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Alternative silencing states of transposable elements in Arabidopsis associated with H3K27me3.
Genome Biol
January 2025
Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, Centre National de La Recherche Scientifique (CNRS), Commissariat À L'EnergieAtomique (CEA), Gif-Sur-Yvette, 91190, France.
Background: The DNA/H3K9 methylation and Polycomb-group proteins (PcG)-H3K27me3 silencing pathways have long been considered mutually exclusive and specific to transposable elements (TEs) and genes, respectively in mammals, plants, and fungi. However, H3K27me3 can be recruited to many TEs in the absence of DNA/H3K9 methylation machinery and sometimes also co-occur with DNA methylation.
Results: In this study, we show that TEs can also be solely targeted and silenced by H3K27me3 in wild-type Arabidopsis plants.
Enzymatic ester bond formation strategies in fungal macrolide skeletons.
Nat Prod Rep
January 2025
College of Pharmaceutical Sciences, Southwest University, 400715 Chongqing, China.
Covering: up to August 2024Macrolides, the core skeletons of numerous marketed drugs and bioactive natural products, have garnered considerable scientific interest owing to their structural diversity and broad spectrum of pharmaceutical activities. The formation of intramolecular ester bonds is a critical biocatalytic step in constructing macrolide skeletons. Here, we summarised enzymatic ester bond formation strategies in fungal polyketide (PK)-type, nonribosomal peptide (NRP)-type, and PK-NRP hybrid-type macrolides.
View Article and Find Full Text PDFReversing anther thermotolerance by manipulating the cis-elements in the promoter of a high-temperature upregulated gene Casein Kinase I in upland cotton.
Sci China Life Sci
January 2025
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.
High temperature (HT) stress causes male sterility, leading to reduced upland cotton yield. Previously, we identified a key gene, Casein Kinase I (GhCKI), that negatively regulates male fertility in upland cotton under HT. However, conventional genetic manipulations of GhCKI would result in male sterility, hindering its utilization in breeding programs.
View Article and Find Full Text PDFTranscriptome-wide outlier approach identifies individuals with minor spliceopathies.
medRxiv
January 2025
Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA.
RNA-sequencing has improved the diagnostic yield of individuals with rare diseases. Current analyses predominantly focus on identifying outliers in single genes that can be attributed to cis-acting variants within the gene locus. This approach overlooks causal variants with trans-acting effects on splicing transcriptome-wide, such as variants impacting spliceosome function.
View Article and Find Full Text PDFNaP-TRAP reveals the regulatory grammar in 5'UTR-mediated translation regulation during zebrafish development.
Nat Commun
December 2024
Department of Genetics, Yale University, Yale School of Medicine, New Haven, 06510, CT, USA.
The cis-regulatory elements encoded in an mRNA determine its stability and translational output. While there has been a considerable effort to understand the factors driving mRNA stability, the regulatory frameworks governing translational control remain more elusive. We have developed a novel massively parallel reporter assay (MPRA) to measure mRNA translation, named Nascent Peptide Translating Ribosome Affinity Purification (NaP-TRAP).
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