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  1. Episode 50: October 2018

    In this special episode, we discuss how tiny microbes in the gut – the microbiome – can have a huge impact on the lives of animals.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Temporal profiling of redox-dependent heterogeneity in single cells

    Meytal Radzinski et al.
    Analysis of aging yeast cells using the in-vivo roGFP2-based probe reveals redox-dependent heterogeneity, reflected in a bi-modal distribution of the oxidation status, differential growth and replication, as well as distinct proteomic and transcriptomic profiles.
    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

    Cell cycle entry triggers a switch between two modes of Cdc42 activation during yeast polarization

    Kristen Witte et al.
    Optogenetic control of Cdc42 activation during polarization of budding yeast demonstrates a cell cycle regulated switch between two distinct modes of positive feedback.
    1. Neuroscience

    Early intrinsic hyperexcitability does not contribute to motoneuron degeneration in amyotrophic lateral sclerosis

    Félix Leroy et al.
    Contrary to a long-standing hypothesis, the neuronal death that leads to muscle wastage in amyotrophic lateral sclerosis does not result from overactivity of those neurons during development.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Two-way communication between SecY and SecA suggests a Brownian ratchet mechanism for protein translocation

    William John Allen et al.
    Evidence is presented that supports a completely new, diffusion-driven mechanism for transporting proteins across membranes in bacteria.
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    Snf1/AMPK promotes the formation of Kog1/Raptor-bodies to increase the activation threshold of TORC1 in budding yeast

    James E Hughes Hallett et al.
    The key Target of Rapamycin Complex (TORC1) component Kog1 moves into bodies during glucose starvation to limit reactivation of the complex.
    1. Neuroscience

    The number of olfactory stimuli that humans can discriminate is still unknown

    Richard C Gerkin, Jason B Castro
    The recent claim that humans can discriminate more than one trillion odors is shown to be unwarranted.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Drought adaptation in Arabidopsis thaliana by extensive genetic loss-of-function

    J Grey Monroe et al.
    Gene knockouts provide valuable genetic fuel for climate adaptation in nature.
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    Protein biogenesis machinery is a driver of replicative aging in yeast

    Georges E Janssens et al.
    A comprehensive mapping of the proteome and transcriptome during the complete replicative lifespan of budding yeast predicted an increased abundance of the protein biogenesis machinery is most causal for aging.