Alpha-expansins: more than three decades of wall creep and loosening in fruits
Autor
Méndez-Yáñez, Angela
Carrasco-Orellana, Cristian
Ramos, Patricio
Morales-Quintana, Luis
Resumen
Expansins are proteins without catalytic activity, but able to break hydrogen bonds between cell wall polysaccharides hemicellulose and cellulose. This proteins were reported for the first time in 1992, describing cell wall extension in cucumber hypocotyls caused particularly by alpha-expansins. Although these proteins have GH45 and CBM63 domains, characteristic of enzymes related with the cleavage of cell wall polysaccharides, demonstrating in vitro that they extend plant cell wall. Its participation has been associated to molecular processes such as development and growing, fruit ripening and softening, tolerance and resistance to biotic and abiotic stress and seed germination. Structural insights, facilitated by bioinformatics approaches, are highlighted, shedding light on the intricate interactions between alpha-expansins and cell wall polysaccharides. After more than thirty years of its discovery, we want to celebrate the knowledge of alpha-expansins and emphasize their importance to understand the phenomena of disassembly and loosening of the cell wall, specifically in the fruit ripening phenomena, with this state-of-the-art dedicated to them. © The Author(s), under exclusive licence to Springer Nature B.V. 2024.
Colecciones
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Article
Role of Glycoproteins during Fruit Ripening and Seed Development (2021)
Méndez-Yañez, Ángela; Ramos, Patricio; Morales-Quintana, Luis (NLM (Medline), 2021-08-15)Approximately thirty percent of the proteins synthesized in animal or plant cells travel through the secretory pathway. Seventy to eighty percent of those proteins are glycosylated. Thus, glycosylation is an important ... -
Article
Rhamnogalacturonan Endolyase Family 4 Enzymes: An Update on Their Importance in the Fruit Ripening Process (2024)
Morales-Quintana, Luis; Ramos, Patricio; Méndez-Yáñez, Angela (MDPI, 2022)Fruit ripening is a process that produces fruit with top sensory qualities that are ideal for consumption. For the plant, the final objective is seed dispersal. One of the fruit characteristics observed by consumers is ... -
Article
Involvement of the GH38 Family Exoglycosidase α-Mannosidase in Strawberry Fruit Ripening (2024)
Méndez-Yáñez, Angela; Sáez, Darwin; Rodríguez-Arriaza, Francisca; Letelier-Naritelli, Claudio; Valenzuela-Riffo, Felipe; Morales-Quintana, Luis (Multidisciplinary Digital Publishing Institute (MDPI), 2024)Exoglycosidase enzymes hydrolyze the N-glycosylations of cell wall enzymes, releasing N-glycans that act as signal molecules and promote fruit ripening. Vesicular exoglycosidase α-mannosidase enzymes of the GH38 family (EC ...