39 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A SPOPL/Cullin-3 ubiquitin ligase complex regulates endocytic trafficking by targeting EPS15 at endosomes

    Michaela Gschweitl et al.
    The poorly characterized BTB-protein SPOPL is required to maintain the function of the late endosomal system and the endocytic adaptor EPS15 is therein targeted by the SPOPL/Cullin-3 ubiquitin ligase complex for degradation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A nanobody-based molecular toolkit provides new mechanistic insight into clathrin-coat initiation

    Linton M Traub
    New intracellularly-expressed llama anti-EPS15 nanobodies reveal that pioneer clathrin-coat components function upstream of AP-2 clathrin adaptor deposition at the plasma membrane.
    1. Cell Biology

    Yeast Eps15-like endocytic protein Pan1p regulates the interaction between endocytic vesicles, endosomes and the actin cytoskeleton

    Junko Y Toshima et al.
    Phosphorylation of the Eps15-like protein Pan1p regulates how endocytic compartments interact with each other and with the actin cytoskeleton.
    1. Structural Biology and Molecular Biophysics

    Architecture and dynamics of the autophagic phosphatidylinositol 3-kinase complex

    Sulochanadevi Baskaran et al.
    The first three-dimensional structure of the PI3KC3 complex I, which is involved in autophagy, provides a framework for understanding the allosteric regulation of lipid kinase activity.
    1. Cell Biology

    Splicing variation of BMP2K balances abundance of COPII assemblies and autophagic degradation in erythroid cells

    Jaroslaw Cendrowski et al.
    Erythroid-enriched BMP2K kinase, in addition to its predicted function in endocytosis, regulates distribution and abundance of COPII assemblies and autophagic degradation through opposing actions of its two splicing variants.
    1. Cell Biology

    The membrane-associated proteins FCHo and SGIP are allosteric activators of the AP2 clathrin adaptor complex

    Gunther Hollopeter et al.
    Endocytosis is triggered by membrane-associated proteins that transform the clathrin adaptor into an active complex.
    1. Cell Biology

    AMPK and vacuole-associated Atg14p orchestrate μ-lipophagy for energy production and long-term survival under glucose starvation

    Arnold Y Seo et al.
    Upon AMPK activation by acute glucose restriction, Atg14p shifts its distribution from ER exit sites to liquid-ordered membrane domains on the vacuolar surface where, together with Atg6p, it facilitates LD-specific autophagy (i.e., microautophagy of lipid droplets) for energy production and long-term survival of starved cells.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The stress-responsive kinases MAPKAPK2/MAPKAPK3 activate starvation-induced autophagy through Beclin 1 phosphorylation

    Yongjie Wei et al.
    Nutrient starvation activates autophagy by a novel signaling mechanism that is blocked by one of the major autophagy inhibitors.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A clathrin coat assembly role for the muniscin protein central linker revealed by TALEN-mediated gene editing

    Perunthottathu K Umasankar et al.
    The muniscin protein FCHO1 interacts with, and activates, the adapter protein-2 complex (AP-2) to promote the assembly of clathrin-coated vesicles.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structural basis for COMPASS recognition of an H2B-ubiquitinated nucleosome

    Evan J Worden et al.
    The structure of the COMPASS methyltransferase bound to an H2B-ubiquitinated nucleosome provides insights into mechanisms of trans-histone cross-talk and the dynamic role of H2B ubiquitination in stimulating histone methylation.

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