Endogenous superoxide is a key effector of the oxygen sensitivity of a model obligate anaerobe [Microbiology]

It has been unclear whether superoxide and/or hydrogen peroxide play important roles in the phenomenon of obligate anaerobiosis. This question was explored using Bacteroides thetaiotaomicron, a major fermentative bacterium in the human gastrointestinal tract. Aeration inactivated two enzyme families—[4Fe-4S] dehydratases and nonredox mononuclear iron enzymes—whose homologs, in contrast, remain active...

https://ift.tt/2GtTRKA