176 results found
    1. Chromosomes and Gene Expression

    Noncoding RNA-nucleated heterochromatin spreading is intrinsically labile and requires accessory elements for epigenetic stability

    R A Greenstein et al.
    Heterochromatin spreading in fission yeast predominantly produces intergenerationally unstable outcomes, requiring an accessory element that represses histone turnover.
    1. Neuroscience

    UBE3A-mediated p18/LAMTOR1 ubiquitination and degradation regulate mTORC1 activity and synaptic plasticity

    Jiandong Sun et al.
    A new mechanism linking lysosomes to mTOR regulation and synaptic plasticity involves p18 ubiquitination by Ube3a, and underlies some of the pathology observed in Angelman syndrome.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Lateral interactions between protofilaments of the bacterial tubulin homolog FtsZ are essential for cell division

    Fenghui Guan et al.
    Structural and functional approaches unambiguously revealed physiologically relevant lateral interactions between FtsZ protofilaments.
    1. Cell Biology
    2. Human Biology and Medicine

    BHLHE40, a third transcription factor required for insulin induction of SREBP-1c mRNA in rodent liver

    Jing Tian et al.
    Biochemical and genetic studies reveal a third transcription factor, BHLHE40, that together with LXR and C/EBPβ mediates insulin induction of SREBP-1c, which in turn leads to triglyceride accumulation in liver.
    1. Neuroscience

    Rem2 stabilizes intrinsic excitability and spontaneous firing in visual circuits

    Anna R Moore et al.
    In vivo and ex vivo analysis of the activity-regulated gene Rem2 in the mouse visual system sheds new light on the contribution of intrinsic excitability in circuit plasticity.
    1. Structural Biology and Molecular Biophysics

    Structure-based analysis of CysZ-mediated cellular uptake of sulfate

    Zahra Assur Sanghai et al.
    Structures of CysZ show a antiparallel membrane protein with an unanticipated fold and together with functional characterization provide insight into a bacterial sulfate translocating system.
    1. Structural Biology and Molecular Biophysics

    Multivalency regulates activity in an intrinsically disordered transcription factor

    Sarah Clark et al.
    Binding of multiple LC8 copies to the intrinsically disordered region of the transcription factor ASCIZ exemplifies a new and potentially widespread molecular mechanism for negative feedback regulation.
    1. Microbiology and Infectious Disease

    Septal secretion of protein A in Staphylococcus aureus requires SecA and lipoteichoic acid synthesis

    Wenqi Yu et al.
    Surface protein precursors traffic to lipoteichoic acid-rich septal membranes of Staphylococcus aureus for cleavage of their YSIRK-GXXS motif signal peptides and SecA-mediated translocation across the plasma membrane.
    1. Cell Biology

    The yeast H+-ATPase Pma1 promotes Rag/Gtr-dependent TORC1 activation in response to H+-coupled nutrient uptake

    Elie Saliba et al.
    The H+ influx coupled to nutrient uptake and the plasma membrane H+-ATPase are central actors of the activation of target of rapamycin complex 1 (TORC1) in budding yeast Saccharomyces cerevisiae..
    1. Biochemistry and Chemical Biology

    Tandem riboswitches form a natural Boolean logic gate to control purine metabolism in bacteria

    Madeline E Sherlock et al.
    A riboswitch class has been discovered for phosphoribosyl pyrophosphate, the biochemical precursor of nucleotides, and this novel RNA sensor commonly operates in tandem with a guanine aptamer to function like a Boolean logic gate.

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