2axv

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{{STRUCTURE_2axv| PDB=2axv | SCENE= }}
{{STRUCTURE_2axv| PDB=2axv | SCENE= }}
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'''Structure of PrgX Y153C mutant'''
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===Structure of PrgX Y153C mutant===
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==Overview==
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Many bacterial activities, including expression of virulence factors, horizontal genetic transfer, and production of antibiotics, are controlled by intercellular signaling using small molecules. To date, understanding of the molecular mechanisms of peptide-mediated cell-cell signaling has been limited by a dearth of published information about the molecular structures of the signaling components. Here, we present the molecular structure of PrgX, a DNA- and peptide-binding protein that regulates expression of the conjugative transfer genes of the Enterococcus faecalis plasmid pCF10 in response to an intercellular peptide pheromone signal. Comparison of the structures of PrgX and the PrgX/pheromone complex suggests that pheromone binding destabilizes PrgX tetramers, opening a 70-bp pCF10 DNA loop required for conjugation repression.
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{{ABSTRACT_PUBMED_16339309}}
==About this Structure==
==About this Structure==
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[[Category: Pheromone]]
[[Category: Pheromone]]
[[Category: Repressor]]
[[Category: Repressor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 22:36:26 2008''

Revision as of 19:36, 27 July 2008

Template:STRUCTURE 2axv

Structure of PrgX Y153C mutant

Template:ABSTRACT PUBMED 16339309

About this Structure

2AXV is a Single protein structure of sequence from Enterococcus faecalis. Full crystallographic information is available from OCA.

Reference

Structure of peptide sex pheromone receptor PrgX and PrgX/pheromone complexes and regulation of conjugation in Enterococcus faecalis., Shi K, Brown CK, Gu ZY, Kozlowicz BK, Dunny GM, Ohlendorf DH, Earhart CA, Proc Natl Acad Sci U S A. 2005 Dec 20;102(51):18596-601. Epub 2005 Dec 8. PMID:16339309

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