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    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Cell Biology
    2. Immunology and Inflammation

    Signal transducer and activator of transcription 5 (STAT5) paralog dose governs T cell effector and regulatory functions

    Alejandro Villarino et al.
    Asymmetrical expression dictates functional dominance of one STAT5 paralog at cellular and tissue levels despite redundancy at molecular and genomic levels.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Affinity and dose of TCR engagement yield proportional enhancer and gene activity in CD4+ T cells

    Karmel A Allison et al.
    Pre-existing enhancers interpret T cell signaling strength in an analogue manner to direct quantitative changes in gene expression within the context of an overall digital response.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Dpp dependent Hematopoietic stem cells give rise to Hh dependent blood progenitors in larval lymph gland of Drosophila

    Nidhi Sharma Dey et al.
    Identification of Hematopoietic stem cells (HSCs) in the genetically amenable organism Drosophila melanogaster paves the path to address HSC biology, both in normal and pathophysiological conditions.
    1. Chromosomes and Gene Expression

    Chromosome-wide mechanisms to decouple gene expression from gene dose during sex-chromosome evolution

    Bayly S Wheeler et al.
    A chromosome-wide mechanism balances X-linked gene expression between the sexes in C. elegans, but no similar chromosome-wide mechanism balances gene expression between X chromosomes and autosomes.
    1. Physics of Living Systems

    Munc18-1-regulated stage-wise SNARE assembly underlying synaptic exocytosis

    Lu Ma et al.
    The Munc18-1 protein promotes formation of the t-SNARE complex and the half-zippered SNARE complex, two rate-limiting steps of SNARE assembly, to enhance membrane fusion.
    1. Cell Biology

    Muscle-specific stress fibers give rise to sarcomeres in cardiomyocytes

    Aidan M Fenix et al.
    Sarcomeres in heart muscle cells come from stress fiber-like structures that are mechanistically distinct from stress fibers in non-muscle cells.
    1. Neuroscience

    Shank is a dose-dependent regulator of Cav1 calcium current and CREB target expression

    Edward Pym et al.
    Changes in Shank gene dosage alter voltage-activated calcium current and calcium-activated gene expression in a manner that parallels the effects of human Shank copy number variation on psychiatric disease risk.
    1. Genetics and Genomics

    The rise and fall of the Phytophthora infestans lineage that triggered the Irish potato famine

    Kentaro Yoshida et al.
    The strain of Phytophthora infestans that caused the Great Famine in the late 1840s was caused by a single genotype that is distinct from, but closely related to, the most prevalent modern genotype.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Specificity in endoplasmic reticulum-stress signaling in yeast entails a step-wise engagement of HAC1 mRNA to clusters of the stress sensor Ire1

    Eelco van Anken et al.
    Selective docking of HAC1 mRNA on Ire1 clusters at a site separate from the Ire1 RNase domain is key for endoplasmic reticulum stress signaling.