379 results found
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    The splicing regulator PTBP1 controls the activity of the transcription factor Pbx1 during neuronal differentiation

    Anthony J Linares, Chia-Ho Lin ... Douglas L Black
    The RNA binding protein PTBP1 controls an extensive program of alternative splicing in embryonic stem cells, one function of which is to repress neuronal transcriptional programs.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Selective sorting of microRNAs into exosomes by phase-separated YBX1 condensates

    Xiao-Man Liu, Liang Ma, Randy Schekman
    Condensation of cytosolic protein YBX1 into processing bodies reveals mechanisms for efficient and selective sorting of proteins and their cognate microRNAs into exosomes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural and dynamic changes in P-Rex1 upon activation by PIP3 and inhibition by IP4

    Sandeep K Ravala, Sendi Rafael Adame-Garcia ... John JG Tesmer
    P-Rex1 adopts an inactive, compact conformation that is stabilized by an abundant intracellular molecule and undergoes dynamic changes to extend upon encountering signaling phospholipids in membranes.
    1. Developmental Biology

    An essential role for maternal control of Nodal signaling

    Pooja Kumari, Patrick C Gilligan ... Karuna Sampath
    Regulation of conserved Nodal factors by a maternal protein ensures that Nodal signaling is repressed until the appropriate time in embryonic development.
    1. Neuroscience

    Laser ablation of Dbx1 neurons in the pre-Bötzinger complex stops inspiratory rhythm and impairs output in neonatal mice

    Xueying Wang, John A Hayes ... Christopher A Del Negro
    Laser-ablating neurons of a single genetic class reveals that Dbx1-derived interneurons comprise core respiratory rhythmogenic and premotor circuits and provides quantitative cellular parameters that govern network functionality
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Y-box protein 1 is required to sort microRNAs into exosomes in cells and in a cell-free reaction

    Matthew J Shurtleff, Morayma M Temoche-Diaz ... Randy Schekman
    A cell-free reaction that reconstitutes the selective sorting of a miRNA into exosomes reveals an RNA-binding protein, YBX1, as a critical sorting factor.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Targeting RNA:protein interactions with an integrative approach leads to the identification of potent YBX1 inhibitors

    Krystel El Hage, Nicolas Babault ... David Pastré
    The development of an integrative computational-experimental approach for identifying small molecules that can disrupt RNA:protein interactions in vitro and in cells led to the identification of several inhibitors of YBX1 in the micromolar range, including a previously approved drug.
    1. Neuroscience

    Dbx1 precursor cells are a source of inspiratory XII premotoneurons

    Ann L Revill, Nikolas C Vann ... Gregory D Funk
    Building on previous work (Wang et al., 2014), we use a combination of genetic, electrophysiology and laser ablation approaches to identify a developmentally defined population of neurons that are a significant source of clinically relevant inspiratory drive to XII motoneurons.
    1. Neuroscience

    Atoh1-dependent rhombic lip neurons are required for temporal delay between independent respiratory oscillators in embryonic mice

    Srinivasan Tupal, Wei-Hsiang Huang ... Paul A Gray
    The rhythmic patterns of activity that underlie breathing are generated and coordinated by distinct populations of neurons within the brainstem.
    1. Cell Biology

    Multiple cullin-associated E3 ligases regulate cyclin D1 protein stability

    Ke Lu, Ming Zhang ... Di Chen
    Cyclin D1 protein stability is regulated by ubiquitin-proteasome mechanism mediated by multiple E3 ligases, including newly identified Keap1, DDB2, and WSB2.

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