Molecular motors: directing traffic during RNA localization.
RNA localization, the enrichment of RNA in a specific subcellular region, is a mechanism for the establishment and maintenance of cellular polarity in a variety of systems. Ultimately, this results in a universal method for spatially restricting gene expression. Although the consequences of RNA localization are well-appreciated, many of the mechanisms that are responsible for carrying out polarized transport remain elusive. Several recent studies have illuminated the roles that molecular motor proteins play in the process of RNA localization. These studies have revealed complex mechanisms in which the coordinated action of one or more motor proteins can act at different points in the localization process to direct RNAs to their final destination. In this review, we discuss recent findings from several different systems in an effort to clarify pathways and mechanisms that control the directed movement of RNA.
PubMed ID: 21476929
PMC ID: PMC3181154
Grant support: GM071049 NIGMS NIH HHS , R01 GM071049-17 NIGMS NIH HHS , T32 GM007601-33 NIGMS NIH HHS , T32-GM07601 NIGMS NIH HHS