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Dictyostelium

  • RESEARCH ARTICLE
    Two conserved glycine residues in mammalian and Dictyostelium Rictor are required for mTORC2 activity and integrity
    Barbara Pergolizzi, Cristina Panuzzo, M. Shahzad Ali, Marco Lo Iacono, Chiara Levra Levron, Luca Ponzone, Marta Prelli, Daniela Cilloni, Enzo Calautti, Salvatore Bozzaro, Enrico Bracco
    Journal of Cell Science 2019 132: jcs236505 doi: 10.1242/jcs.236505 Published 14 November 2019

    Summary: Two glycine residues are essential for the mTORC2 activity and integrity in organisms that are distantly related, suggesting they have a conserved role in mTORC2 assembly and functioning.

  • RESEARCH ARTICLE
    Akt and SGK protein kinases are required for efficient feeding by macropinocytosis
    Thomas D. Williams, Sew-Yeu Peak-Chew, Peggy Paschke, Robert R. Kay
    Journal of Cell Science 2019 132: jcs224998 doi: 10.1242/jcs.224998 Published 24 January 2019

    Summary: Dictyostelium feed by macropinocytosis in a PIP3-dependent manner. Macropinosomes are smaller and fluid uptake is nearly abolished in cells lacking either PI3Ks or the downstream kinases PkbA and PkbR1.

  • RESEARCH ARTICLE
    Localization of all four ZnT zinc transporters in Dictyostelium and impact of ZntA and ZntB knockout on bacteria killing
    Caroline Barisch, Vera Kalinina, Louise H. Lefrançois, Joddy Appiah, Ana T. López-Jiménez, Thierry Soldati
    Journal of Cell Science 2018 131: jcs222000 doi: 10.1242/jcs.222000 Published 30 November 2018

    Highlighted Article: Metal poisoning is one of the bactericidal strategies of macrophages. Here, we describe the dynamics of free Zn2+ and the role of Zn2+ transporters during phagocytosis in Dictyostelium.

  • RESEARCH ARTICLE
    Calcium influx mediates the chemoattractant-induced translocation of the arrestin-related protein AdcC in Dictyostelium
    Lauriane Mas, Adeline Cieren, Christian Delphin, Agnès Journet, Laurence Aubry
    Journal of Cell Science 2018 131: jcs207951 doi: 10.1242/jcs.207951 Published 11 October 2018

    Summary: The multimodular arrestin-related protein AdcC from Dictyostelium responds to a calcium increase by translocating to the plasma membrane in a C2- and SAM domain-dependent manner.

  • RESEARCH ARTICLE
    Adenylyl cyclase A mRNA localized at the back of cells is actively translated in live chemotaxing Dictyostelium
    Weiye Wang, Song Chen, Satarupa Das, Wolfgang Losert, Carole A. Parent
    Journal of Cell Science 2018 131: jcs216176 doi: 10.1242/jcs.216176 Published 4 May 2018

    Summary: The relay of cAMP signals is essential for streaming during Dictyostelium chemotaxis. We report the dynamic enrichment and translation of the mRNA encoding adenylyl cyclase A at the back of cells during this process.

  • RESEARCH ARTICLE
    The cytoskeleton regulates symmetry transitions in moving amoeboid cells
    Peter J. M. van Haastert, Ineke Keizer-Gunnink, Arjan Kortholt
    Journal of Cell Science 2018 131: jcs208892 doi: 10.1242/jcs.208892 Published 9 April 2018

    Summary: Dynamic shape changes of amoeboid cells are far from random, but are the consequence of refined symmetries and symmetry changes that are orchestrated by small G-proteins and the cytoskeleton.

  • RESEARCH ARTICLE
    The physiological regulation of macropinocytosis during Dictyostelium growth and development
    Thomas D. Williams, Robert R. Kay
    Journal of Cell Science 2018 131: jcs213736 doi: 10.1242/jcs.213736 Published 21 March 2018

    Highlighted Article: A high-throughput flow cytometry assay is used to examine the regulation of macropinocytosis during transitions between feeding modes (macropinocytic and phagocytic) and entry into development in Dictyostelium. Macropinocytosis inhibitors are assessed.

  • RESEARCH ARTICLE
    The polymorphic proteins TgrB1 and TgrC1 function as a ligand–receptor pair in Dictyostelium allorecognition
    Shigenori Hirose, Gong Chen, Adam Kuspa, Gad Shaulsky
    Journal of Cell Science 2017 130: 4002-4012; doi: 10.1242/jcs.208975

    Highlighted Article: Two polymorphic membrane proteins that mediate allorecognition in Dictyostelium function as a ligand–receptor pair and their binding activates a signaling mechanism that is required for cooperative aggregation and differentiation.

  • RESEARCH ARTICLE
    Extracellular polyphosphate signals through Ras and Akt to prime Dictyostelium discoideum cells for development
    Patrick M. Suess, Jacob Watson, Wensheng Chen, Richard H. Gomer
    Journal of Cell Science 2017 130: 2394-2404; doi: 10.1242/jcs.203372

    Summary: Polyphosphate is present in all eukaryotes, but little is known about its function. Here, we describe how Dictyostelium uses polyphosphate as a signal to initiate development.

  • RESEARCH ARTICLE
    Mroh1, a lysosomal regulator localized by WASH-generated actin
    Peter A. Thomason, Jason S. King, Robert H. Insall
    Journal of Cell Science 2017 130: 1785-1795; doi: 10.1242/jcs.197210

    Highlighted Article: An unusual FACS-based screen using Dictyostelium identifies Mroh1 – a conserved protein with HEAT repeats – as a WASH and F-actin target that is important for constitutive exocytosis of lysosomes.

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