528 results found
    1. Microbiology and Infectious Disease

    Plasmodium P36 determines host cell receptor usage during sporozoite invasion

    Giulia Manzoni et al.
    Host CD81 and Scavenger Receptor BI operate independently to mediate invasion of hepatocytes by different species of Plasmodium sporozoites, which use the parasite protein P36 as a key determinant of the entry route.
    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.
    1. Cell Biology

    Single-cell RNA-seq reveals hidden transcriptional variation in malaria parasites

    Adam J Reid et al.
    Plasmodium parasite transcription shifts dramatically along asexual development, and transmission stages variably express important immune evasion genes, suggesting much interesting biology has until now been hidden by bulk analyses.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage

    Timothy J Wendorff, James M Berger
    The engagement of DNA crossings is shown to license ATP hydrolysis and DNA cleavage by topoisomerase VI, a finding with mechanistic ramifications for related GHKL ATPases and meiotic recombination machineries.
    1. Cell Biology
    2. Developmental Biology

    Activation of PTHrP-cAMP-CREB1 signaling following p53 loss is essential for osteosarcoma initiation and maintenance

    Mannu K Walia et al.
    The loss of p53 in bone cells activates critical signaling pathways; these are also essential in bone cancer.
    1. Structural Biology and Molecular Biophysics

    Structures of the ATP-fueled ClpXP proteolytic machine bound to protein substrate

    Xue Fei et al.
    Cryo-EM structures of the ClpXP protease reveal how protein substrates are bound, show how spiral ClpX hexamers bind symmetry-mismatched heptameric ClpP rings, and suggest mechanisms for processive substrate translocation.
    1. Developmental Biology

    A switch in transcription and cell fate governs the onset of an epigenetically-deregulated tumor in Drosophila

    Joana Torres et al.
    A previously unknown oncogenic feature of an embryonic transcription factor was uncovered from transcriptomic analysis of tumors that lack functional Polycomb silencing.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural ordering of the Plasmodium berghei circumsporozoite protein repeats by inhibitory antibody 3D11

    Iga Kucharska et al.
    A comprehensive structural analysis of inhibitory murine antibody 3D11 binding to Plasmodium berghei circumsporozoite protein reveals common mechanisms of antibody evolution in mammals against Plasmodium parasites.
    1. Microbiology and Infectious Disease

    Evolutionarily distant I domains can functionally replace the essential ligand-binding domain of Plasmodium TRAP

    Dennis Klug et al.
    Exchange of the I domain in the Plasmodium surface protein TRAP against evolutionary distant I domains rescues infectivity of sporozoites.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Blood-stage immunity to Plasmodium chabaudi malaria following chemoprophylaxis and sporozoite immunization

    Wiebke Nahrendorf et al.
    A novel mouse model of immunization against Plasmodium chabaudi involving infectious mosquito bites and drug-treatment elicits protection against blood-stage malaria parasites, and shows that protection is not necessarily life cycle stage-specific.

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