http://www.cnr.it/ontology/cnr/individuo/prodotto/ID194703

Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves (Articolo in rivista)

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Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves (Articolo in rivista) (literal)

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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) (2013)
Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves
in Molecular biotechnology; Humana Press Inc., Totowa (Stati Uniti d'America); Springer, Berlin Heidelberg (Germania)
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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) (literal)

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1) Department of Biochemical Sciences, University of Florence, Morgagni 50, 50134 Florence, Italy 2) Department of Plant Production, Plant Pathology Section, Milan State University, Via Celoria 2, 20133 Milan, Italy 3) Department of Agricultural Biotechnologies, University of Florence, Via della Lastruccia 10, 50019 Sesto Fiorentino, Italy 4) Complex Systems Institute (ISC), National Research Council, Via Madonna del piano 10, 50019 Sesto Fiorentino, Florence, Italy 5) Institute of Biophysics (IBF), National Research Council, Via De Marini, 6, 16149 Genoa, Italy 6) Department of Crop Biology, Genetics Section, University of Pisa, Via Matteotti 1/B, 56124 Pisa, Italy (literal)

Titolo

Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves (literal)

Abstract

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. (literal)

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