1. The Pax protein Eyegone (Eyg) interacts with the pi-RNA component Aubergine (Aub) and controls egg chamber development in Drosophila.
- Author
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Blom-Dahl D and Azpiazu N
- Subjects
- Animals, Cytoplasm genetics, DNA-Binding Proteins genetics, Drosophila Proteins genetics, Drosophila melanogaster, Female, Heterochromatin genetics, Heterochromatin metabolism, Intercellular Signaling Peptides and Proteins, Nuclear Proteins genetics, Nuclear Proteins metabolism, Paxillin genetics, Paxillin metabolism, Peptide Initiation Factors genetics, RNA, Messenger genetics, RNA, Messenger metabolism, RNA-Binding Proteins genetics, RNA-Binding Proteins metabolism, Retroelements, Cytoplasm metabolism, DNA-Binding Proteins metabolism, Drosophila Proteins metabolism, Ovary metabolism, Ovum metabolism, Peptide Initiation Factors metabolism
- Abstract
The eyegone (eyg) gene encodes Eyg, a transcription factor of the Pax family with multiple roles during Drosophila development. Eyg has been shown to be nuclear in the cells where it functions. In this report we describe a new functional cytoplasmic distribution of Eyg during egg chamber development in the female ovarioles. The protein is present from the germarium until stage 10 of cyst development. The majority of egg chambers that develop in the absence of Eyg arrest their development before stage 10, show augmented levels of the telomeric retro-transposon TART-A and low levels of heterochromatin marks in the oocyte nucleus. During the maternal to zygotic transition (MTZ) Eyg seems to play a role in destabilizing germ cell less (gcl) and oo 16 RNA binding protein (orb) mRNAs. We were able to show that Eyg interacts with Aubergine (Aub), a component of the pi-RNA pathway during egg chamber development. This interaction could be essential for Eyg to be retained in the cytoplasm and fulfill its functions there., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2018
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