doc2003
Forum Senior
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The destruction of H2O2 which is a mildly toxic reduced oxygen species, is catalyzed by which of the following enzymes?
1-cytochrome oxidase
2-catalase
3-nitric oxidase synthase (inducible)
4-superoxide dismutase
5-xanthine oxidase
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| phuluong2k
Forum Fanatic
Topics: 714
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2 catalase
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| sobia naeem
Forum Elite
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i go for catalase too
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| mjl1717
Forum Hero
Topics: 955
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I) H2O2 +"catalse" :arrow: H2O and 02
II) O2 +"superoxide dismutase" :arrow: H2O2
III) H2O2 +"myeloperoxidase"* :arrow: HOCl(bleach) +OH
*Myeloperoxidase is most potent and is a lysosomal enzyme.
Another distractor-cytochrome oxidase also called cytochrome a+a3.
In this complex reaction electrons, protons, Molecular Oxygen and porphyrin ring, Fe and copper produce water.
NO synthetase is increase in response to infections/ in the macrophage its calcium independent.(its stimulated by lipopolysaccharide/gamma interferon
*Glutathione peroxidase can neutralize catlase also!
Xanthine Oxidase -thats too easy. :idea:
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