The bubble protein from Penicillium brevicompactum Dierckx exudate.

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.164 

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This is version 1.4 of the entry. See complete history


Solving the Structure of the Bubble Protein Using the Anomalous Sulfur Signal from Single-Crystal in-House Cu Kalpha Diffraction Data Only

Olsen, J.G.Flensburg, C.Olsen, O.Bricogne, G.Henriksen, A.

(2004) Acta Crystallogr D Biol Crystallogr 60: 250

  • DOI: https://doi.org/10.1107/S0907444903025927
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A small cysteine-rich protein, the function of which remains elusive, was discovered in the exudate of a Penicillium species. Crystal diffraction experiments conducted using in-house Cu Kalpha radiation and an R-AXIS IV++ imaging-plate detector yielded high-quality data to 1.4 A, with a distinguishable anomalous signal from sulfur (DeltaF/F = 0.031). This was used to phase the data and solve the structure using a single data set; the 64-residue amino-acid sequence was unambiguously determined from the electron density. It revealed a globular all-beta protein with a hitherto unknown fold, having a surface electrostatic charge distribution that is similar to that of another small secreted fungal protein, the Williopsis mrakii killer toxin. Aligning the charge distribution superimposed the potential recognition sites of the two proteins, suggesting a similar negatively charged target.

  • Organizational Affiliation

    Carlsberg Laboratory, Department of Chemistry, Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BUBBLE PROTEIN64Penicillium brevicompactumMutation(s): 0 
Find proteins for P83799 (Penicillium brevicompactum)
Explore P83799 
Go to UniProtKB:  P83799
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP83799
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.164 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.615α = 90
b = 58.436β = 90
c = 53.415γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-07-12
    Changes: Data collection
  • Version 1.4: 2019-04-03
    Changes: Data collection, Experimental preparation