Ontology highlight
ABSTRACT:
PROVIDER: PRJNA514029 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR8424220.fastq.gz | Fastqsanger.gz | |||
| SRR8424230_1.fastq.gz | Fastqsanger.gz | |||
| SRR8424230_2.fastq.gz | Fastqsanger.gz | |||
| SRR8424221.fastq.gz | Fastqsanger.gz | |||
| SRR8424222.fastq.gz | Fastqsanger.gz |
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Similar Datasets
Project description:we used RNA-Seq to quantify the RNA editing level at more than 8,000 previously annotated exonic A-to-I RNA editing sites in two brain regions - prefrontal cortex and cerebellum - of humans, chimpanzees and rhesus macaques. We observed substantial conservation of RNA editing levels between the brain regions, as well as among the three primate species. Evolutionary changes in RNA editing were nonetheless evident among the species. Across lifespan, we observed an increase of the RNA editing level with advanced age in both brain regions of all three primate species.
2014-01-07 | GSE45244 | GEO
Project description:we used RNA-Seq to quantify the RNA editing level at more than 8,000 previously annotated exonic A-to-I RNA editing sites in two brain regions - prefrontal cortex and cerebellum - of humans, chimpanzees and rhesus macaques. We observed substantial conservation of RNA editing levels between the brain regions, as well as among the three primate species. Evolutionary changes in RNA editing were nonetheless evident among the species. Across lifespan, we observed an increase of the RNA editing level with advanced age in both brain regions of all three primate species. poly(A) enriched RNAs extracted from pooled samples of two brain regions: CBC and PFC of chimpanzee and macaque, fragmented, revers transcribed to double-stranded cDNA using random hexamers. Sequencing libraries were prepared according to the paired-end non-strand-specific sample preparation protocol of Illumina. Each sample was sequenced in a separate lane in the Illumina Genome Analyzer II system, using the 75-bp paired-end sequencing protocol. human data was downloaded from SRA [SRP005169]
2014-01-07 | E-GEOD-45244 | biostudies-arrayexpress
Project description:RNA editing is essential for processing transcripts in plant chloroplasts and mitochondria. Levels of RNA editing vary between lineages, but some hornworts, lycophytes and ferns have an extraordinary abundance of RNA editing. A feature of ‘hyper-editing’ species is the prevalence of RNA editing events which influence translation by affecting start codons and stop codons via C-to-U editing and U-to-C editing respectively. These ‘translationally significant’ RNA editing events may play roles in regulating organelle gene expression. To investigate the importance of translationally significant RNA editing events, we generated DNA and RNA sequence libraries for four Salviniales water ferns: Azolla rubra, Azolla pinnata, Marsilea mutica and Salvinia molesta. We assembled chloroplast genomes, mitochondrial genes and transcriptomes, and identified RNA editing sites and candidate RNA editing factors. We re-analysed sequence data of Azolla filiculoides and conducted a comparative analysis of RNA editing in chloroplasts and mitochondrial transcripts. Estimates of pyrimidine transition rates show that translationally significant RNA editing sites are more conserved than other non-synonymous editing sites, suggesting an emergent role in organelle gene expression that is not selectively neutral. Shotgun proteomics of Marsilea mutica chloroplast thylakoid fractions verified the expected consequences of RNA editing on translation of chloroplast transcripts and implies that mechanisms exist to avoid translation of partially edited transcripts. Start codon editing may be one of those mechanisms.
2025-10-27 | PXD065205 | Pride
Project description:The predominant form of RNA editing in animals is the enzymatic conversion of adenosine to inosine that is sequenced in cDNA as guanine. While RNA editing should be identifiable from RNA-seq data alone, genomic SNPs as well as sequencing and mapping errors result in a high false-positive rate. We used Inosine Chemical Erasing (ICE) with deep sequencing (ICE-seq) in order to validate A-to-I RNA editing genome-wide without the need for the sequencing of the underlying genomic DNA. We called RNA editing events in the head transcriptome of the reference strain of Drosophila melanogaster and six resequenced strains of Drosophila yakuba using the Illumina HiSeq and NextSeq platforms. We compared RNA editing sites reported in other studies and measured the level of conservation between D. melanogaster and D. yakuba. We found that while some of the best-studied editing sites in D. melanogaster are also edited in D. yakuba, we also detect a significant amount of species-specific editing in genes with different Gene Ontology enrichments, which suggests that the biological function of RNA editing in the two Drosophila species is diverging.
2017-04-23 | GSE60851 | GEO
Project description:Eusocial insects have evolved the capacity to generate adults with distinct morphological, reproductive and behavioural phenotypes from the same genome. Recent studies suggest that RNA editing might enhance the diversity of gene products at the post-transcriptional level, particularly to induce functional changes in the nervous system. Using head samples from the leaf-cutting ant Acromyrmex echinatior, we compare RNA editomes across eusocial castes, identifying ca. 11,000 RNA editing sites in gynes, large workers and small workers. Those editing sites map to 800 genes functionally enriched for neurotransmission, circadian rhythm, temperature response, RNA splicing and carboxylic acid biosynthesis. Most A. echinatior editing sites are species specific, but 8M-bM-^@M-^S23% are conserved across ant subfamilies and likely to have been important for the evolution of eusociality in ants. The level of editing varies for the same site between castes, suggesting that RNA editing might be a general mechanism that shapes caste behaviour in ants. Analysis of genome-wide RNA editing in three different female castes of the the leaf-cutting ant Acromyrmex echinatior.
