26 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. 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. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Therapeutic genetic variation revealed in diverse Hsp104 homologs

    Zachary M March et al.
    Exploring natural Hsp104 variation reveals unexpected tuning of a passive activity that inhibits aggregation of specific substrates to selectively counter TDP-43 or alpha-synuclein proteotoxicity connected to neurodegenerative disease.
    1. Evolutionary Biology
    2. Physics of Living Systems

    Hydrodynamics of sponge pumps and evolution of the sponge body plan

    Seyed Saeed Asadzadeh et al.
    The architecture of flagellated chambers in sponge pumps is linked to that of body plan, supporting the current view that the sponge aquiferous system evolved from an open-type filtration system.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Genomic innovation of ATD alleviates mistranslation associated with multicellularity in Animalia

    Santosh Kumar Kuncha et al.
    Identification of a two-tier functional redundancy to combat proteostasis imbalance induced due to tRNA expansion and oxidative stress in multicellular animals.
    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.

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