Download MendeleyCharacterization of a Basidiomycota hydrophobin reveals the structural basis for a high-similarity Class I subdivision.
Gandier, J.A., Langelaan, D.N., Won, A., O'Donnell, K., Grondin, J.L., Spencer, H.L., Wong, P., Tillier, E., Yip, C., Smith, S.P., Master, E.R.(2017) Sci Rep 7: 45863-45863
- PubMed: 28393921
- DOI: https://doi.org/10.1038/srep45863
- Primary Citation of Related Structures:
2NBH - PubMed Abstract:
Class I hydrophobins are functional amyloids secreted by fungi. They self-assemble into organized films at interfaces producing structures that include cellular adhesion points and hydrophobic coatings. Here, we present the first structure and solution properties of a unique Class I protein sequence of Basidiomycota origin: the Schizophyllum commune hydrophobin SC16 (hyd1). While the core β-barrel structure and disulphide bridging characteristic of the hydrophobin family are conserved, its surface properties and secondary structure elements are reminiscent of both Class I and II hydrophobins. Sequence analyses of hydrophobins from 215 fungal species suggest this structure is largely applicable to a high-identity Basidiomycota Class I subdivision (IB). To validate this prediction, structural analysis of a comparatively distinct Class IB sequence from a different fungal order, namely the Phanerochaete carnosa PcaHyd1, indicates secondary structure properties similar to that of SC16. Together, these results form an experimental basis for a high-identity Class I subdivision and contribute to our understanding of functional amyloid formation.
Organizational Affiliation:
Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada.
