KpFlo11 presents a novel member of the Flo11 family with a unique recognition pattern for homophilic interactions

Experimental Data Snapshot

  • Resolution: 1.40 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.134 
  • R-Value Observed: 0.136 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Kin discrimination in social yeast is mediated by cell surface receptors of the Flo11 adhesin family.

Bruckner, S.Schubert, R.Kraushaar, T.Hartmann, R.Hoffmann, D.Jelli, E.Drescher, K.Muller, D.J.Oliver Essen, L.Mosch, H.U.

(2020) Elife 9

  • DOI: https://doi.org/10.7554/eLife.55587
  • Primary Citation of Related Structures:  
    5FV5, 5FV6

  • PubMed Abstract: 

    Microorganisms have evolved specific cell surface molecules that enable discrimination between cells from the same and from a different kind. Here, we investigate the role of Flo11-type cell surface adhesins from social yeasts in kin discrimination. We measure the adhesion forces mediated by Flo11A-type domains using single-cell force spectroscopy, quantify Flo11A-based cell aggregation in populations and determine the Flo11A-dependent segregation of competing yeast strains in biofilms. We find that Flo11A domains from diverse yeast species confer remarkably strong adhesion forces by establishing homotypic interactions between single cells, leading to efficient cell aggregation and biofilm formation in homogenous populations. Heterotypic interactions between Flo11A domains from different yeast species or Saccharomyces cerevisiae strains confer weak adhesive forces and lead to efficient strain segregation in heterogenous populations, indicating that in social yeasts Flo11A-mediated cell adhesion is a major mechanism for kin discrimination at species and sub-species levels. These findings, together with our structure and mutation analysis of selected Flo11A domains, provide a rationale of how cell surface receptors have evolved in microorganisms to mediate kin discrimination.

  • Organizational Affiliation

    Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Flocculation protein FLO11183Komagataella phaffii GS115Mutation(s): 0 
Gene Names: FLO11PAS_chr2-2_0482
Find proteins for C4R2D7 (Komagataella phaffii (strain GS115 / ATCC 20864))
Explore C4R2D7 
Go to UniProtKB:  C4R2D7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC4R2D7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.40 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.134 
  • R-Value Observed: 0.136 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.54α = 90
b = 58.52β = 90
c = 76.55γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-22
    Type: Initial release
  • Version 1.1: 2021-01-20
    Changes: Database references, Derived calculations, Other
  • Version 1.2: 2021-06-30
    Changes: Database references, Source and taxonomy, Structure summary