6PWJ

Vibrio cholerae LapD S helix-GGDEF-EAL (apo)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Conserved Regulatory Circuit Controls Large Adhesins in Vibrio cholerae.

Kitts, G.Giglio, K.M.Zamorano-Sanchez, D.Park, J.H.Townsley, L.Cooley, R.B.Wucher, B.R.Klose, K.E.Nadell, C.D.Yildiz, F.H.Sondermann, H.

(2019) mBio 10

  • DOI: 10.1128/mBio.02822-19
  • Primary Citation of Related Structures:  
    6PWJ, 6PWK

  • PubMed Abstract: 
  • The dinucleotide second messenger c-di-GMP has emerged as a central regulator of reversible cell attachment during bacterial biofilm formation. A prominent cell adhesion mechanism first identified in pseudomonads combines two c-di-GMP-mediated proces ...

    The dinucleotide second messenger c-di-GMP has emerged as a central regulator of reversible cell attachment during bacterial biofilm formation. A prominent cell adhesion mechanism first identified in pseudomonads combines two c-di-GMP-mediated processes: transcription of a large adhesin and its cell surface display via posttranslational proteolytic control. Here, we characterize an orthologous c-di-GMP effector system and show that it is operational in Vibrio cholerae , where it regulates two distinct classes of adhesins. Through structural analyses, we reveal a conserved autoinhibition mechanism of the c-di-GMP receptor that controls adhesin proteolysis and present a structure of a c-di-GMP-bound receptor module. We further establish functionality of the periplasmic protease controlled by the receptor against the two adhesins. Finally, transcription and functional assays identify physiological roles of both c-di-GMP-regulated adhesins in surface attachment and biofilm formation. Together, our studies highlight the conservation of a highly efficient signaling effector circuit for the control of cell surface adhesin expression and its versatility by revealing strain-specific variations. IMPORTANCE Vibrio cholerae , the causative agent of the diarrheal disease cholera, benefits from a sessile biofilm lifestyle that enhances survival outside the host but also contributes to host colonization and infectivity. The bacterial second messenger c-di-GMP has been identified as a central regulator of biofilm formation, including in V. cholerae ; however, our understanding of the pathways that contribute to this process is incomplete. Here, we define a conserved signaling system that controls the stability of large adhesion proteins at the cell surface of V. cholerae , which are important for cell attachment and biofilm formation. Insight into the regulatory circuit underlying biofilm formation may inform targeted strategies to interfere with a process that renders this bacterium remarkably adaptable to changing environments.


    Organizational Affiliation

    Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA fyildiz@ucsc.edu hs293@cornell.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GGDEF and EAL domain-containing proteinAB418Vibrio cholerae O1 str. 2010EL-1786Mutation(s): 0 
Find proteins for A0A0H3AFX3 (Vibrio cholerae serotype O1 (strain ATCC 39541 / Classical Ogawa 395 / O395))
Explore A0A0H3AFX3 
Go to UniProtKB:  A0A0H3AFX3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PGE
Query on PGE

Download CCD File 
B
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.83α = 90
b = 129.83β = 90
c = 114.441γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
MOSFLMdata reduction
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM123609
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM103485
National Science Foundation (NSF, United States)United StatesDMR-1332208

Revision History 

  • Version 1.0: 2019-10-09
    Type: Initial release
  • Version 1.1: 2019-11-27
    Changes: Author supporting evidence
  • Version 1.2: 2020-04-22
    Changes: Database references