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SRX12839273: GSM5662349: METTL3_ChIP_rep1; Drosophila melanogaster; ChIP-Seq
1 ILLUMINA (HiSeq X Ten) run: 3.3M spots, 998.9M bases, 419.4Mb downloads

Submitted by: NCBI (GEO)
Study: Dynamic Control of Chromatin-associated m6A Methylation Regulates Nascent RNAs Stability [ChIP-seq Dm]
show Abstracthide Abstract
N6-methyladenosine (m6A) has been shown to regulate various aspects of mRNA biology. Although m6A has been shown to be co-transcriptionally deposited in mRNA by the chromatin-bound methyltranferase METTL3, the precise role of METTL3 and the resulting m6A methylation remain incompletely understood. Here, we demonstrate that the nascent RNAs generated from enhancers and promoters are co-transcriptionally and dynamically regulated by the chromatin bound METTL3/14 methyltransferase complex, and the demethylase, ALKBH5. Importantly, nascent RNA m6A is recognized by the reader protein hnRNP G, which prevents access of the RNA endonuclease INTS11 and thus protects nascent RNA from inappropriate degradation. Our study thus reveals an important chromatin function of m6A in stabilizing the enhancer- and promoter-derived nascent RNAs, which function to promote transcription activation. Overall design: Examination of METTL3 binding Fly S2 cells.
Sample: METTL3_ChIP_rep1
SAMN22786686 • SRS10784072 • All experiments • All runs
Library:
Instrument: HiSeq X Ten
Strategy: ChIP-Seq
Source: GENOMIC
Selection: ChIP
Layout: PAIRED
Construction protocol: Chromatin samples were incubated with specific antibodies in the ChIP Lysis buffer (20 mM Tris-HCl pH8.1, 150 mM NaCl, 2 mM EDTA, 1% TritonX-100 and 0.05% SDS) overnight at 4℃. The protein-DNA complexes were immobilized on pre-washed protein A/G beads (20μl per reaction). The bound fractions were washed 3 times with the Lysis buffer, and twice with the Low Salt Wash buffer (10 mM Tris-HCl, 250 mM LiCl, 1 mM EDTA, 0.5% NP-40, 0.5% Na-deoxylcholate), and once with 10 mM Tris-HCl pH8.0. Elution and reverse crosslinking were carried out in the Elution buffer (50 mM Tris-HCl pH8.0, and 1% SDS) at 65℃ for 5 hours. After 1 hour of RNase A (1unit/μl) at 37℃ and Proteinase K (1unit/μl) digestion at 55℃, DNA samples were then purified using PCR extraction kit (QIAGEN #28006). The precipitated DNA samples were prepared for DNA deep sequencing according to manufacturer's guidelines (SWIFT, #21096).
Experiment attributes:
GEO Accession: GSM5662349
Links:
Runs: 1 run, 3.3M spots, 998.9M bases, 419.4Mb
Run# of Spots# of BasesSizePublished
SRR166384743,329,820998.9M419.4Mb2022-03-03

ID:
17501155

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