352 results found
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Defining key roles for auxiliary proteins in an ABC transporter that maintains bacterial outer membrane lipid asymmetry

    Shuhua Thong et al.
    Auxiliary proteins play functional roles in modulating the assembly and activity of a non-canonical ABC transporter that is important for the maintenance of outer membrane lipid asymmetry.
    1. Structural Biology and Molecular Biophysics

    Asymmetry of movements in CFTR's two ATP sites during pore opening serves their distinct functions

    Ben Sorum et al.
    In the CFTR chloride channel, ATP bound in the catalytic site promotes pore opening, whereas ATP bound in the non-catalytic site supports unidirectional conformational cycling by preventing pore closure without ATP hydrolysis in the catalytic site.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Fusion surface structure, function, and dynamics of gamete fusogen HAP2

    Juan Feng et al.
    Structure, dynamics, and mutation of a gamete fusion protein and comparisons to viral homologues suggest that after trimerization the domain bearing the membrane-inserting fusion loops can pivot with respect to the trimer 3-fold axis.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Computational prediction of CTCF/cohesin-based intra-TAD loops that insulate chromatin contacts and gene expression in mouse liver

    Bryan J Matthews, David J Waxman
    Certain types of 3D chromatin loops are easy to predict from existing or easily obtainable 2D information, which benefits gene expression studies in tissues/cells/organisms without extensive pre-existing 3D information.
    1. Structural Biology and Molecular Biophysics

    Molecular architecture of the 90S small subunit pre-ribosome

    Qi Sun et al.
    The nearly complete architecture of the gigantic 90S precursor of small ribosomal subunit is determined by cryo-EM.
    1. Developmental Biology

    Lunatic fringe-mediated Notch signaling regulates adult hippocampal neural stem cell maintenance

    Fatih Semerci et al.
    In adult mouse hippocampus, neural stem cell and their progeny communicate via Lunatic Fringe mediated Notch signaling to regulate stem cell quiescence, division, and fate.
    1. Neuroscience

    Epigenetic regulation of lateralized fetal spinal gene expression underlies hemispheric asymmetries

    Sebastian Ocklenburg et al.
    Gene expression asymmetries in fetal spinal cord are triggered by epigenetic mechanisms suggesting that handedness has a spinal instead of a cortical origin.
    1. Cell Biology

    Centriolar SAS-7 acts upstream of SPD-2 to regulate centriole assembly and pericentriolar material formation

    Kenji Sugioka et al.
    A genetic screen and live cell imaging show that a newly identified coiled-coil protein called SAS-7 is the earliest acting factor in centriole assembly yet identified in the roundworm Caenorhabditis elegans.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Architecture and RNA binding of the human negative elongation factor

    Seychelle M Vos et al.
    The structural architecture of the 4-subunit, RNA-binding human negative elongation factor NELF is derived by a combination of X-ray crystallography and protein crosslinking.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Imaging the fate of histone Cse4 reveals de novo replacement in S phase and subsequent stable residence at centromeres

    Jan Wisniewski et al.
    Internally tagged, functional Cse4/CENP-A/CenH3 histone variant is exclusively centromeric and stable through the budding yeast cell cycle after replacement in S phase.

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