Membrane vesicles traffic signals and facilitate group activities in a prokaryote
Article Abstract:
Pseudomonas quinolone signal actively mediates its own packaging and the packaging of other antimicrobial quinoloines produced by Pseudomonas aeruginosa into vesicles. These findings illustrate that a prokaryote possesses a signal trafficking system with features common to those used by higher organisms and outlines a novel mechanism for delivery of a signal critical for coordinating group behaviour in Pseudomonas aeruginosa.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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Archaea predominate among ammonia-oxidizing prokaryotes in soils
Article Abstract:
Archaeal ammonia oxidizers are more abundant in soils than their well-known bacterial counterparts and hence the abundance of the gene encoding a subunit of the key enzyme ammonia monooxygenase (amoA) is investigated in 12 pristine and agricultural soils of three climatic zones. The results have shown that crenarchaeota might be the most abundant ammonia-oxidizing organisms in soil ecosystems on Earth.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Regulation of mycobacterium tuberculosis cell envelop composition and virulence by intramembrane proteolysis
Article Abstract:
A study is conducted to show that a previously uncharacterized Mycobacterium tuberculosis site two protease (S2P) homologue regulates Mycobacterium tuberculosis cell envelope composition, growth in vivo, and persistence in vivo. The results establish that regulated intramembrane proteolysis is a conserved mechanism controlling membrane composition in prokaryotes.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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