H3
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Related Articles from SNS
Molecular Basis of Histone H3 Reading and Writing by Legionella pneumophila SET Domain Lysine Methyltransferases
RomA and its highly conserved strain ortholog LegAS4 are SET and ankyrin domain-containing effector proteins of the intracellular bacterial pathogen Legionella pneumophila. These enzymes are secreted into host cells, where they translocate to the nucleus and methylate Lys14 in histone H3 (H3K14), a novel post-translation modification (PTM) that reprograms gene expression and promotes bacterial replication. To elucidate their H3K14 substrate specificity, we determined the crystal structures...
Overexpression of Eaf1, a subunit of the NuA4 lysine acetyl transferase complex, rescues growth defects in the budding yeast H3K36M oncohistone model via histone H4 tail acetylation
Histone proteins are critical for regulating functions that occur at DNA, such as gene expression. Certain mutations in histone genes were characterized to drive oncogenesis, termed oncohistones, and one of the first identified oncohistones is H3K36M. While humans have a high copy number of H3 genes, making genetic engineering in cell lines challenging, budding yeast only have two H3 genes. Additionally, histone H3 shares 90% sequence identity between budding yeast and humans, making it a...
Genomic hallmarks of parasexual reproduction in three hybrid groups of the human pathogen Cryptococcus neoformans
Hybridization is a major driver of fungal evolution, yet knowledge of the molecular mechanisms underpinning hybridization and its genomic impact remain limited. Here, we analyse 197 Cryptococcus neoformans genomic sequences, including 13 newly sequenced strains, identifying three genetically clustered and distinct hybrid groups (H1, H2 and H3) each with unique parental origins and ecological associations. Using phylogenomics, population structure analyses, and long-read genome assemblies, we...
SIRT7 regulates dosage compensation and safeguards the female X chromosome
Abstract Sirtuins are deacetylases implicated in stress responses and longevity in mammals1,2. Although their differential impact on disease for the two sexes has been noted3,4,5,6,7, the underlying reasons are unclear. Here, using Sirt7 as a model in mice, we examine the mechanisms leading to sex differences and find that Sirt7−/− female mice have decreased fitness throughout their lifespan.
A prognostic human brain network for diffuse midline glioma
Abstract Diffuse midline gliomas (DMGs) are near-universally lethal tumours of the childhood central nervous system1,2. In animal models, DMGs form brain-wide integrated networks through neuron-to-glioma synapses3,4,5,6 and glioma-to-glioma gap junctional coupling3. This extensive connectivity robustly promotes the growth and invasion of DMG3,4,5,6,7,8,9 and other glial malignancies10,11,12 through paracrine mechanisms and direct neuron-to-glioma synapses.
Breeding pig transport drives the dispersal of swine influenza A virus across Europe
Pigs serve as reservoirs of former human influenza A virus (IAV) H1N1 and H3N2 lineages and act as mixing vessels for diverse strains, facilitating the emergence of novel IAVs. Understanding the spread and evolution of swine IAVs (swIAVs) is therefore crucial to assess the risk of strains with zoonotic potential emerging. This study uses a phylogeographic framework to investigate the predictors of swIAV dispersal across Europe.
UK's GSK to acquire U.S. drugmaker Nuvalent for $10.6 billion as pharma giants race to expand pipelines
U.K. pharmaceutical group GSK has entered an agreement to acquire U.S.-based drugmaker Nuvalent for $10.6 billion to bolster its lung cancer pipeline, in what would be the British drugmaker's largest acquisition in more than a decade. The all-cash deal values Nuvalent at about $124 per share, according to a GSK filing on Tuesday, representing a 40% premium to its last closing price. The Financial Times had reported the transaction earlier on Tuesday.
Integrated multi-omics reveals adaptive anti-oxidant remodeling in early alcohol-associated liver disease
Alcohol-associated liver disease (ALD) is a leading cause of liver-related morbidity and mortality. Although various omics approaches have revealed early metabolic alterations, individual datasets provide limited mechanistic insight. Here, we integrated RNA sequencing with mass spectrometry-based analyses to quantify gene expression, protein abundance, proteome and acetylome dynamics, and metabolic fluxes in livers of alcohol-fed mice.