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    1. Microbiology and Infectious Disease

    Process- and product-related impurities in the ChAdOx1 nCov-19 vaccine

    Lea Krutzke, Reinhild Rösler ... Stefan Kochanek
    Analysis of protein content and protein composition of the ChAdOx1 nCov-19 vaccine, but not of the Ad26.COV2.S vaccine, indicated significantly higher than expected levels of host cell proteins (HCPs) and of free viral proteins.
    1. Chromosomes and Gene Expression

    Progerin reduces LAP2α-telomere association in Hutchinson-Gilford progeria

    Alexandre Chojnowski, Peh Fern Ong ... Oliver Dreesen
    Expression of the lamina-associated polypeptide α (LAP2α) prevents premature cellular ageing caused by expression of progerin in Hutchinson-Gilford progeria syndrome.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Regulation of multiple signaling pathways promotes the consistent expansion of human pancreatic progenitors in defined conditions

    Luka Jarc, Manuj Bandral ... Anthony Gavalas
    The signaling requirements to decouple proliferation of pancreatic progenitors from differentiation were elucidated and employed for the reproducible expansion, under GMP-compliant conditions, of pancreatic progenitors derived from different human pluripotent stem cell lines.
    1. Chromosomes and Gene Expression

    Scc2/Nipbl hops between chromosomal cohesin rings after loading

    James Rhodes, Davide Mazza ... Stephan Uphoff
    The cohesin loading factor Scc2/Nipbl interacts frequently with cohesin after the loading reaction in a manner consistent with a role in stimulating loop extrusion.
    1. Cell Biology

    MiniCORVET is a Vps8-containing early endosomal tether in Drosophila

    Péter Lőrincz, Zsolt Lakatos ... Gábor Juhász
    An unconventional endosomal tether in Drosophila melanogaster only has four of the six subunits found in the yeast complex.
    1. Biochemistry and Chemical Biology

    A distinct tethering step is vital for vacuole membrane fusion

    Michael Zick, William T Wickner
    Rigorous assays of membrane fusion show that a distinct tethering step is required for lumenal compartment mixing in a manner that extends beyond simply increasing the amount of total trans-SNARE complex.
    1. Ecology

    Group size and composition influence collective movement in a highly social terrestrial bird

    Danai Papageorgiou, Damien Roger Farine
    High-resolution GPS data revealed a quadratic relationship between group size and movement, with vulturine guineafowl groups of intermediate size exhibiting the largest home-range size and greater variation in site use.
    1. Ecology
    2. Evolutionary Biology

    Ecological and social pressures interfere with homeostatic sleep regulation in the wild

    J Carter Loftus, Roi Harel ... Margaret C Crofoot
    Collective dynamics and site familiarity, but not the recent history of sleep and activity, shape sleep patterns in a wild social primate.
    1. Structural Biology and Molecular Biophysics

    The SARS-CoV-2 accessory protein Orf3a is not an ion channel, but does interact with trafficking proteins

    Alexandria N Miller, Patrick R Houlihan ... David E Clapham
    SARS coronaviruses encode several mysterious proteins such as Orf3a and, in contrast to what has been claimed, Orf3a is not an ion channel but rather disrupts cellular trafficking by binding to the protein sorting complex known as HOPS.
    1. Biochemistry and Chemical Biology

    Sec17/Sec18 can support membrane fusion without help from completion of SNARE zippering

    Hongki Song, Thomas L Torng ... William T Wickner
    Sec18(NSF) and Sec17(αSNAP) provide a parallel pathway to fusion that is independent of energy from SNARE zippering.