Functional Symmetry of Endomembranes
Overview
Molecular Biology
Authors
Affiliations
In higher eukaryotic cells pleiomorphic compartments composed of vacuoles, tubules and vesicles move from the endoplasmic reticulum (ER) and the plasma membrane to the cell center, operating in early biosynthetic trafficking and endocytosis, respectively. Besides transporting cargo to the Golgi apparatus and lysosomes, a major task of these compartments is to promote extensive membrane recycling. The endocytic membrane system is traditionally divided into early (sorting) endosomes, late endosomes and the endocytic recycling compartment (ERC). Recent studies on the intermediate compartment (IC) between the ER and the Golgi apparatus suggest that it also consists of peripheral ("early") and centralized ("late") structures, as well as a third component, designated here as the biosynthetic recycling compartment (BRC). We propose that the ERC and the BRC exist as long-lived "mirror compartments" at the cell center that also share the ability to expand and become mobilized during cell activation. These considerations emphasize the functional symmetry of endomembrane compartments, which provides a basis for the membrane rearrangements taking place during cell division, polarization, and differentiation.
Cellular Polarity Transmission to the Nucleus.
Nastaly P, Maiuri P Results Probl Cell Differ. 2022; 70:597-606.
PMID: 36348123 DOI: 10.1007/978-3-031-06573-6_21.
The Golgi Apparatus and its Next-Door Neighbors.
Nakano A Front Cell Dev Biol. 2022; 10:884360.
PMID: 35573670 PMC: 9096111. DOI: 10.3389/fcell.2022.884360.
Branched Actin Maintains Acetylated Microtubule Network in the Early Secretory Pathway.
Yoshimura A, Miserey-Lenkei S, Coudrier E, Goud B Cells. 2022; 11(1).
PMID: 35011578 PMC: 8750537. DOI: 10.3390/cells11010015.
Pavisic V, Mahmutefendic Lucin H, Blagojevic Zagorac G, Lucin P Life (Basel). 2021; 11(8).
PMID: 34440611 PMC: 8399710. DOI: 10.3390/life11080867.
A New Look at the Functional Organization of the Golgi Ribbon.
Saraste J, Prydz K Front Cell Dev Biol. 2019; 7:171.
PMID: 31497600 PMC: 6713163. DOI: 10.3389/fcell.2019.00171.