28 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. 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. 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. 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. 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. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Drastic changes in conformational dynamics of the antiterminator M2-1 regulate transcription efficiency in Pneumovirinae

    Cedric Leyrat et al.
    A combination of X-ray crystallography, molecular dynamics and small angle X-ray scattering shows that the transcription antiterminator M2-1 is a structurally dynamic homotetramer that undergoes large concerted conformational changes upon binding its target RNA.
    1. Biochemistry and Chemical Biology
    2. Stem Cells and Regenerative Medicine

    Pask integrates hormonal signaling with histone modification via Wdr5 phosphorylation to drive myogenesis

    Chintan K Kikani et al.
    PASK phosphorylates Wdr5 to trigger epigenetic changes at lineage specifying promoters resulting in transcriptional derepression and differentiation of stem or progenitor cells.
    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.
    1. Developmental Biology

    Germ cell connectivity enhances cell death in response to DNA damage in the Drosophila testis

    Kevin L Lu, Yukiko M Yamashita
    Genetic and cell biological study indicates that germ cells' connectivity serves as a mechanism to increase the sensitivity of germline to DNA damage, protecting the genome of gametes, in the Drosophila testis.

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