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Functional Amyloids Are the Rule Rather Than the Exception in Cellular Biology

Multifunctional Amyloids in the Biology of Gram-Positive Bacteria

Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”—Departamento de Microbiología, Universidad de Málaga, Bulevar Louis Pasteur, 31 (Campus Universitario de Teatinos), 29071 Malaga, Spain
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Microorganisms 2020, 8(12), 2020;
Received: 26 November 2020 / Revised: 11 December 2020 / Accepted: 14 December 2020 / Published: 17 December 2020
(This article belongs to the Special Issue Microbial Functional Amyloids)
Since they were discovered, amyloids have proven to be versatile proteins able to participate in a variety of cellular functions across all kingdoms of life. This multitask trait seems to reside in their ability to coexist as monomers, aggregates or fibrillar entities, with morphological and biochemical peculiarities. It is precisely this common molecular behaviour that allows amyloids to cross react with one another, triggering heterologous aggregation. In bacteria, many of these functional amyloids are devoted to the assembly of biofilms by organizing the matrix scaffold that keeps cells together. However, consistent with their notion of multifunctional proteins, functional amyloids participate in other biological roles within the same organisms, and emerging unprecedented functions are being discovered. In this review, we focus on functional amyloids reported in gram-positive bacteria, which are diverse in their assembly mechanisms and remarkably specific in their biological functions that they perform. Finally, we consider cross-seeding between functional amyloids as an emerging theme in interspecies interactions that contributes to the diversification of bacterial biology. View Full-Text
Keywords: functional amyloids; gram-postive bacteria; Bacillus; microbial ecology; biofilm; pathogenesis functional amyloids; gram-postive bacteria; Bacillus; microbial ecology; biofilm; pathogenesis
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MDPI and ACS Style

Álvarez-Mena, A.; Cámara-Almirón, J.; de Vicente, A.; Romero, D. Multifunctional Amyloids in the Biology of Gram-Positive Bacteria. Microorganisms 2020, 8, 2020.

AMA Style

Álvarez-Mena A, Cámara-Almirón J, de Vicente A, Romero D. Multifunctional Amyloids in the Biology of Gram-Positive Bacteria. Microorganisms. 2020; 8(12):2020.

Chicago/Turabian Style

Álvarez-Mena, Ana, Jesús Cámara-Almirón, Antonio de Vicente, and Diego Romero. 2020. "Multifunctional Amyloids in the Biology of Gram-Positive Bacteria" Microorganisms 8, no. 12: 2020.

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