What We Do Not Know about Fungal Cell Adhesion Molecules

Area of Science:

• Mycology
• Molecular Biology
• Biochemistry

Background:

• Extensive research exists on fungal cell adhesion molecules (adhesins), primarily in *Candida albicans* and *Saccharomyces cerevisiae*.
• Adhesins from other fungal phyla are sparsely described, with research often at the cellular rather than molecular level.
• Known adhesins share some features like high Ser/Thr content, repeats, glycosylations, and GPI anchors, but these are not universal.

Purpose of the Study:

• To highlight the limited knowledge of fungal adhesins outside of specific yeasts.
• To review common and variable features of known fungal adhesins.
• To propose methods for identifying and characterizing novel fungal adhesins.

Main Methods:

• Bioinformatics tools for analyzing genome sequences.
• Yeast surface display models.
• Adhesion substrate arrays.

Main Results:

• A catalog of known adhesins reveals common structural and functional motifs.
• Ligands for fungal adhesins include host and homologous cell proteins and glycans.
• Genome sequences provide a resource for discovering new adhesins.

Conclusions:

• New tools and genome data can accelerate the identification and characterization of fungal adhesins across diverse phyla.
• Understanding fungal adhesins is critical for addressing fungal ecology, pathogenesis, and biofilm formation.
• Further research on fungal adhesins will provide insights into infection and biomass turnover.