N1-methyladenosine methylome in messenger RNA in petunia
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA564045 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR10071669_1.fastq.gz | Fastqsanger.gz | |||
| SRR10071669_2.fastq.gz | Fastqsanger.gz | |||
| SRR10071670_1.fastq.gz | Fastqsanger.gz | |||
| SRR10071670_2.fastq.gz | Fastqsanger.gz | |||
| SRR10071671_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 20 |
Similar Datasets
Project description:N1-methyladenosine is a unique base methylation because it blocks Watson-Crick base paring and introduces a positive charge. Previous studies showed that m1A is prevalent in yeast and mammals mRNA and has a functional role in promoting translation of methylated mRNA. However, little is known about its abundance, topology and dynamics in plant mRNA. In this study, dot blotting and LC–MS/MS analyses reveal a dynamic pattern of m1A mRNA modification in various tissues and at different developmental stages in petunia (Petunia hybrida). Transcriptome-wide profiling of mRNA m1A in petunia was reported by applying m1A mRNA immunoprecipitation followed by a deep-sequencing approach (m1A-seq). m1A-seq analysis identified 4993 m1A peaks in 3231 expressed genes in petunia corollas. Each methylated gene averagely carries 1.55 peaks. Among the identified m1A peaks, there are 251 m1A peaks in which the adenines was partly replaced by thymine (T) and/or the reverse transcription stops happened in adenine site, in 199 expressed genes. We found that m1A is enriched in coding sequences with one peaks located immediately after start codons, and a slight negative correlation between methylated genes and gene expression was observed. Totally, ethylene treatment reduced the m1A level of mRNA in petunia corollas. We show that a RNA m1A-methyltransferase, tRNA specific methyltransferase 61A (PhTRMT61A), is an m1A mRNA methyltransferase. PhTRMT61A silencing results in decreased m1A peaks in mRNA in leaves and abnormal leaf development. PhTRMT61A is located to the nucleus. Our results suggest that m1A in mRNA is an important epitranscriptome marker and plays a role in plant development.
2020-08-12 | GSE136921 | GEO
Project description:To investigate the function of N1-methyladenosine methylome (m1A) in ocular melanoma, we analyzed m1A enrichment level in ocular melanoma and melanocyte cell lines and established ALKBH3 knock down cell lines in 92.1.
2022-09-22 | GSE213748 | GEO
Project description:Gene expression can be post-transcriptionally regulated via dynamic and reversible RNA modifications. N1-methyladenosine (m1A) is a recently identified mRNA modification; however, little is known about its precise location, regulation and function. Here, we develop a single-nucleotide resolution m1A profiling method, based on m1A-induced misincorporation during reverse transcription, and report distinct classes of m1A methylome in the human transcriptome. m1A in the 5’-untranslated region, particularly those located exactly at the first nucleotide of mRNA transcripts, associates with increased translation efficiency. A different subset of m1A sites exhibit a GUUCRA tRNA-like motif, are evenly distributed in the transcriptome and are dependent on the methyltransferase complex TRMT6/61A. Additionally, we show for the first time that m1A is prevalent in the mitochondrial-encoded transcripts. Manipulation of m1A level via TRMT61B, a mitochondria-localizing m1A methyltransferase, demonstrates that m1A in mitochondrial mRNA interferes with translation. Collectively, our approaches reveal distinct classes of m1A methylome and provide a resource for functional studies of m1A-mediated epitranscriptomic regulation.
2017-10-18 | GSE102040 | GEO
Project description:N1-Methyladenosine (m1A) is a prevalent post-transcriptional RNA modification, yet little is known about its abundance, topol- ogy and dynamics in mRNA. Here, we show that m1A is prevalent in Homo sapiens mRNA, which shows an m1A/A ratio of ~0.02%. We develop the m1A-ID-seq technique, based on m1A immunoprecipitation and the inherent ability of m1A to stall reverse tran- scription, as a means for transcriptome-wide m1A profiling. m1A-ID-seq identifies 901 m1A peaks (from 600 genes) in mRNA and noncoding RNA and reveals a prominent feature, enrichment in the 5' untranslated region of mRNA transcripts, that is dis- tinct from the pattern for N6-methyladenosine, the most abundant internal mammalian mRNA modification. Moreover, m1A in mRNA is reversible by ALKBH3, a known DNA/RNA demethylase. Lastly, we show that m1A methylation responds dynamically to stimuli, and we identify hundreds of stress-induced m1A sites. Collectively, our approaches allow comprehensive analysis of m1A modification and provide tools for functional studies of potential epigenetic regulation via the reversible and dynamic m1A methylation.
