1,981 results found
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Retrocopying expands the functional repertoire of APOBEC3 antiviral proteins in primates

    Lei Yang et al.
    Genomes take advantage of the gene-duplicating ability of retroelements to birth novel innate immune defense genes.
    1. Chromosomes and Gene Expression

    Live-cell single particle imaging reveals the role of RNA polymerase II in histone H2A.Z eviction

    Anand Ranjan et al.
    Histone variant H2A.Z is deposited near transcription start sites by the chromatin remodeler SWR1 and seems to be removed by RNA polymerase II at an early stage of transcription elongation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Conformational distributions of isolated myosin motor domains encode their mechanochemical properties

    Justin R Porter et al.
    Shifts in the balance between nucleotide-favorable and nucleotide-unfavorable conformations of myosin motors encode duty ratios and ADP release rates, demonstrating the power of an ensemble perspective for uncovering sequence-function relationships.
    1. Neuroscience

    Hippocampal and cortical mechanisms at retrieval explain variability in episodic remembering in older adults

    Alexandra N Trelle et al.
    The strength of pattern completion during memory retrieval, indexed by hippocampal activity and cortical reinstatement, explains within- and across-individual variability in episodic memory in older adults.
    1. Neuroscience

    Principles of operation of a cerebellar learning circuit

    David J Herzfeld et al.
    Quantitative analysis of behavior coupled with computational modeling reveal the set of circuit-level principles that underlie cerebellar-dependent motor learning in smooth pursuit eye movements of monkeys across timescales.
    1. Structural Biology and Molecular Biophysics

    A CLC-ec1 mutant reveals global conformational change and suggests a unifying mechanism for the CLC Cl/H+ transport cycle

    Tanmay S Chavan et al.
    Crystallography together with electron-resonance spectroscopy, molecular-dynamics simulations, and transport measurements reveal the molecular details of protein conformational change, and how this change contributes to function in a CLC-type chloride/proton exchanger.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    IP3 mediated global Ca2+ signals arise through two temporally and spatially distinct modes of Ca2+ release

    Jeffrey T Lock, Ian Parker
    Cell-wide Ca2+ signals that regulate numerous cellular functions comprise dual Ca2+ release modes through IP3 receptors, punctate transients mediated by clustered receptors and spatiotemporally diffuse release through functionally distinct receptors.
    1. Cell Biology

    Cortical bone maturation in mice requires SOCS3 suppression of gp130/STAT3 signalling in osteocytes

    Emma C Walker et al.
    Targeted SOCS3 null mice reveal that maturation of cortical bone comprises both pore closure and accumulation of high density bone, requiring local suppression of gp130-STAT3 in osteocytes and subsequent osteoclastogenesis.
    1. Neuroscience

    Distinct spatiotemporal mechanisms underlie extra-classical receptive field modulation in macaque V1 microcircuits

    Christopher A Henry et al.
    The multiple component mechanisms of extra-classical receptive field modulation, with distinct dynamics, discovered in the monkey visual cortex have important implications for understanding contextual perceptual processing.
    1. Cell Biology

    Asymmetric clustering of centrosomes defines the early evolution of tetraploid cells

    Nicolaas C Baudoin et al.
    Newly formed tetraploid cells rapidly lose extra centrosomes acquired upon tetraploidization via asymmetric centrosome clustering during cell division and selective advantage of tetraploid daughter cells that inherit a single centrosome.

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