64 results found
    1. Plant Biology

    Testing the Münch hypothesis of long distance phloem transport in plants

    Michael Knoblauch et al.
    Measurements of physiological and geometrical parameters of the sieve tube system in Ipomoea nil provide strong support for pressure driven mass flow.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Drivers and sites of diversity in the DNA adenine methylomes of 93 Mycobacterium tuberculosis complex clinical isolates

    Samuel J Modlin et al.
    Fully assembled DNA methylomes from phylogeographically diverse clinical Mycobacterium tuberculosis complex isolates reveals 'intercellular mosaic methylation' as a source of epigenetic diversity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A molecular tweezer antagonizes seminal amyloids and HIV infection

    Edina Lump et al.
    CLR01 is a small molecule that could be an effective topical microbicide to eliminate HIV (and other enveloped viruses), and to antagonize host-encoded amyloid fibrils that promote HIV infection.
    1. Structural Biology and Molecular Biophysics

    Semen amyloids participate in spermatozoa selection and clearance

    Nadia R Roan et al.
    Ex vivo characterization of the interaction of human sperm with semen factors reveals that semen amyloids, previously discovered due to their ability to enhance HIV infection, serve a physiological function by promoting disposal of the defective sperm.
    1. Cell Biology

    Negative regulation of autophagy by UBA6-BIRC6–mediated ubiquitination of LC3

    Rui Jia, Juan S Bonifacino
    An ensemble of the ubiquitin-activating enzyme UBA6 and ubiquitin-conjugating enzyme/ubiquitin-ligase BIRC6 mediates ubiquitination of LC3, targeting the latter for proteasomal degradation and thus attenuating autophagic degradation of cellular substrates.
    1. Cell Biology

    Endosomal Rab cycles regulate Parkin-mediated mitophagy

    Koji Yamano et al.
    Parkin ubiquitination of damaged mitochondria recruits the Rab GEF, RABGEF1, to regulate downstream Rab cycles and ATG9A recruitment to growing phagophores that are participating in mitophagy.
    1. Evolutionary Biology

    Plasticity and evolutionary convergence in the locomotor skeleton of Greater Antillean Anolis lizards

    Nathalie Feiner et al.
    A comparative and experimental research refutes the controversial hypothesis that plasticity played a major role in the convergent evolution of Anolis ecomorphs.
    1. Plant Biology

    Long Distance Transport: Under pressure

    Ulrich Z Hammes
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    1. Cancer Biology
    2. Evolutionary Biology

    Pervasive duplication of tumor suppressors in Afrotherians during the evolution of large bodies and reduced cancer risk

    Juan M Vazquez, Vincent J Lynch
    Duplication of tumor suppressor genes contributed to the evolution of large, long-lived elephants.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Recurrent loss of HMGCS2 shows that ketogenesis is not essential for the evolution of large mammalian brains

    David Jebb, Michael Hiller
    The evolutionary loss of the main enzyme required for ketone body biosynthesis suggests that alternative strategies to provide energy for large brains during fasting evolved repeatedly in mammals.

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