期刊
WILEY INTERDISCIPLINARY REVIEWS-RNA
卷 9, 期 5, 页码 -出版社
WILEY
DOI: 10.1002/wrna.1480
关键词
5 ' TOP; La-related protein; LARP1; mRNA cap; mTORC1; RNA-binding protein; terminal oligopyrimidine; TIA; TIAR; TOP mRNA; translation regulation
类别
资金
- American Cancer Society [RSG-17-197-01-RMC]
- National Institute of General Medical Sciences [R01GM116889]
- Danish Council for Independent Research/Natural Sciences
- Prostate Cancer Canada
- US Department of Defense Prostate Cancer Training Award [W81XWH-10-1-0357]
The ribosome is an essential unit of all living organisms that commands protein synthesis, ultimately fuelling cell growth (accumulation of cell mass) and cell proliferation (increase in cell number). The eukaryotic ribosome consists of 4 ribosomal RNAs (rRNAs) and 80 ribosomal proteins (RPs). Despite its fundamental role in every living organism, our present understanding of how higher eukaryotes produce the various ribosome components is incomplete. Uncovering the mechanisms utilized by human cells to generate functional ribosomes will likely have far-reaching implications in human disease. Recent biochemical and structural studies revealed La-related protein 1 (LARP1) as a key new player in RP production. LARP1 is an RNA-binding protein that belongs to the LARP superfamily; it controls the translation and stability of the mRNAs that encode RPs and translation factors, which are characterized by a 5 terminal oligopyrimidine (5TOP) motif and are thus known as TOP mRNAs. The activity of LARP1 is regulated by the mammalian target of rapamycin complex 1 (mTORC1): a eukaryotic protein kinase complex that integrates nutrient sensing with mRNA translation, particularly that of TOP mRNAs. In this review, we provide an overview of the role of LARP1 in the control of ribosome production in multicellular eukaryotes. This article is categorized under: Translation > Translation Regulation RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Processing > Capping and 5 End Modifications
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