373 results found
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    A novel SH2 recognition mechanism recruits Spt6 to the doubly phosphorylated RNA polymerase II linker at sites of transcription

    Matthew A Sdano et al.
    The tandem SH2 domains of Spt6 use novel mechanisms to bind unexpected phosphorylated serine and threonine residues in the RNA polymerase II linker to recruit Spt6 to sites of transcription and maintain repressive chromatin.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Robust model-based analysis of single-particle tracking experiments with Spot-On

    Anders S Hansen et al.
    Spot-On is an easy-to-use website that makes a rigorous and bias-corrected modeling framework for analysis of single-molecule tracking experiments available to all.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Evidence for DNA-mediated nuclear compartmentalization distinct from phase separation

    David Trombley McSwiggen et al.
    Transient DNA interactions by DNA-binding proteins are utilized by herpes simple virus as an alternative route to generate membraneless compartments in the nucleus without invoking phase separation.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    High-throughput, single-particle tracking reveals nested membrane domains that dictate KRasG12D diffusion and trafficking

    Yerim Lee et al.
    The nanoscopic landscape of the membrane has a direct impact on the spatiotemporal, and likely also the signaling, dynamics of Ras proteins.
    1. Biochemistry and Chemical Biology

    Specific lid-base contacts in the 26s proteasome control the conformational switching required for substrate degradation

    Eric R Greene et al.
    The 26S proteasome lid subcomplex acts as an external scaffold whose interactions with the ATPase motor stabilize the substrate-engagement-competent state, and control conformational changes upon engagement for subsequent degradation steps.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The universally-conserved transcription factor RfaH is recruited to a hairpin structure of the non-template DNA strand

    Philipp K Zuber et al.
    Transcription factors can read out both the sequence and the structure of the non-template DNA strand in the transcription bubble, expanding the repertoire of mechanisms to control transcription.
    1. Neuroscience

    Synapse-specific and compartmentalized expression of presynaptic homeostatic potentiation

    Xiling Li et al.
    Genetic and electrophysiological analyses reveal that the mechanisms orchestrating the induction and expression of homeostatic plasticity are compartmentalized and operate with exquisite specificity on both sides of the synapse.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    FACT and Ubp10 collaborate to modulate H2B deubiquitination and nucleosome dynamics

    Melesse Nune et al.
    The histone chaperone FACT and the deubiquitinating enzyme Ubp10 act in concert to remove ubiquitin from histone H2B in nucleosomes, and likely coordinate nucleosome assembly during DNA replication and transcription.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Compensatory induction of MYC expression by sustained CDK9 inhibition via a BRD4-dependent mechanism

    Huasong Lu et al.
    A new potent and selective CDK9 inhibitor induces the expression of the proto-oncogene MYC via a mechanism that depends on the bromodomain protein BRD4.
    1. Stem Cells and Regenerative Medicine

    A mex3 homolog is required for differentiation during planarian stem cell lineage development

    Shu Jun Zhu et al.
    The planarian mex3-1 gene is required for non-stem cell fates and suppresses a stem cell fate in differentiating cells.

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