489 results found
    1. Cell Biology

    Multi-phosphorylation reaction and clustering tune Pom1 gradient mid-cell levels according to cell size

    Veneta Gerganova et al.
    Advanced microscopy techniques reveal that clusters of Pom1 kinase at the membrane represent the functional unit that shape the concentration gradients and modulate Pom1 mid-cell levels according to cell size.
    1. Neuroscience

    POMC neurons expressing leptin receptors coordinate metabolic responses to fasting via suppression of leptin levels

    Alexandre Caron et al.
    A subset of hypothalamic POMC neurons that express leptin receptors control metabolic responses to changing energy availability including regulating blood glucose and leptin levels.
    1. Neuroscience

    Antagonistic modulation of NPY/AgRP and POMC neurons in the arcuate nucleus by noradrenalin

    Lars Paeger et al.
    The coordinated differential modulation of satiety signaling POMC- and hunger signaling AgRP- neurons in the arcuate nucleus of the hypothalamus assigns an important role to noradrenalin to promote feeding.
    1. Neuroscience

    Energy imbalance alters Ca2+ handling and excitability of POMC neurons

    Lars Paeger et al.
    The development of diet-dependent obesity results in the deterioration of calcium homeostasis in pro-opiomelanocortin-expressing neurons and impaired function of the same neurons.
    1. Biochemistry and Chemical Biology

    POMK regulates dystroglycan function via LARGE1-mediated elongation of matriglycan

    Ameya S Walimbe et al.
    Protein O-Mannose Kinase enables Like-acetyl-glucosaminyltransferase 1 to elongate matriglycan on α-dystroglycan, thereby allowing matriglycan to function as a scaffold for extracellular matrix proteins and prevent muscular dystrophy.
    1. Neuroscience

    Insulin regulates POMC neuronal plasticity to control glucose metabolism

    Garron T Dodd et al.
    Feeding and fasting associated alterations in proopiomelanocortin neuronal responses to insulin coordinate glucose metabolism.
    1. Neuroscience

    Central Dicer-miR-103/107 controls developmental switch of POMC progenitors into NPY neurons and impacts glucose homeostasis

    Sophie Croizier et al.
    Loss miRNA maturation in proopiomelanocortin (POMC) neurons causes metabolic dysregulation and favors the differentiation of Pomc progenitors into neuropeptide Y neurons, a developmental process that appears to specifically involve miR-103/107.
    1. Neuroscience

    Arcuate hypothalamic AgRP and putative POMC neurons show opposite changes in spiking across multiple timescales

    Yael Mandelblat-Cerf et al.
    Gradual changes in the firing of specific hypothalamic neurons over many hours signal falling energy levels, while short-lived changes over seconds and minutes signal the availability of food.
    1. Cell Biology

    Stable Pom1 clusters form a glucose-modulated concentration gradient that regulates mitotic entry

    Corey A H Allard et al.
    Dynamic signaling protein clusters sample and map the cell surface to ensure that cells divide at the proper size.
    1. Microbiology and Infectious Disease

    Cryo-EM reveals species-specific components within the Helicobacter pylori Cag type IV secretion system core complex

    Michael J Sheedlo et al.
    The structure of a Type IV secretion system provides a framework for understanding assembly of a protein-injection machine.

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