140 results found
    1. Chromosomes and Gene Expression

    Dimerisation of the PICTS complex via LC8/Cut-up drives co-transcriptional transposon silencing in Drosophila

    Evelyn L Eastwood et al.
    Heterochromatin formation at transposon loci depends on dimerisation of the effector complex that elicits co-transcriptional silencing and this requirement is fulfilled by co-option of the conserved dimerisation hub protein, Cut-up/LC8.
    1. Physics of Living Systems

    Ezrin enrichment on curved membranes requires a specific conformation or interaction with a curvature-sensitive partner

    Feng-Ching Tsai et al.
    Ezrin, an important actin-membrane linker, can zip adjacent membranes, be enriched to positively-curved membranes when phosphorylated and to negatively-curved membranes through a direct interaction with membrane curvature sensor I-BAR domain proteins.
    1. Cancer Biology
    2. Computational and Systems Biology

    5-hydroxymethylcytosine marks regions with reduced mutation frequency in human DNA

    Marketa Tomkova et al.
    Different types of epigenetic DNA modifications affect the likelihood of cytosine mutations in cancer.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Requirements for RNA polymerase II preinitiation complex formation in vivo

    Natalia Petrenko et al.
    The requirements for preinitiation complex formation/stability and transcription by RNA polymerase II in yeast cells are different from those in vitro, thereby altering the current view of basal transcription.
    1. Genetics and Genomics

    Reprogramming of translation in yeast cells impaired for ribosome recycling favors short, efficiently translated mRNAs

    Swati Gaikwad et al.
    A mutant impaired for ribosome recycling exhibits translational reprogramming wherein strong mRNAs outcompete weak mRNAs, also observed when preinitiation complexes are diminished by eIF2α phosphorylation or 40S ribosomal subunit depletion.
    1. Chromosomes and Gene Expression

    piRNA-guided co-transcriptional silencing coopts nuclear export factors

    Martin H Fabry et al.
    A member of the Drosophila Nuclear Export Factor (Nxf) family, Nxf2, forms part of the piRNA-dependent co-transcriptional silencing complex and is essential for transposon repression in fly ovaries.
    1. Genetics and Genomics

    Identification of an emphysema-associated genetic variant near TGFB2 with regulatory effects in lung fibroblasts

    Margaret M Parker et al.
    A functional genetic variant, rs1690789, affects susceptibility to emphysema by altering TGFB2 expression in human lung fibroblasts.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Role of the pre-initiation complex in Mediator recruitment and dynamics

    Elisabeth R Knoll et al.
    Genome-wide recruitment of Mediator and Pol II is reduced in yeast lacking the Med2-Med3-Med15 tail module triad, and Mediator association with gene promoters depends on Pol II, Taf1, and TBP.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Basis of specificity for a conserved and promiscuous chromatin remodeling protein

    Drake A Donovan et al.
    The identification of a novel mechanism of chromatin remodeling, including a conserved remodeler domain and regulatory epitopes, provides targets for the design of therapeutics to modulate transcriptional regulation in cells.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Yeast Ded1 promotes 48S translation pre-initiation complex assembly in an mRNA-specific and eIF4F-dependent manner

    Neha Gupta et al.
    Yeast RNA helicase Ded1 stimulates ribosome recruitment of structure-laden native mRNAs in a reconstituted system by interactions between domains in Ded1 and initiation factor eIF4G that stabilizes a Ded1-eIF4F complex.

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