6IKI

Crystal structure of YfiB(W55L)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


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Literature

Structural analysis of activating mutants of YfiB from Pseudomonas aeruginosa PAO1.

Li, S., Li, T., Teng, X., Lou, X., Xu, Y., Zhang, Q., Bartlam, M.

(2018) Biochem Biophys Res Commun 506: 997-1003

  • DOI: 10.1016/j.bbrc.2018.10.190
  • Primary Citation of Related Structures:  
    6IKI, 6IKJ, 6IKK

  • PubMed Abstract: 

    • Bacterial cyclic-di-GMP (c-di-GMP) is an important messenger molecule that influences diverse cellular processes including motility, virulence and cytotoxicity systems, polysaccharide synthesis and biofilm formation. The YfiBNR tripartite signalling system in P ...

    Bacterial cyclic-di-GMP (c-di-GMP) is an important messenger molecule that influences diverse cellular processes including motility, virulence and cytotoxicity systems, polysaccharide synthesis and biofilm formation. The YfiBNR tripartite signalling system in P. aeruginosa modulates the cellular c-di-GMP levels in response to signals received from the periplasm. In this study, we analyse the structures of activating mutants of the outer membrane protein YfiB that give rise to increased surface attachment and biofilm formation. The F48S and W55L mutants of YfiB(27-168) crystallize in the same dimeric arrangement as our previously reported YfiB structures that preclude complex formation with YfiR. The L43P mutant of YfiB(27-168) is monomeric and forms a stable complex with YfiR. The YfiB(L43P)-YfiR crystal structure reveals a dramatic rearrangement of the N-terminal fragment, which is implicated in increased YfiB activation and membrane attachment, upon YfiR binding. Comparison with our previous complex structure between YfiB(59-168) and YfiR reveals extensive interactions between the N-terminal fragment of YfiB (residues 35-55) and YfiR.

    Organizational Affiliation: 

    State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, People's Republic of China; College of Life Sciences, Nankai University, Tianjin, 300071, People's Republic of China. Electronic address: bartlam@nankai.edu.cn.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
YfiBA, B168Pseudomonas aeruginosa PAO1Mutation(s): 1 
Gene Names: yfiB, PA1119
UniProt
Find proteins for Q9I4L6 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I4L6 
Go to UniProtKB:  Q9I4L6
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
D [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
C [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.207 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.563α = 90
b = 44.563β = 90
c = 154.934γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31570128

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-13
    Type: Initial release