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    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Live-cell mapping of organelle-associated RNAs via proximity biotinylation combined with protein-RNA crosslinking

    Pornchai Kaewsapsak et al.
    Live-cell nanometer-resolution RNA labeling method enables transcriptome-wide mapping of endogenous RNAs in nuclear, cytosol, ER, and mitochondrial subcompartments.
    1. Neuroscience

    Pedunculopontine glutamatergic neurons control spike patterning in substantia nigra dopaminergic neurons

    Daniel J Galtieri et al.
    Pedunculopontine neurons can evoke burst spiking in substantia nigra dopaminergic neurons without engaging a subtype of glutamate receptor previously thought to be necessary for this spiking mode.
    1. Cell Biology
    2. Developmental Biology

    Proteolytic processing of palmitoylated Hedgehog peptides specifies the 3-4 intervein region of the Drosophila wing

    Sabine Schürmann et al.
    Proteolysis of lipidated N-terminal peptides that tether Hedgehog morphogens to the surface of source cells is absolutely required for their coupled release and bioactivation in vivo in Drosophila melanogaster.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Incomplete inhibition of HIV infection results in more HIV infected lymph node cells by reducing cell death

    Laurelle Jackson et al.
    Under conditions where the force of HIV infection per cell is high, partial attenuation of infection with inhibitors can increase the number of live infected cells and may paradoxically be beneficial for viral spread.
    1. Cell Biology

    An adaptation of astronomical image processing enables characterization and functional 3D mapping of individual sites of excitation-contraction coupling in rat cardiac muscle

    Qinghai Tian et al.
    The fusion of astronomy and cellular cardiology reveals the 3D arrangement and the firing reliability of active excitation-contraction coupling sites in beating cardiac myocytes.
    1. Cell Biology
    2. Human Biology and Medicine

    Defective STIM-mediated store operated Ca2+ entry in hepatocytes leads to metabolic dysfunction in obesity

    Ana Paula Arruda et al.
    Store operated calcium entry is defective in hepatocytes of obese mice, and restoring this process is sufficient to improve glucose metabolism.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Initial elevations in glutamate and dopamine neurotransmission decline with age, as does exploratory behavior, in LRRK2 G2019S knock-in mice

    Mattia Volta et al.
    LRRK2 G2019S knock-in mice are a genetically faithful model that recapitulates the slow disease progression of familial PD, with initial alterations to behaviour and neurotransmission providing early pathophysiological targets for neuroprotective interventions.
    1. Chromosomes and Gene Expression

    Transcription factor clusters regulate genes in eukaryotic cells

    Adam JM Wollman et al.
    Transcription factors form clusters independently of the presence of DNA, which regulate target genes as opposed to individual monomers, addressing a longstanding question of how transcription factors can find gene targets so quickly.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Investigating molecular crowding within nuclear pores using polarization-PALM

    Guo Fu et al.
    The super-resolution fluorescence microscopy approach polarization PALM (p-PALM) reveals that macromolecular crowding and inhomogeneity within nuclear pores generate a structurally and dynamically complex permeability barrier.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    A novel region in the CaV2.1 α1 subunit C-terminus regulates fast synaptic vesicle fusion and vesicle docking at the mammalian presynaptic active zone

    Matthias Lübbert et al.
    A novel region in the CaV2.1 α1 subunit regulates coupling of synaptic vesicles to CaV2.1 calcium channels, synaptic vesicle release and docking, and the size of the fast and total releasable pools of synaptic vesicles.