35 results found
    1. Cell Biology

    CYK-4 functions independently of its centralspindlin partner ZEN-4 to cellularize oocytes in germline syncytia

    Kian-Yong Lee et al.
    The CYK-4 subunit of the broadly conserved intercellular bridge component centralspindlin, but not its ZEN-4 subunit, is essential for the cytokinesis-like closure of intercellular bridges that cellularizes oocytes to separate them from germline syncytia.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Co-option of an endogenous retrovirus envelope for host defense in hominid ancestors

    Daniel Blanco-Melo et al.
    The reconstitution of a functional envelope protein from an extinct hominid retrovirus reveals its receptor and an ancient host defense that may have led to the extinction of the virus.
    1. Developmental Biology

    Compartmentalized oskar degradation in the germ plasm safeguards germline development

    Catherine E Eichler et al.
    RNP granules confer temporal and spatial regulation of oskar mRNA degradation to minimize inheritance of oskar mRNAby germ cells and thereby protect germline development.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Dynamic multifactor hubs interact transiently with sites of active transcription in Drosophila embryos

    Mustafa Mir et al.
    The probability of transcription factors binding to their target sites is choreographed through the formation of dynamic multi-protein hubs that transiently interact with actively transcribing genes.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    EphA7 promotes myogenic differentiation via cell-cell contact

    Laura L Arnold et al.
    The juxtacrine signaling molecule EphA7, when expressed on terminally-differentiated myocytes, non-cell-autonomously induces adjacent myoblasts to also commit to terminal differentiation leading to rapid coordinated differentiation across the entire population.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    RNA-directed remodeling of the HIV-1 protein Rev orchestrates assembly of the Rev–Rev response element complex

    Bhargavi Jayaraman et al.
    A pliable hydrophobic interface in the HIV-1 Rev protein enables assembly of diverse oligomeric structures, guided by the RRE scaffold present in HIV-1 mRNAs.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The homo-oligomerisation of both Sas-6 and Ana2 is required for efficient centriole assembly in flies

    Matthew A Cottee et al.
    The structure of the Ana2 Central Coiled-Coil Domain provides insight into how centriolar cartwheel components may be recruited and assembled, and indicates that cartwheel assembly involves more than just SAS-6 oligomerisation.
    1. Cell Biology
    2. Evolutionary Biology

    A unicellular relative of animals generates a layer of polarized cells by actomyosin-dependent cellularization

    Omaya Dudin et al.
    Cellularization in Sphaeroforma arctica generates a self-organized structure that morphologically resembles an epithelium, and is associated with tightly regulated expression of cell adhesion pathways.
    1. Cell Biology

    Serotonin signaling by maternal neurons upon stress ensures progeny survival

    Srijit Das et al.
    Neuronal serotonin release tunes transcription response times of Caenorhabditis elegans germ cells to promote the survival and stress resistance of future offspring.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Nucleocapsid assembly in pneumoviruses is regulated by conformational switching of the N protein

    Max Renner et al.
    A structural comparison of different states of the protein responsible for encapsidation of the viral RNA genome provides mechanistic insights into this process.

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