« Previous AbstractMultifunctional Layer-by-Layer Coating Based on a New Amphiphilic Block Copolymer via RAFT-Mediated Polymerization-Induced Self-Assembly Process    Next AbstractCell death and mitochondrial dysfunction induced by the dietary non-proteinogenic amino acid L-azetidine-2-carboxylic acid (Aze) »

MicroPubl Biol

Title:		Daughter cell-targeted mRNAs can achieve segregation without the universal Endoplasmic Reticulum docker She2p
Author(s):		Samardak K; Moriel-Carretero M;
Address:		"Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), Universite de Montpellier, Centre National de la Recherche Scientifique, 34293 Montpellier CEDEX 05, France"
Journal Title:		MicroPubl Biol
Year:		2021
Volume:		20210913
Issue:
Page Number:		-
DOI:		10.17912/micropub.biology.000458
ISSN/ISBN:		2578-9430 (Electronic) 2578-9430 (Linking)
Abstract:		"The establishment of cell polarity in eukaryotes involves the asymmetric distribution of messenger RNAs (mRNAs). In Saccharomyces cerevisiae, establishment of the cell polarity that gives rise to mother and daughter cells concurs with the selective targeting of more than 30 mRNAs toward the bud tip. Different mRNAs are segregated at different cell cycle stages, namely early during S phase, in a process dependent on anchoring to the endoplasmic reticulum (ER), or later in G(2) or mitosis, in an ER-independent manner. In spite of this difference, this transport requires in all cases the Myo4p motor and its interaction with actin, the adaptor protein She3p and a third, RNA-binding protein docking this complex at the mRNA itself. This protein is universally considered to be She2p. Yet, the majority of mRNAs whose segregation was shown to be She2p-dependent are not S-phase segregated ones. In other processes aimed at establishing polarity, such as during pheromone-stimulated G(1) arrest, the coupling of mRNAs to the ER during their transport is She2p-independent. We have therefore asked if the segregation to the bud of a model S-phase-specific mRNA, EAR1, is dependent on She2p or not. We report that a modest yet consistent percentage of EAR1 segregating particles achieves polarization without She2p. Our data invite to a re-evaluation of the absolute necessity for She2p for daughter cell-targeted mRNAs distribution"
Keywords:
Notes:		"PubMed-not-MEDLINESamardak, Kseniya Moriel-Carretero, Maria eng 2021/09/18 MicroPubl Biol. 2021 Sep 13; 2021:10.17912/micropub.biology.000458. doi: 10.17912/micropub.biology.000458. eCollection 2021"