Discovery of a putative acetoin dehydrogenase complex in the hyperthermophilic archaeon Sulfolobus solfataricus

K. A P Payne, David W. Hough, Michael J. Danson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Like many other aerobic archaea, the hyperthermophile Sulfolobus solfataricus possesses a gene cluster encoding components of a putative 2-oxoacid dehydrogenase complex. In the current paper, we have cloned and expressed the first two genes of this cluster and demonstrate that the protein products form an α2β2 hetero-tetramer possessing the catalytic activity characteristic of the first component enzyme of an acetoin dehydrogenase multienzyme complex. This represents the first report of an acetoin multienzyme complex in archaea, and contrasts with the branched-chain 2-oxoacid dehydrogenase complex activities characterised in two other archaea, Thermoplasma acidophilum and Haloferax volcanii. © 2010 Federation of European Biochemical Societies.
    Original languageEnglish
    Pages (from-to)1231-1234
    Number of pages3
    JournalFEBS Letters
    Volume584
    Issue number6
    DOIs
    Publication statusPublished - Mar 2010

    Keywords

    • 2-Oxoacid dehydrogenase complex
    • Acetoin
    • Archaea
    • Metabolism
    • Thermophile

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