79 results found
    1. Cell Biology
    2. Neuroscience

    Expression of WIPI2B counteracts age-related decline in autophagosome biogenesis in neurons

    Andrea KH Stavoe, Pallavi P Gopal ... Erika LF Holzbaur
    The dynamic phosphorylation of autophagy component WIPI2B is critical to maintain autophagosome biogenesis in neurons, and ectopic expression of WIPI2B can restore rates of autophagosome biogenesis in aged neurons.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The ER–Golgi intermediate compartment is a key membrane source for the LC3 lipidation step of autophagosome biogenesis

    Liang Ge, David Melville ... Randy Schekman
    A cell-free biochemical assay for protein lipidation identifies the ER–Golgi intermediate compartment as a key early station in the formation of an autophagosome.
    1. Cell Biology

    Mitochondrial Rab GAPs govern autophagosome biogenesis during mitophagy

    Koji Yamano, Adam I Fogel ... Richard J Youle
    Two GAP proteins bound to mitochondria regulate the enyzme Rab7, and thereby the expansion of the isolation membrane during mitophagy, downstream of PINK1 and Parkin, two proteins that are mutated in familial Parkinson's disease.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Phosphatidylinositol 3-kinase and COPII generate LC3 lipidation vesicles from the ER-Golgi intermediate compartment

    Liang Ge, Min Zhang, Randy Schekman
    Building on previous work (Ge et al., 2013), it is shown that the ER-Golgi intermediate compartment is a platform for the production of COPII vesicles as precursor membranes for the lipidation of LC3, which is an essential step in autophagosome biogenesis.
    1. Plant Biology

    An oomycete effector subverts host vesicle trafficking to channel starvation-induced autophagy to the pathogen interface

    Pooja Pandey, Alexandre Y Leary ... Tolga O Bozkurt
    A pathogen effector mimics starvation-induced autophagy by subverting host endomembrane trafficking to stimulate biogenesis of autophagosomes around pathogen feeding sites, revealing how pathogens interlock distinct host compartments to facilitate infection.
    1. Cell Biology
    2. Plant Biology

    Host autophagy machinery is diverted to the pathogen interface to mediate focal defense responses against the Irish potato famine pathogen

    Yasin F Dagdas, Pooja Pandey ... Tolga O Bozkurt
    Defense-related selective autophagy mediated by the antimicrobial autophagy cargo receptor NBR1/Joka2 is diverted to pathogen penetration sites to restrict plant colonization by the oomycete pathogen Phytophthora infestans.
    1. Cell Biology

    Sec24 phosphorylation regulates autophagosome abundance during nutrient deprivation

    Saralin Davis, Juan Wang ... Susan Ferro-Novick
    Phosphorylation of a core trafficking component, the COPII coat subunit Sec24, regulates cross-talk between the secretory and autophagy machinery during starvation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Autophagosome membrane expansion is mediated by the N-terminus and cis-membrane association of human ATG8s

    Wenxin Zhang, Taki Nishimura ... Sharon A Tooze
    cis-membrane insertion of human ATG8 N-terminus facilitates autophagosome membrane expansion independent of autophagic cargo.
    1. Cell Biology
    2. Developmental Biology

    Autophagosomes fuse to phagosomes and facilitate the degradation of apoptotic cells in Caenorhabditis elegans

    Omar Peña-Ramos, Lucia Chiao ... Zheng Zhou
    The crosstalk between autophagy and the phagocytosis of apoptotic cells, two cellular clearance pathways, promotes the fusion of the double-membrane autophagosomes to the phagosomes and plays an important role in the degradation of engulfed apoptotic cells.
    1. Cell Biology

    The ULK1-FBXW5-SEC23B nexus controls autophagy

    Yeon-Tae Jeong, Daniele Simoneschi ... Michele Pagano
    The control of SEC23B degradation by SCFFBXW5 and ULK1 regulates the autophagy.

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