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    1. Developmental Biology

    A lncRNA fine tunes the dynamics of a cell state transition involving Lin28, let-7 and de novo DNA methylation

    Meng Amy Li et al.
    A novel lncRNA (Ephemeron) is connected to known post-transcriptional and epigenetic regulators as part of an integrated machinery, which controls the timely exit from the naïve state of mouse embryonic stem cells.
    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. Microbiology and Infectious Disease

    Structural basis of host recognition and biofilm formation by Salmonella Saf pili

    Longhui Zeng et al.
    SafDAA-SafDAA structure and functional characterizations reveal a pili-mediated inter-cellular oligomerization mechanism for bacterial aggregation and biofilm formation in Salmonella enterica.
    1. Neuroscience

    Left-right side-specific endocrine signaling complements neural pathways to mediate acute asymmetric effects of brain injury

    Nikolay Lukoyanov et al.
    In addition to the well-established involvement of descending neural tracts, the left-right side-specific endocrine mechanism may contribute to signaling from injured brain to spinal motor circuits.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Conditional protein tagging methods reveal highly specific subcellular distribution of ion channels in motion-sensing neurons

    Sandra Fendl et al.
    New protein labeling strategies unravel the subcellular distribution of neurotransmitter receptor subunits and voltage-gated ion channels in motion-sensing T4/T5 neurons of the Drosophila visual system.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Mitochondrial copper and phosphate transporter specificity was defined early in the evolution of eukaryotes

    Xinyu Zhu et al.
    Ancient evolutionary signatures reveal mechanistic details of substrate specificity in copper-transporting mitochondria carrier family proteins.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    Tailored tetravalent antibodies potently and specifically activate Wnt/Frizzled pathways in cells, organoids and mice

    Yuyong Tao et al.
    Modular tetravalent antibodies can be engineered to stimulate signaling through any combination of Frizzled and LRP receptors to drive organoid growth and mobilize endogenous stem cells in vivo.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage

    Timothy J Wendorff, James M Berger
    The engagement of DNA crossings is shown to license ATP hydrolysis and DNA cleavage by topoisomerase VI, a finding with mechanistic ramifications for related GHKL ATPases and meiotic recombination machineries.
    1. Stem Cells and Regenerative Medicine

    Yap1 safeguards mouse embryonic stem cells from excessive apoptosis during differentiation

    Lucy LeBlanc et al.
    During ES cell differentiation, Yap1 directly regulates apoptosis-related genes like Bcl-2 and Mcl-1 to attenuate apoptosis and promote cell survival to allow for successful cell fate changes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Symmetry broken and rebroken during the ATP hydrolysis cycle of the mitochondrial Hsp90 TRAP1

    Daniel Elnatan et al.
    A flip of the dimer asymmetry following the first ATP hydrolysis provides a mechanistic model for client remodeling by the mitochondrial Hsp90, TRAP1.