801 results found
    1. Structural Biology and Molecular Biophysics
    2. Cancer Biology

    The Ki-67 and RepoMan mitotic phosphatases assemble via an identical, yet novel mechanism

    Ganesan Senthil Kumar et al.
    Building on previous work (Booth et al, 2014), we show how two mitotic phosphatases are formed, how they are regulated by opposing kinases during the cell cycle and reveal a novel opportunity for the development of cancer therapeutics.
    1. Biochemistry and Chemical Biology

    PPM1H phosphatase counteracts LRRK2 signaling by selectively dephosphorylating Rab proteins

    Kerryn Berndsen et al.
    PPM1H protein phosphatase dephosphorylates Rab proteins modulating LRRK2 signalling.
    1. Cell Biology
    2. Developmental Biology

    Protein phosphatase 1 activity controls a balance between collective and single cell modes of migration

    Yujun Chen et al.
    Protein phosphatase 1 activity promotes cohesive collective cell migration by restricting actomyosin contractility to the periphery of the collective and maintaining proper cadherin–catenin complex protein levels at cell–cell junctions.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Fcp1 phosphatase controls Greatwall kinase to promote PP2A-B55 activation and mitotic progression

    Rosa Della Monica et al.
    The phosphatase Fcp1 inactivates Greatwall kinase at the end of mitosis.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Actin dynamics tune the integrated stress response by regulating eukaryotic initiation factor 2α dephosphorylation

    Joseph E Chambers et al.
    Monomeric actin forms a crucial component of the eIF2α holophosphatase linking the integrated stress response to actin polymeric status.
    1. Cell Biology

    Protein Phosphatase 1 inactivates Mps1 to ensure efficient Spindle Assembly Checkpoint silencing

    Margarida Moura et al.
    Inactivation of the master mitotic checkpoint regulator Mps1 by protein phosphatase 1 is required for timely segregation of the genetic material during cell division.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A widespread family of serine/threonine protein phosphatases shares a common regulatory switch with proteasomal proteases

    Niels Bradshaw et al.
    Structures of active and inactive conformations of a PP2C family phosphatase reveal a conserved switch that controls enzymatic activity and point to an unexpected relationship between phosphatases and proteasomal proteases.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    The human SKA complex drives the metaphase-anaphase cell cycle transition by recruiting protein phosphatase 1 to kinetochores

    Sushama Sivakumar et al.
    Microtubule binding by the Spindle and Kinetochore Associated (Ska) complex concentrates protein phosphatase 1 at metaphase kinetochores to overcome the spindle checkpoint thus driving anaphase onset and mitotic exit.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Aurkb/PP1-mediated resetting of Oct4 during the cell cycle determines the identity of embryonic stem cells

    Jihoon Shin et al.
    The regulation of the core transcription factor Oct4 by the Aurkb-PP1 axis links the cell cycle to pluripotency programs in embryonic stem cells.
    1. Cell Biology

    Kinetochores attached to microtubule-ends are stabilised by Astrin bound PP1 to ensure proper chromosome segregation

    Duccio Conti et al.
    Human chromosome-microtubule attachments are stabilised by Astrin-mediated dynamic delivery of PP1 phosphatase to the attachment site, which ensures the normal segregation of chromosomes.

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