6K1T

The structure of Francisella virulence factor BioJ


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.208 

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Literature

Molecular Basis of BioJ, a Unique Gatekeeper in Bacterial Biotin Synthesis.

Wei, W.Guan, H.Zhu, T.Zhang, S.Fan, C.Ouyang, S.Feng, Y.

(2019) iScience 19: 796-808

  • DOI: 10.1016/j.isci.2019.08.028
  • Primary Citation of Related Structures:  
    6K1T

  • PubMed Abstract: 
  • Biotin is an indispensable cofactor in the three domains of life. The unusual virulence factor BioJ of Francisella catalyzes the formation of pimeloyl-ACP, an intermediate in biotin synthesis. Here, we report the 1.58 Å crystal structure of BioJ, the enzymatic activity of which is determined with the in vitro reconstituted reaction and biotin bioassay in vivo ...

    Biotin is an indispensable cofactor in the three domains of life. The unusual virulence factor BioJ of Francisella catalyzes the formation of pimeloyl-ACP, an intermediate in biotin synthesis. Here, we report the 1.58 Å crystal structure of BioJ, the enzymatic activity of which is determined with the in vitro reconstituted reaction and biotin bioassay in vivo. Unlike the paradigm BioH, BioJ displays an atypical α/β-hydrolase fold. A structurally conserved catalytic triad (S151, D248, and H278) of BioJ is functionally defined. A proposed model for BioJ catalysis involves two basic residues-rich cavities, of which cavity-1, rather than cavity-2, binds to the ACP moiety of its physiological substrate, pimeloyl-ACP methyl ester. In summary, this finding provides molecular insights into the BioJ gatekeeper of biotin synthesis.


    Organizational Affiliation

    Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; College of Animal Science, Zhejiang University, Hangzhou 310058, China. Electronic address: fengyj@zju.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Alpha/beta hydrolase fold family proteinA306Francisella philomiragia subsp. philomiragia ATCC 25015Mutation(s): 0 
Gene Names: BZ13_192
UniProt
Find proteins for C6YW90 (Francisella philomiragia subsp. philomiragia ATCC 25015)
Explore C6YW90 
Go to UniProtKB:  C6YW90
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC6YW90
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.58 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.208 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.943α = 90
b = 67.313β = 112.55
c = 55.571γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
AutoPROCdata collection
AutoPROCdata scaling
PHENIXphasing
Cootmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-15
    Type: Initial release