Insights Into the Function of the NuA4 Complex in Plants
| Autor: | Verónica Jiménez-Suárez, Javier Barrero-Gil, Jose A. Jarillo, Laura Bouza-Morcillo, Loreto Espinosa-Cores, Ana Lázaro, Manuel Piñeiro, Raquel Piqueras |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Arabidopsis Review Plant Science lcsh:Plant culture Biology 01 natural sciences Chromatin remodeling 03 medical and health sciences Transcriptional regulation Nucleosome lcsh:SB1-1110 development 030304 developmental biology Histone Acetyltransferases 0303 health sciences histone acetylation flowering time biology.organism_classification Chromatin Cell biology Histone NuA4 Acetylation SWR1 biology.protein chromatin TIP60 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Vol 11 (2020) |
| ISSN: | 1664-462X |
| Popis: | Chromatin remodeling plays a key role in the establishment and maintenance of gene expression patterns essential for plant development and responses to environmental factors. Post-translational modification of histones, including acetylation, is one of the most relevant chromatin remodeling mechanisms that operate in eukaryotic cells. Histone acetylation is an evolutionarily conserved chromatin signature commonly associated with transcriptional activation. Histone acetylation levels are tightly regulated through the antagonistic activity of histone acetyltransferases (HATs) and histone deacetylases (HDACs). In plants, different families of HATs are present, including the MYST family, which comprises homologs of the catalytic subunit of the Nucleosome Acetyltransferase of H4 (NuA4) complex in yeast. This complex mediates acetylation of histones H4, H2A, and H2A.Z, and is involved in transcriptional regulation, heterochromatin silencing, cell cycle progression, and DNA repair in yeast. In Arabidopsis and, other plant species, homologs for most of the yeast NuA4 subunits are present and although the existence of this complex has not been demonstrated yet, compelling evidence supports the notion that this type of HAT complex functions from mosses to angiosperms. Recent proteomic studies show that several Arabidopsis homologs of NuA4 components, including the assembly platform proteins and the catalytic subunit, are associated in vivo with additional members of this complex suggesting that a NuA4-like HAT complex is present in plants. Furthermore, the functional characterization of some Arabidopsis NuA4 subunits has uncovered the involvement of these proteins in the regulation of different plant biological processes. Interestingly, for most of the mutant plants deficient in subunits of this complex characterized so far, conspicuous defects in flowering time are observed, suggesting a role for NuA4 in the control of this plant developmental program. Moreover, the participation of Arabidopsis NuA4 homologs in other developmental processes, such as gametophyte development, as well as in cell proliferation and stress and hormone responses, has also been reported. In this review, we summarize the current state of knowledge on plant putative NuA4 subunits and discuss the latest progress concerning the function of this chromatin modifying complex. |
| Databáze: | OpenAIRE |
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