Similar Datasets
Project description:Testing conditions for ribosome profiling in Drosophila melanogaster
| PRJNA700841 | ENA
Project description:Ribosomes can read through stop codons in a regulated manner, elongating rather than terminating the nascent peptide. Stop codon readthrough is essential to diverse viruses, and phylogenetically predicted to occur in a few hundred genes in Drosophila melanogaster, but the importance of regulated readthrough in eukaryotes remains largely unexplored. Here, we present a ribosome profiling assay (deep sequencing of ribosome-protected mRNA fragments) for Drosophila melanogaster, and provide the first genome-wide experimental analysis of readthrough. Readthrough is far more pervasive than expected: the vast majority of readthrough events evolved within D. melanogaster and were not predicted phylogenetically. The resulting C-terminal protein extensions show evidence of selection, contain functional subcellular localization signals, and their readthrough is regulated, arguing for their importance. We further demonstrate that readthrough occurs in yeast and humans. Readthrough thus provides general mechanisms both to regulate gene expression and function, and to add plasticity to the proteome during evolution.
2013-12-05 | GSE49197 | GEO
Project description:Ribosomes can read through stop codons in a regulated manner, elongating rather than terminating the nascent peptide. Stop codon readthrough is essential to diverse viruses, and phylogenetically predicted to occur in a few hundred genes in Drosophila melanogaster, but the importance of regulated readthrough in eukaryotes remains largely unexplored. Here, we present a ribosome profiling assay (deep sequencing of ribosome-protected mRNA fragments) for Drosophila melanogaster, and provide the first genome-wide experimental analysis of readthrough. Readthrough is far more pervasive than expected: the vast majority of readthrough events evolved within D. melanogaster and were not predicted phylogenetically. The resulting C-terminal protein extensions show evidence of selection, contain functional subcellular localization signals, and their readthrough is regulated, arguing for their importance. We further demonstrate that readthrough occurs in yeast and humans. Readthrough thus provides general mechanisms both to regulate gene expression and function, and to add plasticity to the proteome during evolution. 12 samples of Drosophila ribosome profiling and poly(A)+ mRNA-seq, including technical replicates in S2 cells, and biological replicates of 0-2 hour embryos
2013-12-05 | E-GEOD-49197 | biostudies-arrayexpress
Project description:Ribosomes can read through stop codons in a regulated manner, elongating rather than terminating the nascent peptide. Stop codon readthrough is essential to diverse viruses, and phylogenetically predicted to occur in a few hundred genes in Drosophila melanogaster, but the importance of regulated readthrough in eukaryotes remains largely unexplored. Here, we present a ribosome profiling assay (deep sequencing of ribosome-protected mRNA fragments) for Drosophila melanogaster, and provide the first genome-wide experimental analysis of readthrough. Readthrough is far more pervasive than expected: the vast majority of readthrough events evolved within D. melanogaster and were not predicted phylogenetically. The resulting C-terminal protein extensions show evidence of selection, contain functional subcellular localization signals, and their readthrough is regulated, arguing for their importance. We further demonstrate that readthrough occurs in yeast and humans. Readthrough thus provides general mechanisms both to regulate gene expression and function, and to add plasticity to the proteome during evolution. DOI: http://dx.doi.org/10.7554/eLife.01179.001.
| S-EPMC3840789 | biostudies-literature
Project description:Ribosome profiling in cyanobacteria
| PRJEB28203 | ENA
Project description:Ribosomes have long been thought of as homogeneous macromolecular machines, but recent evidence suggests they are heterogeneous and could be specialised to regulate translation. Here, we have isolated ribosomal complexes and characterised their protein content across 4 tissues of Drosophila melanogaster via TMT-MS. We find that testes and ovaries contain the most heterogeneous ribosome populations, which occurs through a combination of ribosomal protein paralog-enrichment and ribosomal protein paralog-switching. We have also solved structures of ribosomes isolated from tissues by cryo-EM, revealing differences in precise ribosomal arrangement for testis and ovary 80S ribosomes. Differences in the amino acid composition of paralog pairs and their localisation on the ribosome exterior indicate paralog-switching could alter the ribosome surface, enabling different proteins to regulate translation. One testis-specific paralog-switching pair is also found in humans, suggesting this is a conserved site of ribosome heterogeneity. Overall, this work allows us to propose that mRNA translation might be regulated in the gonads through ribosome heterogeneity, providing a potential means of ribosome specialisation.
2021-07-22 | PXD026227 | Pride
Project description:In general, RNA-binding proteins act to modulate gene expression at transcript level through degradation or at protein level through translation. To elucidate the effect of Whi3, a yeast RNA binding protein, on gene expression, we performed ribosome profiling experiment on whi3 mutant and wildtype cells. Comparison ribosome profiling and RNA-seq data between whi3 mutant and wildtype cells
2013-09-26 | E-GEOD-51164 | biostudies-arrayexpress
Project description:Ribosome profiling of LS180 cells
| PRJNA870767 | ENA
Project description:Ribonuclease Selection for Ribosome Profiling
| PRJNA324380 | ENA