title: A small sequence in domain v of the mitochondrial large ribosomal RNA restores Drosophila melanogaster pole cell determination in uv-irradiated embryos.
abstract: The mechanism by which the mitochondrial large rRNA is involved in the restoration of the pole cell-forming ability in Drosophila embryos is still unknown. We identified a 15-ribonucleotide sequence which is conserved from the protobacterium Wolbachia to the higher eukaryotes in domain V of the mitochondrial large rRNA. This short sequence is sufficient to restore pole cell determination in UV-irradiated Drosophila embryos. Here, we provide evidence that the conserved 15-base sequence is sufficient to restore luciferase activity in vitro. Moreover, we show that the internal GAGA sequence is involved in protein binding and that mutations in this tetranucleotide affect the sequence's ability to restore luciferase activity. The obtained results lead us to propose that mtlrRNA may be involved either in damaged protein reactivation or in protein biosynthesis during pole cell determination.
authors.affiliation: Dipartimento di Biologia Cellulare e Neuroscienze, Istituto Superiore di Sanità Viale Regina Elena, Roma, Italy.
authors.forename: Rossana
authors.initials: R
authors.lastname: Psaila
authors.forename: Donatella
authors.initials: D
authors.lastname: Ponti
authors.forename: Marta
authors.initials: M
authors.lastname: Ponzi
authors.forename: Franca
authors.initials: F
authors.lastname: Gigliani
authors.forename: Piero Augusto
authors.initials: PA
authors.lastname: Battaglia
mesh_terms: D000818:Animals; D001483:Base Sequence; D002454:Cell Differentiation; D002478:Cells, Cultured; D004331:Drosophila melanogaster / Q000196:embryology* / Q000378:metabolism; D004625:Embryo, Nonmammalian / Q000528:radiation effects*; D005260:Female; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D012313:RNA / Q000737:chemistry* / Q000378:metabolism; D000077278:RNA, Mitochondrial; D012336:RNA, Ribosomal, 16S / Q000737:chemistry* / Q000378:metabolism; D016601:RNA-Binding Proteins / Q000378:metabolism; D014466:Ultraviolet Rays
chemical_list: D000077278:RNA, Mitochondrial; D012336:RNA, Ribosomal, 16S; D016601:RNA-Binding Proteins; D012313:RNA
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