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

    Multiplex image-based autophagy RNAi screening identifies SMCR8 as ULK1 kinase activity and gene expression regulator

    Jennifer Jung et al.
    An image-based multiplex autophagosome RNAi screen targeting all Rab GTPases as well as their GAPs and GEFs identifies the Rab GEF SMCR8 as multifaceted autophagy modulator, which regulates kinase activity and gene expression of ULK1.
    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    1. Developmental Biology
    2. Neuroscience

    Extracellular Pgk1 enhances neurite outgrowth of motoneurons through Nogo66/NgR-independent targeting of NogoA

    Cheng Yung Lin et al.
    The amount of secreted Pgk1 is sharply decreased in Rtn4al/NogoA-overexpressed muscle cells, leading to various manifestations of neurodegenerative disease, including denervated neuromuscular junction and failed neurite outgrowth of motoneurons.
    1. Cell Biology

    Cyclin A/Cdk1 modulates Plk1 activity in prometaphase to regulate kinetochore-microtubule attachment stability

    Ana Maria G Dumitru et al.
    Quantitative phosphoproteomics defines the substrates for Cyclin A/Cdk1 kinase during early mitosis and follow up studies validate that one identified substrate, MYPT1, influences the stability of k-MT attachments by regulating Plk1.
    1. Neuroscience

    Loss of Frataxin activates the iron/sphingolipid/PDK1/Mef2 pathway in mammals

    Kuchuan Chen et al.
    The iron/sphingolipid/PDK1/Mef2 pathway is activated in mammals upon loss of Frataxin.
    1. Cell Biology

    The ULK1-FBXW5-SEC23B nexus controls autophagy

    Yeon-Tae Jeong et al.
    The control of SEC23B degradation by SCFFBXW5 and ULK1 regulates the autophagy.
    1. Chromosomes and Gene Expression

    Exploration of CTCF post-translation modifications uncovers Serine-224 phosphorylation by PLK1 at pericentric regions during the G2/M transition

    Brian C Del Rosario et al.
    The chromosome architectural protein, CTCF, is phosphorylated at Ser224 in a cell-cycle-dependent manner and abrogation of phosphorylation leads to a cell growth defect.
    1. Cell Biology

    PLK4 promotes centriole duplication by phosphorylating STIL to link the procentriole cartwheel to the microtubule wall

    Tyler Chistopher Moyer, Andrew Jon Holland
    Cell biological, biochemical, and genetic analyses reveal that PLK4 controls two different phospho-dependent binding interactions that act together to promote procentriole assembly.
    1. Cell Biology
    2. Developmental Biology

    HMMR acts in the PLK1-dependent spindle positioning pathway and supports neural development

    Marisa Connell et al.
    HMMR regulates spindle positioning in neural and other cell types downstream of PLK1 and subsequently affects cortical NuMA-Dynein localization.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    STIL binding to Polo-box 3 of PLK4 regulates centriole duplication

    Christian Arquint et al.
    Binding of STIL to PLK4's characteristic Polo-box 3 links PLK4 kinase activation to STIL self-association and is a crucial regulatory step for the localized recruitment of downstream factors in centriole duplication.

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