10,719 results found
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Simple biochemical features underlie transcriptional activation domain diversity and dynamic, fuzzy binding to Mediator

    Adrian L Sanborn et al.
    Transcriptional activation domains achieve rapid, dynamic, specific interaction with Mediator through binding of an unstructured peptide to multiple hydrophobic surfaces without particular amino acid side chain interactions.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Polypyrimidine tract binding protein 1 protects mRNAs from recognition by the nonsense-mediated mRNA decay pathway

    Zhiyun Ge et al.
    The RNA-binding protein PTBP1 is recruited to sites near stop codons in retroviral and human mRNAs, shielding them from detection and degradation by the nonsense-mediated mRNA decay pathway.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Quality control of transcription start site selection by nonsense-mediated-mRNA decay

    Christophe Malabat et al.
    RNA polymerase II generates numerous transcript isoforms, including transcripts initiating downstream of the START codon, that are efficiently degraded by the nonsense-mediated mRNA decay pathway.
    1. Genetics and Genomics

    PRD-2 directly regulates casein kinase I and counteracts nonsense-mediated decay in the Neurospora circadian clock

    Christina M Kelliher et al.
    Casein kinase I, a pivotal kinase in the circadian clock encoded by ck-1a, is positively regulated by a novel RNA-binding protein that protects ck-1a transcripts from nonsense-mediated decay.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    FBXL19 recruits CDK-Mediator to CpG islands of developmental genes priming them for activation during lineage commitment

    Emilia Dimitrova et al.
    The ZF-CxxC protein FBXL19 recruits kinase-associated Mediator to CpG islands of silent developmental genes in embryonic stem cells, which primes these genes for activation during differentiation and is required for embryonic development.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Repression by the Arabidopsis TOPLESS corepressor requires association with the core mediator complex

    Alexander R Leydon et al.
    The TPL corepressor binds to the core mediator complex through MED21 to inhibit transcription while simultaneously priming repressed genes for rapid reactivation.
    1. Chromosomes and Gene Expression

    Evidence that Mediator is essential for Pol II transcription, but is not a required component of the preinitiation complex in vivo

    Natalia Petrenko et al.
    Mediator, a transcriptional coactivator complex, is essential for transcription but is not a required component of a functional preinitiation complex, indicating that Mediator is not equivalent to a general transcription factor.
    1. Cell Biology

    Degradation of Gadd45 mRNA by nonsense-mediated decay is essential for viability

    Jonathan O Nelson et al.
    Excess expression of the Gadd45 mRNA accounts for lethality when nonsense-mediated decay is lost in Drosophila and mammalian cells, revealing that this pathway is a critical gene regulatory mechanism.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A putative ATPase mediates RNA transcription and capping in a dsRNA virus

    Xuekui Yu et al.
    Atomic structures suggest a novel mechanism for the regulation of mRNA transcription and capping in dsRNA viruses.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    MicroRNA-mediated repression of nonsense mRNAs

    Ya Zhao et al.
    microRNAs can serve as a surveillance system to repress nonsense mRNAs by recognizing miRNA-responsive elements in the open reading frame region downstream of the premature termination codon.

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