2,918 results found
    1. Microbiology and Infectious Disease

    Genetic code expansion enables visualization of Salmonella type three secretion system components and secreted effectors

    Moirangthem Kiran Singh et al.
    Genetic code expansion (GCE) enables site-specific labeling and visualization of Salmonella secreted effectors, secretion system components and provides a viable alternative for labeling proteins that do not tolerate N- or C-terminal tags.
    1. Evolutionary Biology
    2. Physics of Living Systems

    Environmental heterogeneity can tip the population genetics of range expansions

    Matti Gralka, Oskar Hallatschek
    Environmental heterogeneity can dramatically reduce the efficacy of selection and alter the neutral evolutionary dynamics in microbial range expansions.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Polymerase θ is a robust terminal transferase that oscillates between three different mechanisms during end-joining

    Tatiana Kent et al.
    Polymerase θ is among the most proficient terminal transferases known and switches between three different mechanisms of terminal transferase activity.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Environment determines evolutionary trajectory in a constrained phenotypic space

    David T Fraebel et al.
    Experimental evolution shows that when selection acts on two traits constrained by a trade-off, the direction of phenotypic evolution depends on the environment.
    1. Developmental Biology
    2. Neuroscience

    Glial insulin regulates cooperative or antagonistic Golden goal/Flamingo interactions during photoreceptor axon guidance

    Hiroki Takechi et al.
    Timely regulation of growth cone dynamics, including filopodial and cytoskeletal rearrangements through phosphorylation signals from glial cells, shapes the photoreceptor axon targeting.
    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary expansion of apical extracellular matrix is required for the elongation of cells in a novel structure

    Sarah Jacquelyn Smith et al.
    A new morphological structure evolved through extreme changes in cell height requires novel connections to an extracellular matrix network, which predates the origin of structure.
    1. Genetics and Genomics
    2. Neuroscience

    Sex-determining genes distinctly regulate courtship capability and target preference via sexually dimorphic neurons

    Kenichi Ishii et al.
    Sex-specific characteristics of the fruit fly courtship behavior are not specified by a single binary switch, but as a combination of traits that are modularly specified by separable genetic switches.
    1. Genetics and Genomics
    2. Neuroscience

    Layered roles of fruitless isoforms in specification and function of male aggression-promoting neurons in Drosophila

    Margot Wohl et al.
    Male-type aggressive and courtship behaviors of the fruit flies are differentially specified by two sex-determining genes, providing a substrate for the evolution to sculpt these two behaviors independently.
    1. Developmental Biology

    Antagonistic regulation by insulin-like peptide and activin ensures the elaboration of appropriate dendritic field sizes of amacrine neurons

    Jiangnan Luo et al.
    Afferent-derived factors control the elaboration of appropriate and robust sizes of dendritic arbors by dynamically modulating dendritic growth parameters.

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