Structure of PrgX Y153C mutant

Experimental Data Snapshot

  • Resolution: 3.00 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.242 

wwPDB Validation   3D Report Full Report

This is version 1.5 of the entry. See complete history


Structure of peptide sex pheromone receptor PrgX and PrgX/pheromone complexes and regulation of conjugation in Enterococcus faecalis.

Shi, K.Brown, C.K.Gu, Z.Y.Kozlowicz, B.K.Dunny, G.M.Ohlendorf, D.H.Earhart, C.A.

(2005) Proc Natl Acad Sci U S A 102: 18596-18601

  • DOI: https://doi.org/10.1073/pnas.0506163102
  • Primary Citation of Related Structures:  
    2AW6, 2AWI, 2AXU, 2AXV, 2AXZ

  • PubMed Abstract: 

    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.

  • Organizational Affiliation

    Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
317Enterococcus faecalisMutation(s): 1 
Find proteins for Q04114 (Enterococcus faecalis)
Explore Q04114 
Go to UniProtKB:  Q04114
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04114
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.00 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.242 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.076α = 90
b = 82.076β = 90
c = 263.48γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-12-06
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.4: 2021-10-20
    Changes: Database references
  • Version 1.5: 2024-02-14
    Changes: Data collection, Refinement description