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    Eukaryote polyphosphate kinases: is the 'Kornberg' complex ubiquitous?

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    Authors
    Hooley, Paul
    Whitehead, Michael P.
    Brown, Michael R. W.
    Issue Date
    2008
    
    Metadata
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    Abstract
    Polyphosphate (poly P) is a polymer of up to several hundred phosphate residues and is important to a variety of cell processes. The main poly P synthetic enzyme in many bacteria is poly P kinase 1 (PPK1), which until recently had been detected among eukaryotes in some protists only. There is now evidence for the presence in several other eukaryotes of PPK1 homologues and also a second bacteria-type enzyme, PPK2. The latest genome databases reveal that the 'Kornberg' enzyme complex of three actin-related proteins, termed DdPPK2 in Dictyostelium discoideum, might also be ubiquitous in eukaryotes. Owing to the intimate association of poly P synthesis with the formation of structural fibres, this ubiquity indicates a central role for this molecule in the evolution of eukaryotic cells.
    Citation
    Trends in biochemical sciences, 33 (12):577-82
    Publisher
    Elsevier
    Journal
    Trends in biochemical sciences
    URI
    http://hdl.handle.net/2436/117150
    DOI
    10.1016/j.tibs.2008.09.007
    PubMed ID
    18938082
    Type
    Journal article
    Language
    en
    ISSN
    0968-0004
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.tibs.2008.09.007
    Scopus Count
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    Faculty of Science and Engineering

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