2Y1B

Crystal structure of the E. coli outer membrane lipoprotein RcsF


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Outer Membrane Protein Rcsf, a New Substrate for the Periplasmic Protein- Disulfide Isomerase Dsbc.

Leverrier, P.Declercq, J.P.Denoncin, K.Vertommen, D.Hiniker, A.Cho, S.H.Collet, J.F.

(2011) J.Biol.Chem. 286: 16734

  • DOI: 10.1074/jbc.M111.224865

  • PubMed Abstract: 
  • The bacterial Rcs phosphorelay is a stress-induced defense mechanism that controls the expression of numerous genes, including those for capsular polysaccharides, motility, and virulence factors. It is a complex multicomponent system that includes th ...

    The bacterial Rcs phosphorelay is a stress-induced defense mechanism that controls the expression of numerous genes, including those for capsular polysaccharides, motility, and virulence factors. It is a complex multicomponent system that includes the histidine kinase (RcsC) and the response regulator (RcsB) and also auxiliary proteins such as RcsF. RcsF is an outer membrane lipoprotein that transmits signals from the cell surface to RcsC. The physiological signals that activate RcsF and how RcsF interacts with RcsC remain unknown. Here, we report the three-dimensional structure of RcsF. The fold of the protein is characterized by the presence of a central 4-stranded β sheet, which is conserved in several other proteins, including the copper-binding domain of the amyloid precursor protein. RcsF, which contains four conserved cysteine residues, presents two nonconsecutive disulfides between Cys(74) and Cys(118) and between Cys(109) and Cys(124), respectively. These two disulfides are not functionally equivalent; the Cys(109)-Cys(124) disulfide is particularly important for the assembly of an active RcsF. Moreover, we show that formation of the nonconsecutive disulfides of RcsF depends on the periplasmic disulfide isomerase DsbC. We trapped RcsF in a mixed disulfide complex with DsbC, and we show that deletion of dsbC prevents the activation of the Rcs phosphorelay by signals that function through RcsF. The three-dimensional structure of RcsF provides the structural basis to understand how this protein triggers the Rcs signaling cascade.


    Organizational Affiliation

    Welbio (Walloon Excellence in Life Sciences and Biotechnology), Université Catholique de Louvain, B-1200 Brussels, Belgium.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE OUTER MEMBRANE PROTEIN, SIGNAL
A
128Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rcsF
Find proteins for P69411 (Escherichia coli (strain K12))
Go to UniProtKB:  P69411
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
I3C
Query on I3C

Download SDF File 
Download CCD File 
A
5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid
5-Amino-2,4,6-triiodoisophthalic acid
C8 H4 I3 N O4
JEZJSNULLBSYHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.196 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 55.714α = 90.00
b = 55.714β = 90.00
c = 61.679γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Auto-Rickshawphasing
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-16
    Type: Initial release
  • Version 1.1: 2011-05-12
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance