Actinomycete-like proteasomes in a Gram-negative bacterium.
Cultivation-independent proteogenomic exploration of mine-drainage biofilm has revealed proteasomes in Gram-negative bacteria of the Nitrospirae phylum (Leptospirillum group II) dominating this acidophilic community. Most probably, the proteasome genes were acquired from actinobacteria, the only eubacteria previously known to contain proteasomes. In addition, this study shows that the proteasome and the evolutionarily related ATP-dependent protease HslVU (also known as ClpQY) are not mutually exclusive in prokaryotes.
De Mot
René
R
Centre of Microbial and Plant Genetics, Department of Microbial and Molecular Systems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, B-3001 Heverlee-Leuven, Belgium. rene.demot@biw.kuleuven.be
D039903:Actinobacteria / Q000201:enzymology*; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D018441:Biofilms / Q000254:growth & development*; D017753:Ecosystem; D019143:Evolution, Molecular; D022761:Gene Transfer, Horizontal; D016680:Genome, Bacterial; D023281:Genomics; D006090:Gram-Negative Bacteria / Q000145:classification / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development; D006863:Hydrogen-Ion Concentration; D046988:Proteasome Endopeptidase Complex / Q000235:genetics / Q000378:metabolism; D020543:Proteome
D001426:Bacterial Proteins; D020543:Proteome; D046988:Proteasome Endopeptidase Complex