where 18468623 is the PubMed ID number.
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{{ABSTRACT_PUBMED_18468623}}
==About this Structure==
==About this Structure==
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[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Serine protease]]
[[Category: Serine protease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jun 18 12:19:40 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:23:04 2008''

Revision as of 14:23, 28 July 2008

Image:2zl0.png

Template:STRUCTURE 2zl0

Crystal structure of H.pylori ClpP

Template:ABSTRACT PUBMED 18468623

About this Structure

2ZL0 is a Single protein structure of sequence from Helicobacter pylori. Full crystallographic information is available from OCA.

Reference

The structural basis for the activation and peptide recognition of bacterial ClpP., Kim DY, Kim KK, J Mol Biol. 2008 Jun 13;379(4):760-71. Epub 2008 Apr 20. PMID:18468623

Page seeded by OCA on Mon Jul 28 17:23:04 2008

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