7DEK

Pseudomonas aeruginosa FK506-binding protein PaFkbA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.249 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural characterization of PaFkbA: A periplasmic chaperone from Pseudomonas aeruginosa .

Huang, Q.Yang, J.Li, C.Song, Y.Zhu, Y.Zhao, N.Mou, X.Tang, X.Luo, G.Tong, A.Sun, B.Tang, H.Li, H.Bai, L.Bao, R.

(2021) Comput Struct Biotechnol J 19: 2460-2467

  • DOI: https://doi.org/10.1016/j.csbj.2021.04.045
  • Primary Citation of Related Structures:  
    7DEK

  • PubMed Abstract: 

    Bacterial Mip-like FK506-binding proteins (FKBPs) mostly exhibit peptidyl-prolyl-cis/ trans -isomerase (PPIase) and chaperone activities. These activities are associated with various intracellular functions with diverse molecular mechanisms. Herein, we report the PA3262 gene-encoded crystal structure of the Pseudomonas aeruginosa PAO1's Mip-like protein PaFkbA. Biochemical characterization of PaFkbA demonstrated PaFkbA's chaperone activity for periplasmic protein MucD, a negative regulator of alginate biosynthesis. Furthermore, structural analysis of PaFkbA was used to describe the key features of PaFkbA chaperone activity. The outcomes of this analysis showed that the hinge region in the connecting helix of PaFbkA leads to the crucial conformational state transition for PaFkbA activity. Besides, the N-terminal domains participated in dimerization, and revealed its potential connection with FKBP domain and substrate binding. Mutagenesis and chaperone activity assay supported the theory that inter-domain motions are essential for PaFkbA function. These results provide biochemical and structural insights into the mechanism for FKBP's chaperone activity and establish a plausible correlation between PaFkbA and P. aeruginosa MucD.


  • Organizational Affiliation

    Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomeraseA,
B [auth G],
C [auth F],
D
208Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: PA3262
EC: 5.2.1.8
UniProt
Find proteins for Q9HYX8 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HYX8 
Go to UniProtKB:  Q9HYX8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HYX8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.249 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.073α = 90
b = 94.223β = 90
c = 117.437γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-08
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Refinement description