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XB-ART-45058
Int Rev Cell Mol Biol 2012 Jan 01;295:233-89. doi: 10.1016/B978-0-12-394306-4.00013-7.
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New insights into the regulation of RNP granule assembly in oocytes.

Schisa JA .


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In a variety of cell types in plants, animals, and fungi, ribonucleoprotein (RNP) complexes play critical roles in regulating RNA metabolism. These RNP granules include processing bodies and stress granules that are found broadly across cell types, as well as RNP granules unique to the germline, such as P granules, polar granules, sponge bodies, and germinal granules. This review focuses on RNP granules localized in oocytes of the major model systems, Caenorhabditis elegans, Drosophila, Xenopus, mouse, and zebrafish. The signature families of proteins within oocyte RNPs include Vasa and other RNA-binding proteins, decapping activators and enzymes, Argonaute family proteins, and translation initiation complex proteins. This review describes the many recent insights into the dynamics and functions of RNP granules, including their roles in mRNA degradation, mRNA localization, translational regulation, and fertility. The roles of the cytoskeleton and cell organelles in regulating RNP granule assembly are also discussed.

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Species referenced: Xenopus
Genes referenced: ddx4

References [+] :
Amikura, Tudor protein is essential for the localization of mitochondrial RNAs in polar granules of Drosophila embryos. 2001, Pubmed