X-ray structure of the N-terminal domain of the flocculin Flo11 from Saccharomyces cerevisiae

Experimental Data Snapshot

  • Resolution: 0.89 Å
  • R-Value Free: 0.134 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 

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Interactions by the Fungal Flo11 Adhesin Depend on a Fibronectin Type III-Like Adhesin Domain Girdled by Aromatic Bands.

Kraushaar, T.Bruckner, S.Veelders, M.Rhinow, D.Schreiner, F.Birke, R.Pagenstecher, A.Mosch, H.Essen, L.

(2015) Structure 23: 1005

  • DOI: https://doi.org/10.1016/j.str.2015.03.021
  • Primary Citation of Related Structures:  
    4UYR, 4UYS, 4UYT

  • PubMed Abstract: 

    Saccharomyces cerevisiae harbors a family of GPI-anchored cell wall proteins for interaction with its environment. The flocculin Flo11, a major representative of these fungal adhesins, confers formation of different types of multicellular structures such as biofilms, flors, or filaments. To understand these environment-dependent growth phenotypes on a molecular level, we solved the crystal structure of the N-terminal Flo11A domain at 0.89-Å resolution. Besides a hydrophobic apical region, the Flo11A domain consists of a β sandwich of the fibronectin type III domain (FN3). We further show that homophilic Flo11-Flo11 interactions and heterophilic Flo11-plastic interactions solely depend on the Flo11A domain and are strongly pH dependent. These functions of Flo11A involve an apical region with its surface-exposed aromatic band, which is accompanied by acidic stretches. Together with electron microscopic reconstructions of yeast cell-cell contact sites, our data suggest that Flo11 acts as a spacer-like, pH-sensitive adhesin that resembles a membrane-tethered hydrophobin.

  • Organizational Affiliation

    Department of Neuropathology, Philipps-Universität, Baldingerstraße 1, 35043 Marburg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FLOCCULATION PROTEIN FLO11211Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: FLO11MAL5MUC1S1S2YIR019C
Find proteins for P08640 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P08640 
Go to UniProtKB:  P08640
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08640
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 0.89 Å
  • R-Value Free: 0.134 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 30.45α = 90
b = 54.83β = 90
c = 121.91γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2017-06-28
    Changes: Refinement description