2014-10-02 | E-GEOD-51576 | biostudies-arrayexpress
Project description:Purpose: Validation of Drosophila A-to-I editing sites Methods: We collected heads of 5 day old male dAdar-/- mutant (y, Adar5G1, w)26 and wild type (w1118) flies. Poly(A)+ RNA was used to prepare RNA-seq libraries which were subsequently sequenced single-end by an Illumina GAII Results:We builded a framework to identify RNA editing events using RNA-seq data alone in Drosophila. To validate whether the identified A-to-G sites were bona fide A-to-I editing events, we performed RNA-seq for the D.melanogaster wild-type strain (w1118) and for the Adar5G1 null mutant that eliminates RNA editing. We found that our method achieved high accuracy; 98.2% of all A-to-G sites showed only adenosine in the Adar5G1 sample Conclusions: We anticipate that our method will be very effective in the future to identify RNA editing events in different species. mRNA profiles of heads of 5 day old male dAdar-/- mutant (y, Adar5G1, w)26 and wild type (w1118) flies
2012-12-20 | E-GEOD-42815 | biostudies-arrayexpress
Project description:Eusocial insects have evolved the capacity to generate adults with distinct morphological, reproductive and behavioural phenotypes from the same genome. Recent studies suggest that RNA editing might enhance the diversity of gene products at the post-transcriptional level, particularly to induce functional changes in the nervous system. Using head samples from the leaf-cutting ant Acromyrmex echinatior, we compare RNA editomes across eusocial castes, identifying ca. 11,000 RNA editing sites in gynes, large workers and small workers. Those editing sites map to 800 genes functionally enriched for neurotransmission, circadian rhythm, temperature response, RNA splicing and carboxylic acid biosynthesis. Most A. echinatior editing sites are species specific, but 8–23% are conserved across ant subfamilies and likely to have been important for the evolution of eusociality in ants. The level of editing varies for the same site between castes, suggesting that RNA editing might be a general mechanism that shapes caste behaviour in ants.
2014-10-02 | GSE51576 | GEO
Project description:RNA editing by adenosine deamination is well-positioned to diversify proteomes, but it is infrequently used for this purpose. Recent reports have suggested that squid may be an exception. We show that extensive recoding by RNA editing is an invention of the behaviorally sophisticated coleoid cephalopods, with tens of thousands of evolutionarily conserved sites. Editing is enriched in the nervous system and targets excitability and neuronal morphology. Many edited codons are translated into protein and in some cases cause functional changes. The genomic sequence flanking these sites is highly conserved to maintain the structures required for editing, suggesting that the process confers a selective advantage. Due to the large number of sites, the surrounding conservation greatly reduces the number of mutations and genomic polymorphisms that accumulate in protein coding regions. This trade-off between genome evolution and transcriptome plasticity highlights the importance of RNA recoding as a novel strategy for neural complexity.
2017-04-11 | PXD005827 | Pride
Project description:We obtained a total of 8.4 GB and 10.8 GB transcript sequence data from ‘Xuzhou142’ and ‘fl’ cultivars, respectively, which correspond to 43,532,778 and 55,844,768 reads. After quality assessment, the clean sequences where 43,036,504 and 55,325,412, respectively. Comparison of the RNA-seq data with genomic sequences revealed that 692 RNA editing sites were identified in mitochondrial genes, all of which were C-to-U conversions except for 13 U-to-C changes. we conducted a comparative transcriptome analysis of mitochondrial protein coding genes and investigated differences in RNA editing between the mitochondrial transcripts of G. hirsutum var. Xuzhou142 (WT) fiber and its near isogenic line, fuzzless-lintless mutant (fl) ovule. No significant difference was observed in the distribution of RNA editing sites in the non-coding regions between fiber and ovule cells. However, the editing efficiency of complex I, complex V, Ribosomal protein, and matR protein coding genes exhibited significant differences between fiber and ovule. Our results showed RNA editing events are abundant in the mitochondrial genome of cotton and some editing sites may closely associated with fiber elongation.
2018-12-21 | GSE109782 | GEO
Project description:<p>We have deeply sequenced total RNA and whole exome of six different post-mortem human snap-frozen tissues (brain, liver, lung, striated muscle, kidney, heart) from three unrelated healthy Caucasian individuals (males, aged 47-54) with the aim to characterize post-transcriptional events due to alternative splicing and RNA editing. In addition, to facilitate the detection of RNA editing sites we have also resequenced the entire genome of each individual. Data are also used to investigate tissue-specific abundance of mitochondrial DNA from exomes and its correlation with mitochondrial transcription, mass and respiratory activity.</p> <p>Tissues were obtained from Cureline (South San Francisco, CA, USA). DNA and RNA were purified using the DNeasy Blood and Tissue Kit (Qiagen, Hilden, Germany) and the RNeasy Plus Mini Kit (Qiagen, Hilden, Germany), respectively.</p> <p>Exome capture was performed using the TruSeq Exome Enrichment Kit (Illumina, San Diego, CA) and the sequencing was carried out at IGA Technology Services in Udine (Italy) on Illumina HiSeq 2000 (generating for each tissue approximately 40 millions of 100bp paired-end reads). </p> <p>Strand-oriented RNA reads (2x100bp) were generated using the TruSeq Stranded Total RNA Sample Prep Kit (Illumina, San Diego, CA, USA) and sequenced at IGA Technology Services in Udine (Italy) on Illumina HiSeq 2000 platform.</p> <p>Whole genome resequencing was performed at Personal Genomics in Italy on an Illumina HiSeq 2000 platform (2x100bp) with a mean coverage of 30X.</p> <p>MiRNA-Seq was instead performed at IBBE Institute (Italy) using the TruSeq Small RNA Sample Prep Kit on Illumina MiSeq platform.</p> <p>Preliminary bioinformatics analyses have been performed to check quality using FASTQC software and inconsistent read regions have been trimmed using trim_galore. All reads were mapped onto the human reference genome (version hg19) using GSNAP.</p>
| phs000870 | dbGaP