How do aerobic/aerotolerant organisms that cannot produce catalase detoxify hydrogen peroxide?
2007-03-09 07:32:38 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
All organisms growing in the presence of oxygen must have some mechanism for the detoxification of hydorgen peroxide. if not it will die. if an aerobic/aerotolerant organism cannot produce a catalase detoxifying agent, then how does it detox?
2007-03-09 07:57:55 · update #1
Even though certain aerotolerant bacteria such as the lactic acid bacteria lack catalase, they decompose H2O2 by means of peroxidase enzymes which derive electrons from NADH2 to reduce peroxide to H2O. Obligate anaerobes lack superoxide dismutase and catalase and/or peroxidase, and therefore undergo lethal oxidations by various oxygen radicals when they are exposed to O2.
2007-03-09 08:00:48 · answer #1 · answered by MSK 4 · 0⤊ 0⤋
Aerotolerant Organisms
2017-01-12 16:13:47 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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2016-12-05 11:31:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
cld u pls be more clear about the question
2007-03-09 07:52:21 · answer #4 · answered by ANITHA 3 · 0⤊ 0⤋