alexa Shallow breathing: bacterial life at low O(2).
Molecular Biology

Molecular Biology

Journal of Cell Science & Therapy

Author(s): Morris RL, Schmidt TM, Morris RL, Schmidt TM

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Abstract Competition for molecular oxygen (O(2)) among respiratory microorganisms is intense because O(2) is a potent electron acceptor. This competition leads to the formation of microoxic environments wherever microorganisms congregate in aquatic, terrestrial and host-associated communities. Bacteria can harvest O(2) present at low, even nanomolar, concentrations using high-affinity terminal oxidases. Here, we report the results of surveys searching for high-affinity terminal oxidase genes in sequenced bacterial genomes and shotgun metagenomes. The results indicate that bacteria with the potential to respire under microoxic conditions are phylogenetically diverse and intriguingly widespread in nature. We explore the implications of these findings by highlighting the importance of microaerobic metabolism in host-associated bacteria related to health and disease.
This article was published in Nat Rev Microbiol and referenced in Journal of Cell Science & Therapy

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