The protease from the archaeon Thermoplasma acidophilum (TaLon) is composed of an N-terminal AAA+ domain and a C-terminal Lon protease domain. The AAA+ domain is interrupted by a transmembrane domain. TaLon was found to be membrane-localised in Thermoplasma acidophilum and when over-expressed in E. coli. Recombinant TaLon was solubilised from E. coli membranes and purified as homooligomeric complex. TaLon displayed nucleotide-independent peptidase, ATP-dependent protease and a robust unfoldase activity. Mutagensis of conserved AAA+ residues revealed insights into the intramolecular regulation of TaLon.
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The protease from the archaeon Thermoplasma acidophilum (TaLon) is composed of an N-terminal AAA+ domain and a C-terminal Lon protease domain. The AAA+ domain is interrupted by a transmembrane domain. TaLon was found to be membrane-localised in Thermoplasma acidophilum and when over-expressed in E. coli. Recombinant TaLon was solubilised from E. coli membranes and purified as homooligomeric complex. TaLon displayed nucleotide-independent peptidase, ATP-dependent protease and a robust unfoldase a...
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