22 results found
  1. June 2013

    Episode 1: June 2013

    In the first eLife podcast we hear about the origins of multicellularity, the Irish potato famine, hepatitis viruses, how fog affects the behaviour of car drivers, and the evolution of chromatin.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Relief of autoinhibition by conformational switch explains enzyme activation by a catalytically dead paralog

    Oleg A Volkov et al.
    A catalytically dead paralog activates its cognate enzyme through an allosteric mechanism that combined structural and phylogenomic analysis indicates arose through acquisition of a dimerization domain, suggesting a general model for how complex allostery evolves.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism of activation-triggered subunit exchange in Ca2+/calmodulin-dependent protein kinase II

    Moitrayee Bhattacharyya et al.
    Closed-ring and open-spiral assembly of the multi-subunit neuronal kinase CaMKII suggest a mechanism for how active subunits shuttle between individual assemblies, propagating stimulatory signals.
    1. Developmental Biology
    2. Evolutionary Biology

    Complex transcriptional regulation and independent evolution of fungal-like traits in a relative of animals

    Alex de Mendoza et al.
    Functional genomics reveal complex genome regulation during the coenocytic development of the ichthyosporean Creolimax fragrantissima, a protist closely related to animals.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    CatSperζ regulates the structural continuity of sperm Ca2+ signaling domains and is required for normal fertility

    Jean-Ju Chung et al.
    A new component, CatSper zeta, is required for continuous alignment of the calcium channel along the sperm's tail and is crucial for normal sperm swimming behavior and fertility.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Predicted glycosyltransferases promote development and prevent spurious cell clumping in the choanoflagellate S. rosetta

    Laura A Wetzel et al.
    A genetic screen reveals that two predicted glycosyltransferases promote rosette development and prevent cell clumping in one of the closest living relatives of animals, the choanoflagellate S. rosetta.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Dynamics of genomic innovation in the unicellular ancestry of animals

    Xavier Grau-Bové et al.
    The foundations of genomic complexity in multicellular animals have deep roots in their unicellular prehistory, both in terms of innovations in gene content, as well as the evolutionary dynamics of genome architecture.
    1. Developmental Biology
    2. Evolutionary Biology

    Collagen IV and basement membrane at the evolutionary dawn of metazoan tissues

    Aaron L Fidler et al.
    Collagen IV is a primordial extracellular matrix component associated with the transition to animal multicellularity, and enabled the formation and evolution of epithelial tissues.
    1. Structural Biology and Molecular Biophysics

    Deconstruction of the Ras switching cycle through saturation mutagenesis

    Pradeep Bandaru et al.
    Sequence conservation in Ras depends strongly on the biochemical network in which it operates, providing a framework for understanding the origin of global selection pressures on proteins.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    ketu mutant mice uncover an essential meiotic function for the ancient RNA helicase YTHDC2

    Devanshi Jain et al.
    The mouse gene Ythdc2 exemplifies an evolutionarily ancient family of crucial regulators of the transition from germline stem cell divisions to meiosis.

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