3,355 results found
    1. Evolutionary Biology
    2. Plant Biology

    Independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

    Tobias Züst et al.
    A gain-of-function in a new chemical defense resulted in no trade-offs and and independent evolution between novel and ancestral defenses, suggesting low redundancy among different defensive chemicals.
    1. Microbiology and Infectious Disease

    Mechanisms of substrate recognition by a typhoid toxin secretion-associated muramidase

    Tobias Geiger et al.
    Biochemical analyses and the crystal structure of TtsA reveal fundamental insight into the mechanisms by which this muramidase recognizes its peptidoglycan substrate to facilitate typhoid toxin secretion.
    1. Neuroscience

    A double-sided microscope to realize whole-ganglion imaging of membrane potential in the medicinal leech

    Yusuke Tomina, Daniel A Wagenaar
    For the first time, action potentials and subthreshold postsynaptic potentials of almost all individual identifiable neurons within a functional unit of the leech nervous system were simultaneously imaged during sensory processing and behavioral generation.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Abundant toxin-related genes in the genomes of beneficial symbionts from deep-sea hydrothermal vent mussels

    Lizbeth Sayavedra et al.
    Beneficial symbiotic bacteria encode an exceptional number of toxin-related genes that are all expressed by the symbionts in the host, supporting their key role in host-microbe interactions.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structures of diverse poxin cGAMP nucleases reveal a widespread role for cGAS-STING evasion in host–pathogen conflict

    James B Eaglesham et al.
    Poxin enzymes are a diverse family of insect and viral 2′3′-cGAMP nucleases, which evolved from self-cleaving RNA virus accessory proteases.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A genetic selection reveals functional metastable structures embedded in a toxin-encoding mRNA

    Sara Masachis et al.
    A genetic selection of toxicity suppressors coupled to high-throughput sequencing has captured metastable RNA structures that co-transcriptionally inhibit the translation of a bacterial toxin.
    1. Cell Biology
    2. Developmental Biology

    A tunable refractive index matching medium for live imaging cells, tissues and model organisms

    Tobias Boothe et al.
    Iodixanol supplementation provides a simple method for tuning the refractive index of live imaging media, which can greatly improve resolution and penetration depth in live imaging experiments.
    1. Structural Biology and Molecular Biophysics

    Designed α-sheet peptides inhibit amyloid formation by targeting toxic oligomers

    Gene Hopping et al.
    Novel designed alpha-sheet peptides inhibit amyloidosis in two different systems and preferentially bind the toxic oligomer.
    1. Neuroscience

    Structural rearrangement of amyloid-β upon inhibitor binding suppresses formation of Alzheimer’s disease related oligomers

    Tobias Lieblein et al.
    Monitoring the formation of two distinct arrangements in early amyloid-ß aggregation by mass spectrometry and ion mobility allows determination of the effect of potential drug candidates.
    1. Microbiology and Infectious Disease

    Infectious polymorphic toxins delivered by outer membrane exchange discriminate kin in myxobacteria

    Christopher N Vassallo et al.
    Serial cell-to-cell transfer of lipoprotein toxins by outer membrane exchange provides a potent platform for kin discrimination in Myxococcus xanthus.

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