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    1. Cell Biology
    2. Chromosomes and Gene Expression

    TBP/TFIID-dependent activation of MyoD target genes in skeletal muscle cells

    Barbora Malecova et al.
    Genetic and biochemical evidence shows that the basal transcription machinery of muscle cells invariably relies on TBP/TFIID because TBP2 is not expressed in muscle cells, and thus resolves a longstanding issue raised by previous conflicting data.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Digital signaling decouples activation probability and population heterogeneity

    Ryan A Kellogg et al.
    Digital NF-κB signaling achieves orthogonal control over the probability of activation (percentage of activated cells) and dynamic response heterogeneity in the population via the area and shape of the input profile.
    1. Structural Biology and Molecular Biophysics

    The ion selectivity filter is not an activation gate in TRPV1-3 channels

    Andrés Jara-Oseguera et al.
    The TRPV1, TRPV2 and TRPV3 channels are gated on the cytosolic side of the pore, whereas structural changes in the ion selectivity filter associated with activation don't control cation access.
    1. Developmental Biology
    2. Genetics and Genomics

    Zygotic gene activation in the chicken occurs in two waves, the first involving only maternally derived genes

    Young Sun Hwang et al.
    In Aves, the first wave of transcription is derived exclusively from the maternal genome.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism of activation-triggered subunit exchange in Ca2+/calmodulin-dependent protein kinase II

    Moitrayee Bhattacharyya et al.
    Closed-ring and open-spiral assembly of the multi-subunit neuronal kinase CaMKII suggest a mechanism for how active subunits shuttle between individual assemblies, propagating stimulatory signals.
    1. Microbiology and Infectious Disease

    Post-acute COVID-19 associated with evidence of bystander T-cell activation and a recurring antibiotic-resistant bacterial pneumonia

    Michaela Gregorova et al.
    Post-acute or long-COVID is associated with bystander T-cell activation and a recurring antimicrobial resistant, bacterial ventilator-associated pneumonia.
    1. Immunology and Inflammation

    Conformational change within the extracellular domain of B cell receptor in B cell activation upon antigen binding

    Zhixun Shen et al.
    Conformational changes occur within extracellular domain of BCR upon antigen engagement, and these conformational changes are related with the strength of BCR activation and are distinct in IgM- and IgG-BCR.
    1. Developmental Biology
    2. Plant Biology

    Integration of light and metabolic signals for stem cell activation at the shoot apical meristem

    Anne Pfeiffer et al.
    TOR kinase guides the transition of plant stem cells from the dormant embryonic state to the active adult state by integrating light and metabolic signals.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Common activation mechanism of class A GPCRs

    Qingtong Zhou et al.
    Contrary to previous findings, class A GPCRs share a common activation pathway that directly links ligand binding to G-protein activation, as revealed by novel quantitative analysis.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Quality control in oocytes by p63 is based on a spring-loaded activation mechanism on the molecular and cellular level

    Daniel Coutandin et al.
    p63 uses an intricate network of domain-domain interactions to control its function in long-term quality maintenance of resting oocytes.