49 results found
    1. Cell Biology

    USP16 counteracts mono-ubiquitination of RPS27a and promotes maturation of the 40S ribosomal subunit

    Christian Montellese et al.
    The deubiquitinase USP16 is associated with cytoplasmic precursors of 40S ribosomal subunits and promotes their final maturation by removal of trans-monoubiquitin from RPS27a.
    1. Cell Biology

    Distinct regulatory ribosomal ubiquitylation events are reversible and hierarchically organized

    Danielle M Garshott et al.
    A hierarchical relationship among highly conserved regulatory ribosomal ubiquitylation events and the presence of antagonistic deubiquitylating enzymes suggests a dynamic ubiquitin code impacts ribosome-associated activities.
    1. Cell Biology
    2. Neuroscience

    Cell-type-specific regulation of neuronal intrinsic excitability by macroautophagy

    Ori J Lieberman et al.
    In addition to its classic role in synaptic function and plasticity, macroautophagy regulates neuronal intrinsic excitability via degradation of acetylated Kir2 channels to control neurotransmission.
    1. Chromosomes and Gene Expression

    Two roles for the yeast transcription coactivator SAGA and a set of genes redundantly regulated by TFIID and SAGA

    Rafal Donczew et al.
    The transcription coactivators SAGA and TFIID have redundant function at a subset of yeast genes while SAGA also contributes to transcription of all genes through regulation of chromatin modifications.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Cycles of autoubiquitination and deubiquitination regulate the ERAD ubiquitin ligase Hrd1

    Brian G Peterson et al.
    The Hrd1-centric endoplasmic reticulum associated degradation system is regulated by interplay between the system's components.
    1. Biochemistry and Chemical Biology

    Specific lid-base contacts in the 26s proteasome control the conformational switching required for substrate degradation

    Eric R Greene et al.
    The 26S proteasome lid subcomplex acts as an external scaffold whose interactions with the ATPase motor stabilize the substrate-engagement-competent state, and control conformational changes upon engagement for subsequent degradation steps.
    1. Developmental Biology
    2. Microbiology and Infectious Disease

    The Wolbachia cytoplasmic incompatibility enzyme CidB targets nuclear import and protamine-histone exchange factors

    John Frederick Beckmann et al.
    Genetic and proteomic screening with Wolbachia's CidB enzyme reveal the mechanisms and targets of cytoplasmic incompatibility (CI).
    1. Structural Biology and Molecular Biophysics
    2. Biochemistry and Chemical Biology

    Protein polyglutamylation catalyzed by the bacterial calmodulin-dependent pseudokinase SidJ

    Alan Sulpizio et al.
    The pseudokinase-like Legionella effector SidJ catalyzes the glutamylation of bacterial ubiquitin ligases in a calmodulin-dependent manner.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A potent voltage-gated calcium channel inhibitor engineered from a nanobody targeted to auxiliary CaVβ subunits

    Travis J Morgenstern et al.
    A novel engineered protein that uncouples electrical signals from downstream biological responses in excitable cells provides a unique investigative tool with potential therapeutic applications.
    1. Microbiology and Infectious Disease

    USP49 potently stabilizes APOBEC3G protein by removing ubiquitin and inhibits HIV-1 replication

    Ting Pan et al.
    USP49 can increase A3G protein expression and enhance its anti-HIV-1 activity, which is also correlated with hypermutations and affects the HIV-1 latent reservoir.

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