different o2 tolerances

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Distribution of superoxide dismutase, catalase and peroxidase in procaryotes with different O 2 tolerances. Group Superoxide dismutase Catalase Peroxidase Obligate aerobes and most facultative anaerobes (e.g. Enterics) + + - Most aerotolerant anaerobes (e.g. Streptococci) + - + Obligate anaerobes (e.g. Clostridia, Methanogens, Bacteroides) - - -

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Distribution of superoxide dismutase, catalase and peroxidase in procaryotes with different O2 tolerances.

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Distribution of superoxide dismutase, catalase and peroxidase in procaryotes with different O2 tolerances.

GroupSuperoxide dismutaseCatalasePeroxidase

Obligate aerobes and most facultative anaerobes (e.g. Enterics) ++-

Most aerotolerant anaerobes (e.g. Streptococci)+-+

Obligate anaerobes (e.g. Clostridia, Methanogens, Bacteroides)---