4KKR

Crystal structure of Vibrio cholerae RbmA (crystal form 3)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for Biofilm Formation via the Vibrio cholerae Matrix Protein RbmA.

Giglio, K.M.Fong, J.C.Yildiz, F.H.Sondermann, H.

(2013) J.Bacteriol. 195: 3277-3286

  • DOI: 10.1128/JB.00374-13
  • Primary Citation of Related Structures:  4KKP, 4KKQ

  • PubMed Abstract: 
  • During the transition from a free-swimming, single-cell lifestyle to a sessile, multicellular state called a biofilm, bacteria produce and secrete an extracellular matrix comprised of nucleic acids, exopolysaccharides, and adhesion proteins. The Vibr ...

    During the transition from a free-swimming, single-cell lifestyle to a sessile, multicellular state called a biofilm, bacteria produce and secrete an extracellular matrix comprised of nucleic acids, exopolysaccharides, and adhesion proteins. The Vibrio cholerae biofilm matrix contains three major protein components, RbmA, Bap1, and RbmC, which are unique to Vibrio cholerae and appear to support biofilm formation at particular steps in the process. Here, we focus on RbmA, a structural protein with an unknown fold. RbmA participates in the early cell-cell adhesion events and is found throughout the biofilm where it localizes to cell-cell contact sites. We determined crystal structures of RbmA and revealed that the protein folds into tandem fibronectin type III (FnIII) folds. The protein is dimeric in solution and in crystals, with the dimer interface displaying a surface groove that is lined with several positively charged residues. Structure-guided mutagenesis studies establish a crucial role for this surface patch for RbmA function. On the basis of the structure, we hypothesize that RbmA serves as a tether by maintaining flexible linkages between cells and the extracellular matrix.


    Organizational Affiliation

    Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RbmA protein
A, B
241N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.161 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 119.404α = 90.00
b = 119.404β = 90.00
c = 104.025γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
ADSCdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-22
    Type: Initial release
  • Version 1.1: 2013-06-05
    Type: Database references
  • Version 1.2: 2013-07-10
    Type: Database references