321 results found
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Elba, a novel developmentally regulated chromatin boundary factor is a hetero-tripartite DNA binding complex

    Tsutomu Aoki et al.
    A chromatin boundary factor that is only active during early embryo development has been discovered in Drosophila.
    1. Neuroscience

    The activity-dependent histone variant H2BE modulates the life span of olfactory neurons

    Stephen W Santoro, Catherine Dulac
    A genome-organizing protein that is present only in the olfactory system of mice has been found to orchestrate changes in the relative numbers of different odor-sensing neurons on the basis of how active these neurons are.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Cdc48/p97 promotes degradation of aberrant nascent polypeptides bound to the ribosome

    Rati Verma et al.
    The enzyme that collaborates with ubiquitin ligases to promote the release of defective polypeptides from stalled ribosomes in a process named ribosome-associated degradations has been identified as the ATPase Cdc48.
    1. Physics of Living Systems

    Sequence-dependent base pair stepping dynamics in XPD helicase unwinding

    Zhi Qi et al.
    The ability of an enzyme called XPD helicase to unwind the double helix is influenced by the DNA sequence and the availability of energy.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sterol homeostasis requires regulated degradation of squalene monooxygenase by the ubiquitin ligase Doa10/Teb4

    Ombretta Foresti et al.
    Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.
    1. Stem Cells and Regenerative Medicine

    Physiological and stem cell compartmentalization within the Drosophila midgut

    Alexis Marianes, Allan C Spradling
    The intestine contains distinct subregions specialized for digestion along its anterior-posterior axis, and the stem cells that constantly renew these subregions are not interchangeable.
    1. Stem Cells and Regenerative Medicine

    Brahma is essential for Drosophila intestinal stem cell proliferation and regulated by Hippo signaling

    Yunyun Jin et al.
    The Brahma chromatin remodelling complex interacts with the Hippo signalling pathway to regulate the proliferation and differentiation of stem cells in the Drosophila midgut.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation

    Yashar Sadian et al.
    Imaging with electron microscopy and cryo-electron tomography reveals that competition between Cdc42 and Gic1 for the same subunit within septins controls the formation and breakdown of septin filaments.
    1. Neuroscience

    Charcot-Marie-Tooth 2B mutations in rab7 cause dosage-dependent neurodegeneration due to partial loss of function

    Smita Cherry et al.
    Mutations that reduce the functioning of rab7 may underlie the degeneration of sensory and motor nerves in Charcot-Marie-Tooth 2B disease, which suggests increasing endolysosomal function as a therapy.
    1. Microbiology and Infectious Disease

    A serine sensor for multicellularity in a bacterium

    Arvind R Subramaniam et al.
    Biofilm formation by Bacillus subtilis relies on a sensing mechanism for the amino acid serine that does not depend on a dedicated protein or RNA.

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