249 results found
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    The splicing regulator PTBP1 controls the activity of the transcription factor Pbx1 during neuronal differentiation

    Anthony J Linares et al.
    The RNA binding protein PTBP1 controls an extensive program of alternative splicing in embryonic stem cells, one function of which is to repress neuronal transcriptional programs.
    1. Structural Biology and Molecular Biophysics

    Allosteric signalling in the outer membrane translocation domain of PapC usher

    Irene Farabella et al.
    Input from computational models has enabled the detection of allosteric communication that modulates the gating mechanism of a bacterial outer-membrane protein.
    1. Biochemistry and Chemical Biology

    HPF1 and nucleosomes mediate a dramatic switch in activity of PARP1 from polymerase to hydrolase

    Johannes Rudolph et al.
    The polymerase activity of PARP1 is converted to hydrolase activity upon binding of Histone Parylation Factor 1 (HPF1) with nucleosome activators.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    Poly(A) tail length regulates PABPC1 expression to tune translation in the heart

    Sandip Chorghade et al.
    A poly(A) tail-based regulatory mechanism dynamically controls PABPC1 protein synthesis in cardiomyocytes and thereby titrates cellular translation in response to developmental and hypertrophic cues.
    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

    The molecular basis of coupling between poly(A)-tail length and translational efficiency

    Kehui Xiang, David P Bartel
    For poly(A)-tail length to influence mRNA translational efficiency, poly(A)-binding protein (PABPC) must be limiting, mRNAs lacking PABPC must be stable, and translation initiation must be sensitive to PABPC levels.
    1. Cancer Biology
    2. Cell Biology

    PARP1 inhibitors trigger innate immunity via PARP1 trapping-induced DNA damage response

    Chiho Kim et al.
    Identification of PARP1 trapping as the major contributor of PARP1 inhibitor-induced innate immune response.
    1. Chromosomes and Gene Expression
    2. Immunology and Inflammation

    Polypyrimidine tract-binding proteins are essential for B cell development

    Elisa Monzón-Casanova et al.
    The RNA-binding protein polypyrimidine tract-binding protein 1 (PTBP1) is essential for B cell development at the pro-B cell stage where it suppresses S-phase entry and promotes progression through mitosis.
    1. Biochemistry and Chemical Biology

    Poly(ADP-ribose) polymerase 1 searches DNA via a ‘monkey bar’ mechanism

    Johannes Rudolph et al.
    By moving between DNA segments like a child swinging on monkey bars, poly(ADP-ribose) polymerase 1 explores possible DNA damage sites more effectively.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Cap-proximal nucleotides via differential eIF4E binding and alternative promoter usage mediate translational response to energy stress

    Ana Tamarkin-Ben-Harush et al.
    Differential eIF4E binding to transcription initiation nucleotides and alternative promoter usage of eIF1A, PABP and other genes are involved in the response of the translation machinery to energy stress.

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