2016-02-05 | GSE73941 | GEO
Project description:N6-methyladenosine-Mediated Nuclear Export of Messenger RNA
| PRJNA300279 | ENA
Project description:N6-methyladenosine (m6A) is the most abundant internal messenger (mRNA) modification in mammalian mRNA. This modification is reversible and non-stoichiometric, which potentially adds an additional layer of variety and dynamic control of mRNA metabolism. The m6A-modified mRNA can be selectively recognized by the YTH family “reader” proteins. The preferential binding of m6A-containing mRNA by YTHDF2 is known to reduce the stability of the target transcripts; however, the exact effects of m6A on translation has yet to be elucidated. Here we show that another m6A reader protein, YTHDF1, promotes ribosome loading of its target transcripts. YTHDF1 forms a complex with translation initiation factors to elevate the translation efficiency of its bound mRNA. In a unified mechanism of translation control through m6A, the YTHDF2-mediated decay controls the lifetime of target transcripts; whereas, the YTHDF1-based translation promotion increases the translation efficiency to ensure effective protein production from relatively short-lived transcripts that are marked by m6A. PAR-CLIP and RIP was used to identify YTHDF1 binding sites followed by ribosome profling and RNA seq to assess the consequences of YTHDF1 siRNA knock-down
2015-06-09 | E-GEOD-63591 | biostudies-arrayexpress
Project description:N6-methyladenosine (m6A) is the most common internal modification in eukaryotic messenger RNA (mRNA). The effects of this reversible cheimcal modification are mediated in part by methyl-specific RNA binding protein 'readers' of the YTH family. In this study we present the function of YTHDC1 (YT521) in promoting the export of mRNA from the nucleus to the cytoplasm. Additionally, we identify a role for YTHDC1 in exon retention in mouse embryonic stem cells (mESCs).
2017-10-12 | GSE74397 | GEO
Project description:N6-methyladenosine (m6A) is the most abundant internal modification in the messenger RNA (mRNA) of all higher eukaryotes. This modification has been shown to be reversible in mammals; it is installed by a methyltransferase heterodimer complex of METTL3 and METTL14 bound with WTAP, and reversed by iron(II)- and α-ketoglutarate-dependent demethylases FTO and ALKBH5. This modification exhibits significant functional roles in various biological processes. The m6A modification as a RNA mark is recognized by reader proteins, such as YTH domain family proteins and HNRNPA2B1; m6A can also act as a structure switch to affect RNA-protein interactions for biological regulation. In Arabidopsis thaliana, the methyltransferase subunit MTA (the plant orthologue of human METTL3, encoded by At4g10760) was well characterized and FIP37 (the plant orthologue of human WTAP) was first identified as the interacting partner of MTA. Here we report the discovery and characterization of reversible m6A methylation mediated by AtALKBH10B (encoded by At4g02940) in A. thaliana, and noticeable roles of this RNA demethylase in affecting plant development and floral transition. Our findings reveal potential broad functions of reversible mRNA methylation in plants. m6A peaks were identified from wild type Columbia-0 and atalkbh10b-1 mutant in two biological replicates
2016-03-24 | E-GEOD-79523 | biostudies-arrayexpress
Project description:To identify N6-methyladenosine RNA methylome in human prostate cell lines, MeRIP-seq of RWPE-1 and LNCaP were performed.
2021-08-11 | GSE147885 | GEO
Project description:Gene expression can be regulated post-transcriptionally through dynamic and reversible RNA modifications. A recent noteworthy example is N(6)-methyladenosine (m(6)A), which affects messenger RNA (mRNA) localization, stability, translation and splicing. Here we report on a new mRNA modification, N(1)-methyladenosine (m(1)A), that occurs on thousands of different gene transcripts in eukaryotic cells, from yeast to mammals, at an estimated average transcript stoichiometry of 20% in humans. Employing newly developed sequencing approaches, we show that m(1)A is enriched around the start codon upstream of the first splice site: it preferentially decorates more structured regions around canonical and alternative translation initiation sites, is dynamic in response to physiological conditions, and correlates positively with protein production. These unique features are highly conserved in mouse and human cells, strongly indicating a functional role for m(1)A in promoting translation of methylated mRNA.
| S-EPMC4842015 | biostudies-literature