1,244 results found
    1. Biochemistry and Chemical Biology

    Mechanism of cargo-directed Atg8 conjugation during selective autophagy

    Dorotea Fracchiolla et al.
    Autophagic cargo receptors recruit the E3-like enzyme for Atg8 lipid conjugation to the cargo and thereby promote local formation of Atg8-positive autophagosomal membranes.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    An analog to digital converter controls bistable transfer competence development of a widespread bacterial integrative and conjugative element

    Nicolas Carraro et al.
    A new multistep hierarchical cascade controls activation of an integrative and conjugative element in a small subpopulation of cells in its bacterial host, yielding proficient DNA transferring cells.
    1. Biochemistry and Chemical Biology

    Group II intron inhibits conjugative relaxase expression in bacteria by mRNA targeting

    Guosheng Qu et al.
    Group II introns can target mRNA, causing inhibition of gene expression, as a potential driver for evolution to the spliceosome.
    1. Epidemiology and Global Health
    2. Medicine

    Conjunction of factors triggering waves of seasonal influenza

    Ishanu Chattopadhyay et al.
    Three complementary computational approaches reveal a set of putative causes of initiation of pan-USA waves of influenza.
    1. Neuroscience

    Analysis of SUMO1-conjugation at synapses

    James A Daniel et al.
    Analyses using His6-HA-SUMO1 and SUMO1 KO mice indicate that SUMO1 modification of synaptic proteins is either absent or cannot be detected in brain and cultured neurons.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of ubiquitin ligation and lysine prioritization by a HECT E3

    Hari B Kamadurai et al.
    Structural studies reveal the mechanism by which a HECT E3 ubiquitin ligase carries out E2-to-E3-to-substrate ubiquitin transfer and prioritizes target lysines for ubiquitination.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Robust cullin-RING ligase function is established by a multiplicity of poly-ubiquitylation pathways

    Spencer Hill et al.
    Human cullin-RING ligases are buffered to a much greater extent than had been previously appreciated, and the roles of ubiquitin chain extension enzymes are far more nuanced at physiological concentrations.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    VivosX, a disulfide crosslinking method to capture site-specific, protein-protein interactions in yeast and human cells

    Chitra Mohan et al.
    An in vivo disulfide crosslinking assay shows preferential disassembly of nucleosomes with two H2A.Z histones by transcription machinery in yeast and conjugation to one or two ubiquitin moieties in human cells.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Elucidation of the anti-autophagy mechanism of the Legionella effector RavZ using semisynthetic LC3 proteins

    Aimin Yang et al.
    Legionella effector RavZ evades host autophagy by extracting LC3-PE from the membrane before deconjugation.
    1. Cell Biology

    Negative regulation of autophagy by UBA6-BIRC6–mediated ubiquitination of LC3

    Rui Jia, Juan S Bonifacino
    An ensemble of the ubiquitin-activating enzyme UBA6 and ubiquitin-conjugating enzyme/ubiquitin-ligase BIRC6 mediates ubiquitination of LC3, targeting the latter for proteasomal degradation and thus attenuating autophagic degradation of cellular substrates.

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