Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves
| Autor: | Cecilia Comparini, Gianni Cappugi, Federica Martellini, Rodolfo Bernardi, Bruno Tiribilli, Franco Faoro, Barbara Pantera, Simone Luti, Ivan Baccelli, Luigia Pazzagli, L. Carresi, Francesca Sbrana, Aniello Scala, D. Maffi |
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| Rok vydání: | 2012 |
| Předmět: |
Cuticle
Molecular Sequence Data Expression Bioengineering PAMP Protein characterization Biology Protein aggregation Applied Microbiology and Biotechnology Biochemistry Pichia Protein Structure Secondary Fungal Proteins Hydrophobic surfaces Protein structure Ascomycota Amino Acid Sequence Cloning Molecular Defense responses Polytetrafluoroethylene Molecular Biology Peptide sequence Protein Unfolding Cerato-platanin Flocculation Recombinant Proteins Plant Leaves Populus Secretory protein Plant cuticle Waxes Unfolded protein response Aluminum Silicates Hydrophobic and Hydrophilic Interactions Biotechnology |
| Zdroj: | Molecular biotechnology 55 (2013): 27–42. doi:10.1007/s12033-012-9618-4 info:cnr-pdr/source/autori:Federica Martellini (1); Franco Faoro (2); Lara Carresi (3); Barbara Pantera (1); Ivan Baccelli (3); Dario Maffi (2); Bruno Tiribilli (4); Francesca Sbrana (5); Simone Luti (1); Cecilia Comparini (3); Rodolfo Bernardi (6); Gianni Cappugi (1); Aniello Scala (3); Luigia Pazzagli (1)/titolo:Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves/doi:10.1007%2Fs12033-012-9618-4/rivista:Molecular biotechnology/anno:2013/pagina_da:27/pagina_a:42/intervallo_pagine:27–42/volume:55 |
| ISSN: | 1559-0305 1073-6085 |
| Popis: | Based on sequence homology, several fungal Cys-rich secreted proteins have been grouped in the cerato-platanin (CP) family, which comprises at least 40 proteins involved mainly in eliciting defense-related responses. The core member of this family is cerato-platanin, a moderately hydrophobic protein with a double ?-? barrel fold. CP and the recently identified orthologous cerato-populin (Pop1) are involved in host-fungus interaction, and can be considered non-catalytic fungal PAMPs. CP is more active in inducing defense when in an aggregated conformation than in its native form, but little is known about other CP-orthologous proteins. Here, we cloned, expressed, and purified recombinant Pop1, which was used to characterize the protein aggregates. Our results suggest that the unfolded, self-assembled Pop1 is more active in inducing defense, and that the unfolding process can be induced by interaction with hydrophobic inanimate surfaces such as Teflon, treated mica, and gold sheets. In vivo, we found that both CP and Pop1 interact with the hydrophobic cuticle of leaves. Therefore, we propose that the interaction of these proteins with host cuticle waxes could induce unfolding and consequently trigger their PAMP-like activity. |
| Databáze: | OpenAIRE |
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