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 language | English |
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Pages (from-to) | 1231-1234 |
Number of pages | 3 |
Journal | FEBS Letters |
Volume | 584 |
Issue number | 6 |
DOIs | |
Publication status | Published - Mar 2010 |
Keywords
- 2-Oxoacid dehydrogenase complex
- Acetoin
- Archaea
- Metabolism
- Thermophile