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    The sound of silence: Activating silent biosynthetic gene clusters in marine microorganisms

    Access Status
    Open access via publisher
    Authors
    Reen, F.
    Romano, S.
    Dobson, A.
    O'Gara, Fergal
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Reen, F. and Romano, S. and Dobson, A. and O'Gara, F. 2015. The sound of silence: Activating silent biosynthetic gene clusters in marine microorganisms. Marine Drugs. 13 (8): pp. 4754-4783.
    Source Title
    Marine Drugs
    DOI
    10.3390/md13084754
    School
    School of Biomedical Sciences
    URI
    http://hdl.handle.net/20.500.11937/20558
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 by the authors; licensee MDPI, Basel, Switzerland. Unlocking the rich harvest of marine microbial ecosystems has the potential to both safeguard the existence of our species for the future, while also presenting significant lifestyle benefits for commercial gain. However, while significant advances have been made in the field of marine biodiscovery, leading to the introduction of new classes of therapeutics for clinical medicine, cosmetics and industrial products, much of what this natural ecosystem has to offer is locked in, and essentially hidden from our screening methods. Releasing this silent potential represents a significant technological challenge, the key to which is a comprehensive understanding of what controls these systems. Heterologous expression systems have been successful in awakening a number of these cryptic marine biosynthetic gene clusters (BGCs). However, this approach is limited by the typically large size of the encoding sequences. More recently, focus has shifted to the regulatory proteins associated with each BGC, many of which are signal responsive raising the possibility of exogenous activation. Abundant among these are the LysR-type family of transcriptional regulators, which are known to control production of microbial aromatic systems. Although the environmental signals that activate these regulatory systems remain unknown, it offers the exciting possibility of evoking mimic molecules and synthetic expression systems to drive production of potentially novel natural products in microorganisms. Success in this field has the potential to provide a quantum leap forward in medical and industrial bio-product development. To achieve these new endpoints, it is clear that the integrated efforts of bioinformaticians and natural product chemists will be required as we strive to uncover new and potentially unique structures from silent or cryptic marine gene clusters.

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