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    1. Cell Biology

    Dopamine receptors reveal an essential role of IFT-B, KIF17, and Rab23 in delivering specific receptors to primary cilia

    Alison Leaf, Mark Von Zastrow
    The mechanism of signaling receptor delivery to primary cilia involves a specific cellular role of a Rab protein that is critical for vertebrate development.
    1. Neuroscience

    Ventrolateral periaqueductal gray neurons prioritize threat probability over fear output

    Kristina M Wright, Michael A McDannald
    Single-unit activity in the ventrolateral periaqueductal gray, a brain region implicated in organizing fear output, is found to reflect threat probability, a more versatile threat signal.
    1. Neuroscience

    Transient oxytocin signaling primes the development and function of excitatory hippocampal neurons

    Silvia Ripamonti et al.
    Perturbation of oxytocin signaling causes alterations that may be causally involved in the etiology of oxytocin-related neurobehavioral disorders.
    1. Neuroscience

    Morphine disinhibits glutamatergic input to VTA dopamine neurons and promotes dopamine neuron excitation

    Ming Chen et al.
    Experiments examining the actions of morphine on single neurons from one of the brain's reward centers, the VTA, reveal the mechanism by which the drug exerts its hedonic effects.
    1. Neuroscience

    Inhibition of Transient Receptor Potential Melastatin 3 ion channels by G-protein βγ subunits

    Doreen Badheka et al.
    Electrophysiological experiments, Ca2+ imaging, and behavioral studies in mice identify the TRPM3 ion channel as a novel target of G-protein βγ subunits.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the rhodopsin-Gαi-βγ complex reveals binding of the rhodopsin C-terminal tail to the gβ subunit

    Ching-Ju Tsai et al.
    The structure of a light-sensitive G protein-coupled receptor in complex with a Gi-protein heterotrimer provides a structural foundation for the role of the receptor C-terminal tail in scaffolding and signaling.
    1. Cell Biology

    Phosphorylation of β-arrestin2 at Thr383 by MEK underlies β-arrestin-dependent activation of Erk1/2 by GPCRs

    Elisabeth Cassier et al.
    Phosphoproteomics identifies β-arrestin 2 phosphorylation at Thr383 by MEK as a key step of GPCR-induced Erk½ activation, thus providing new insight into the molecular mechanism underlying β-arrestin-dependent GPCR-operated signaling.
    1. Computational and Systems Biology
    2. Neuroscience

    A cholinergic feedback circuit to regulate striatal population uncertainty and optimize reinforcement learning

    Nicholas T Franklin, Michael J Frank
    Computational modeling suggests that feedback between striatal cholinergic neurons and spiny neurons dynamically adjusts learning rates to optimize behavior in a variable world.
    1. Computational and Systems Biology
    2. Neuroscience

    The periaqueductal gray and Bayesian integration in placebo analgesia

    Arvina Grahl et al.
    Bayesian integration is able to predict placebo treatment outcomes by focusing especially on the influence of the precision of expectations.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Reciprocal regulation among TRPV1 channels and phosphoinositide 3-kinase in response to nerve growth factor

    Anastasiia Stratiievska et al.
    A dual-color TIRFM study reveals a new form of inflammatory regulation, in which a lipid kinase and ion channel reciprocally regulate each other to amplify the response to painful stimuli.