765 results found
    1. Computational and Systems Biology

    RNA polymerase errors cause splicing defects and can be regulated by differential expression of RNA polymerase subunits

    Lucas B Carey
    A single human cell makes 10-100 transcriptional errors per second; these errors affect splicing and may influence the evolution of coding sequences.
    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. Cancer Biology

    Transient rapamycin treatment can increase lifespan and healthspan in middle-aged mice

    Alessandro Bitto et al.
    Three months treatment with the drug rapamycin increases lifespan, alters cancer prevalence, remodels the microbiome, and improves functional measures of health in middle aged mice in a dose- and sex-dependent manner.
    1. Epidemiology and Global Health

    Large-scale whole genome sequencing of M. tuberculosis provides insights into transmission in a high prevalence area

    JA Guerra-Assunção et al.
    A study of tuberculosis cases in the Karonga district of Malawi reveals that the main lineages of M. tuberculosis differ in their transmission patterns and virulence.
    1. Chromosomes and Gene Expression

    The CDK-PLK1 axis targets the DNA damage checkpoint sensor protein RAD9 to promote cell proliferation and tolerance to genotoxic stress

    Takeshi Wakida et al.
    Minimizing anti-proliferation signaling from DNA damage detection machinery is the tactic for the cells to drive proliferation under genotoxic environment, and the function is exerted by Polo-Like-Kinase1 that is frequently over-expressed in cancer cells.
    1. Cell Biology
    2. Neuroscience

    Clarinet (CLA-1), a novel active zone protein required for synaptic vesicle clustering and release

    Zhao Xuan et al.
    Clarinet, a novel C. elegans active zone protein with homology to vertebrate Piccolo and Rim, uses its different isoforms for diverse functions, including synaptic vesicle clustering, vesicle release and synaptogenesis.
    1. Developmental Biology
    2. Evolutionary Biology

    The evolutionary origin of bilaterian smooth and striated myocytes

    Thibaut Brunet et al.
    Molecular profiling of annelid myocytes reveals that the last common protostome-deuterostome ancestor already possessed a dual musculature, with visceral smooth muscles ensuring digestion and somatic striated muscles ensuring locomotion.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    CarD uses a minor groove wedge mechanism to stabilize the RNA polymerase open promoter complex

    Brian Bae et al.
    The crystal structure of Thermus transcription activation complexes containing the transcriptional activator CarD reveals a new mechanism for the activation of transcription.
    1. Cell Biology
    2. Developmental Biology

    Extensive alternative splicing transitions during postnatal skeletal muscle development are required for calcium handling functions

    Amy E Brinegar et al.
    Global transcriptome changes, particularly alternative splicing, are highly dynamic the first 2 weeks after birth, and the example of calcineurin A splicing exemplifies the importance of alternative splicing during skeletal muscle development.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Time-resolved mapping of genetic interactions to model rewiring of signaling pathways

    Florian Heigwer et al.
    Genetic interaction analysis by combinatorial genetic perturbation and high-throughput imaging maps time- and context-dependent crosstalk between signaling pathways.

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