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  1. ...to chromatin compaction or PTMs as well as competition from other binding proteins. Consequently, EMSA can be applied to rule out DNA–protein interactions: If a protein is not able to bind the sequence of interest in an EMSA assay, it is unlikely that this interaction occurs in nature; however, positive...
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  2. .... 2019; Wang et al. 2019). Tetrahymena contains within the same cytoplasmic compartment two types of nuclei, the somatic macronucleus (MAC) and the germline micronucleus (MIC) (Karrer 2012). Although missing in the transcriptionally silent MIC, 6mA is abundantly present in the transcriptionally active...
  3. ...to eukaryotes and most archaea, with eukaryotic nucleosomal histones deriving from their archaeal ancestors. In contrast, bacteria lack histones as a rule. However, histone proteins have recently been identified in a few bacterial clades, most notably the phylum Bdellovibrionota, and these histones have been...
  4. ...-birth events traceable in extant s. Owing to their amenability to experimental evolutionary analysis and their strain-level variation in gene contents, bacteria offer the opportunity to identify forms of de novo gene birth that are not readily captured by conventional detection methods.De novo transcription...
  5. ...was resuspended in 20 μL of DEPC-treated water and the quality assessed by 2% agarose gel electrophoresis.RNAi-mediated knockdownFresh control and RNAi feeding E. coli were cultured and induced by IPTG to express dsRNA of the target gene as described above. After induction, bacteria were washed and resuspended...
  6. ...organisms. Accumulating evidence suggests that, from bacteria to human, tsRNAs are not merely intermediates of the tRNA maturation process or residues of the tRNA degradation process as their biogenesis can show elaborate spatiotemporal patterns (Kumar et al. 2016; Sharma et al. 2016; Li et al. 2018; Dou et...
  7. ...integrated analyses of single-cell RNA-seq data from multiple human tissues and organs. Single-cell epigenomic data further indicate that the expression is likely driven by an alternative promoter at the end of the first exon, resulting in at least one shorter transcript (referred to as sXIST) that is active...
  8. ....Splicing is a ubiquitous and essential post-transcriptional modification of precursor mRNAs. In this process, introns are excised and the two flanking exons are stitched together. Canonical splicing covalently connects the 3′ end of an upstream exon to the 5′ end of the immediate downstream exon. A class of noncanonical...
  9. ...-scaled time point of nascent RNA labeling following DRB release provides a direct and quantitative view of this initial transcriptional slow phase. Between 5 and 10 min, elongation rates increased slightly and then accelerated in the 1015-min interval as RNAPII moved deeper into gene bodies (Fig. 4F...
  10. ...also considered that the direction of regulation may not be the same across a regulatory cascade or pathway. For example, although activators typically promote gene expression by facilitating the recruitment of RNA polymerase and transcriptional machinery, their effects on downstream targets can...
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