Localization-Dependent Oskar Protein Accumulation
نویسندگان
چکیده
منابع مشابه
Localization of oskar RNA regulates oskar translation and requires Oskar protein.
The site of oskar RNA and protein localization within the oocyte determines where in the embryo primordial germ cells form and where the abdomen develops. Initiation of oskar RNA localization requires the activity of several genes. We show that ovaries mutant for any of these genes lack Oskar protein. Using various transgenic constructs we have determined that sequences required for oskar RNA l...
متن کاملDrosophila valois encodes a divergent WD protein that is required for Vasa localization and Oskar protein accumulation.
valois (vls) was identified as a posterior group gene in the initial screens for Drosophila maternal-effect lethal mutations. Despite its early genetic identification, it has not been characterized at the molecular level until now. We show that vls encodes a divergent WD domain protein and that the three available EMS-induced point mutations cause premature stop codons in the vls ORF. We have g...
متن کاملThe actin-binding protein Lasp promotes Oskar accumulation at the posterior pole of the Drosophila embryo.
During Drosophila oogenesis, Oskar mRNA is transported to the posterior pole of the oocyte, where it is locally translated and induces germ-plasm assembly. Oskar protein recruits all of the components necessary for the establishment of posterior embryonic structures and of the germline. Tight localization of Oskar is essential, as its ectopic expression causes severe patterning defects. Here, w...
متن کاملLocalization-dependent translation requires a functional interaction between the 5' and 3' ends of oskar mRNA.
The precise restriction of proteins to specific domains within a cell plays an important role in early development and differentiation. An efficient way to localize and concentrate proteins is by localization of mRNA in a translationally repressed state, followed by activation of translation when the mRNA reaches its destination. A central issue is how localized mRNAs are derepressed. In this s...
متن کاملCup-ling oskar RNA localization and translational control
RNA localization and spatially restricted translational control can serve to deploy specific proteins to particular places within a cell. oskar (osk) RNA is a key initiatior of posterior patterning and germ cell specification in Drosophila, and its localization and translation are under elaborate control. In this issue, Wilhelm et al. (2003) show that the protein Cup both promotes osk localizat...
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ژورنال
عنوان ژورنال: Developmental Cell
سال: 2004
ISSN: 1534-5807
DOI: 10.1016/j.devcel.2004.06.009