1,102 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Contractile acto-myosin network on nuclear envelope remnants positions human chromosomes for mitosis

    Alexander JR Booth et al.
    Live-cell imaging shows that the contractile acto-myosin network on the nuclear envelope remnant positions chromosomes in early mitosis to ensure efficient and correct interactions between chromosomes and the mitotic spindle.
    1. Microbiology and Infectious Disease

    Coordination of peptidoglycan synthesis and outer membrane constriction during Escherichia coli cell division

    Andrew N Gray et al.
    The protein CpoB regulates PBP1B activity in response to the Tol energy state, which facilitates feedback and synchronicity between envelope constriction processes during Gram-negative bacterial cell division.
    1. Cell Biology
    2. Evolutionary Biology

    Phylogenomic analysis supports the ancestral presence of LPS-outer membranes in the Firmicutes

    Luisa CS Antunes et al.
    Phylogenomics provides support for the Gram-positive type of bacterial cell envelope being a derived character that arose independently multiple times through loss of an ancestral outer membrane.
  1. Nuclear pore assembly proceeds by an inside-out extrusion of the nuclear envelope

    Shotaro Otsuka et al.
    Nuclear pores assemble asymmetrically, by an inside-out evagination of the inner nuclear membrane that grows in diameter and depth until it fuses with the flat outer nuclear membrane.
    1. Immunology and Inflammation

    The HIV-1 envelope protein gp120 is captured and displayed for B cell recognition by SIGN-R1+ lymph node macrophages

    Chung Park et al.
    Lymph node gp120 specific B cells extract locally injected HIV-1 gp120 from SIGN-R1 positive macrophages that line the subcapsular sinus overlying the lymph node interfollicular channels.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Class-A penicillin binding proteins do not contribute to cell shape but repair cell-wall defects

    Antoine Vigouroux et al.
    Class-A penicillin-binding proteins are dispensable for rod-like cell-shape but essential for mechanical integrity by sensing and repairing cell-wall defects locally, as investigated in the model system Escherichia coli.
    1. Cell Biology

    CDK1 controls CHMP7-dependent nuclear envelope reformation

    Alberto T Gatta et al.
    CHMP7 is phosphorylated by CDK1 upon mitotic entry, preventing interaction with LEM2 and inappropriate assembly during mitotic exit.
    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. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    Profiling the Escherichia coli membrane protein interactome captured in Peptidisc libraries

    Michael Luke Carlson et al.
    Trapping of the cell envelope proteome into water-soluble peptidisc library allows high-throughput definition of the membrane protein interactome.
    1. Microbiology and Infectious Disease

    Cellular entry and uncoating of naked and quasi-enveloped human hepatoviruses

    Efraín E Rivera-Serrano et al.
    Quasi-enveloped hepatitis A virions undergo clathrin-mediated endocytosis, followed by ALIX-dependent trafficking to lysosomes where the quasi-envelope is degraded, triggering uncoating of the RNA genome in association with lysosomal membrane rupture.

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