4COU

Crystal Structure of Epithelial Adhesin 6 A domain (Epa6A) from Candida glabrata in complex with Lactose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 

wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Structural Hotspots Determine Functional Diversity of the Candida Glabrata Epithelial Adhesin Family

Diderrich, R.Kock, M.Maestre-Reyna, M.Rupp, S.Essen, L.-O.Moesch, H.-U.

(2015) J Biol Chem 290: 19597

  • DOI: https://doi.org/10.1074/jbc.M115.655654
  • Primary Citation of Related Structures:  
    4COU, 4COV, 4COW, 4COY, 4COZ, 4D3W

  • PubMed Abstract: 

    For host colonization, the human fungal pathogen Candida glabrata is known to utilize a large family of highly related surface-exposed cell wall proteins, the lectin-like epithelial adhesins (Epas). To reveal the structure-function relationships within the entire Epa family, we have performed a large scale functional analysis of the adhesion (A) domains of 17 Epa paralogs in combination with three-dimensional structural studies of selected members with cognate ligands. Our study shows that most EpaA domains exert lectin-like functions and together recognize a wide variety of glycans with terminal galactosides for conferring epithelial cell adhesion. We further identify several conserved and variable structural features within the diverse Epa ligand binding pockets, which affect affinity and specificity. These features rationalize why mere phylogenetic relationships within the Epa family are weak indicators for functional classification and explain how Epa-like adhesins have evolved in C. glabrata and related fungal species.


  • Organizational Affiliation

    From the Departments of Genetics and.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
EPITHELIAL ADHESIN 6267Nakaseomyces glabratus CBS 138Mutation(s): 0 
UniProt
Find proteins for Q6FX55 (Candida glabrata (strain ATCC 2001 / BCRC 20586 / JCM 3761 / NBRC 0622 / NRRL Y-65 / CBS 138))
Explore Q6FX55 
Go to UniProtKB:  Q6FX55
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6FX55
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-galactopyranose-(1-4)-beta-D-glucopyranose
B
2N/A
Glycosylation Resources
GlyTouCan:  G84224TW
GlyCosmos:  G84224TW
GlyGen:  G84224TW
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.3α = 90
b = 61.1β = 90
c = 106.3γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-18
    Type: Initial release
  • Version 1.1: 2015-07-01
    Changes: Database references
  • Version 1.2: 2015-07-08
    Changes: Database references
  • Version 1.3: 2015-08-19
    Changes: Database references
  • Version 1.4: 2019-05-08
    Changes: Data collection, Experimental preparation, Other
  • Version 1.5: 2019-05-22
    Changes: Data collection, Experimental preparation
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Other, Structure summary
  • Version 2.1: 2023-12-20
    Changes: Data collection, Database references, Refinement description, Structure summary