260 results found
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural intermediates observed only in intact Escherichia coli indicate a mechanism for TonB-dependent transport

    Thushani D Nilaweera et al.
    Pulse electron paramagnetic resonance on intact Escherichia coli reveals a substrate-induced structural transition in BtuB, the vitamin B12 transporter, which is not seen in reconstituted membranes and indicates a mechanism of transport.
    1. Cell Biology

    A conserved LDL-receptor motif regulates corin and CD320 membrane targeting in polarized renal epithelial cells

    Ce Zhang et al.
    A conserved motif in corin and CD320 LDL receptor modules regulates specific apical trafficking in polarized renal epithelial cells.
    1. Medicine

    High-phytate/low-calcium diet is a risk factor for crystal nephropathies, renal phosphate wasting, and bone loss

    Ok-Hee Kim et al.
    A high-phytate-low Ca2+ diet causes crystal nephropathies, renal phosphate wasting, and bone disease in rats, whereas high Ca2+ intake ameliorates the detrimental effects of a high-phytate diet.
    1. Epidemiology and Global Health

    Vitamin A supplements, routine immunization, and the subsequent risk of Plasmodium infection among children under 5 years in sub-Saharan Africa

    Maria-Graciela Hollm-Delgado et al.
    An analysis of national survey data shows that vitamin A might protect against malaria infection, an effect potentially modified by seasonality, and that no routine vaccinations were linked to parasitemia, though BCG vaccination was associated with PfHRP-2 antigenemia.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Multiscale analysis reveals that diet-dependent midgut plasticity emerges from alterations in both stem cell niche coupling and enterocyte size

    Alessandro Bonfini et al.
    The nutrient composition of food alters both the size of gut epithelial cells and the ability of the stem cell niche to control tissue turnover, resulting in changes in size at the organ level.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Integrated culturing, modeling and transcriptomics uncovers complex interactions and emergent behavior in a three-species synthetic gut community

    Kevin D'hoe et al.
    Human gut bacteria alter their metabolism in response to each other's presence, which causes their community dynamics to deviate from predictions that are based on mono-culture data.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    In vitro reconstitution of dynamically interacting integral membrane subunits of energy-coupling factor transporters

    Inda Setyawati et al.
    Integral membrane subunits of energy-coupling factor transporters associate with and dissociate from each other as part of the transport mechanism.
    1. Developmental Biology

    A vitamin-B2-sensing mechanism that regulates gut protease activity to impact animal’s food behavior and growth

    Bin Qi et al.
    The availability of an essential dietary micronutrient is evaluated by an intestinal signaling system that in turn regulates food-uptake and response behaviors by modulating protease expression.
    1. Neuroscience

    Catecholaminergic challenge uncovers distinct Pavlovian and instrumental mechanisms of motivated (in)action

    Jennifer C Swart et al.
    Motivational coupling of action to reward and inhibition to punishment is subserved by dissociable learning and choice processes, and is modulated by dopamine/noradrenaline transporter blockade.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Plasmodium falciparum parasites deploy RhopH2 into the host erythrocyte to obtain nutrients, grow and replicate

    Natalie A Counihan et al.
    Plasmodium parasites secrete RhopH2 from the rhoptry organelle into their host red blood cell to facilitate the uptake of essential nutrients required for parasite replication and survival.

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