399 results found
    1. Biochemistry and Chemical Biology

    Specific lid-base contacts in the 26s proteasome control the conformational switching required for substrate degradation

    Eric R Greene et al.
    The 26S proteasome lid subcomplex acts as an external scaffold whose interactions with the ATPase motor stabilize the substrate-engagement-competent state, and control conformational changes upon engagement for subsequent degradation steps.
    1. Structural Biology and Molecular Biophysics

    Helix breaking transition in the S4 of HCN channel is critical for hyperpolarization-dependent gating

    Marina A Kasimova et al.
    The gating polarity of a voltage-gated ion channel is primarily determined by turn propensity of residues at a critical position in the middle of the S4 voltage-sensing helix.
    1. Neuroscience

    Reliability of an interneuron response depends on an integrated sensory state

    May Dobosiewicz et al.
    A pair of interneurons in C. elegans condenses information from multiple sensory neurons into a uniform response, using an AND-gate logic to represent a stimulus with positive valence.
    1. Genetics and Genomics

    Rare variants contribute disproportionately to quantitative trait variation in yeast

    Joshua S Bloom et al.
    Rare, evolutionarily recent variants have larger effect sizes and are more likely to decrease fitness, providing evidence that quantitative traits in yeast have evolved under purifying selection.
    1. Developmental Biology

    Endothelial EphB4 maintains vascular integrity and transport function in adult heart

    Guillermo Luxán et al.
    EphB4 maintains critical functional properties of the adult cardiac vasculature, namely mechanical resistance and fatty acid transport capability, and thereby prevents dilated cardiomyopathy-like defects.
    1. Developmental Biology
    2. Neuroscience

    Synaptic mitochondria regulate hair-cell synapse size and function

    Hiu-tung C Wong et al.
    Mitochondrial calcium influx plays distinct roles in presynapse formation, function and stability in sensory hair cells.
    1. Ecology
    2. Neuroscience

    Optimal searching behaviour generated intrinsically by the central pattern generator for locomotion

    David W Sims et al.
    The nervous system circuitry that controls locomotion has evolved to intrinsically generate an optimal search pattern for resources.
    1. Neuroscience

    Apolipoprotein M-bound sphingosine-1-phosphate regulates blood–brain barrier paracellular permeability and transcytosis

    Mette Mathiesen Janiurek et al.
    Shortage of blood-borne apolipoprotein-M–bound sphingosine-1-phosphate, which accompanies various brain disorders, causes paracellular leak and increase in transcytosis at the blood–brain barrier, which can be reversed, thus is of clinical relevance.
    1. Biochemistry and Chemical Biology

    Non-enzymatic primer extension with strand displacement

    Lijun Zhou et al.
    Relying on RNA fragments derived from degradation or partial template copying, non-enzymatic primer extension with strand displacement offers a novel and prebiotically plausible approach to RNA self-replication.
    1. Cell Biology
    2. Developmental Biology

    Multiplex live single-cell transcriptional analysis demarcates cellular functional heterogeneity

    Ayhan Atmanli et al.
    A novel live-cell mRNA imaging technology identifies individual living cells based on their gene expression and enables the concurrent study of their physiology.

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