Hydrogen peroxide catalase and

D-lactate dehydrogenase and, 271 lipoamide dehydrogenase and, 126 NADH dehydrogenase and, 206 succinate dehydrogenase and, 247 thioredoxin reductase and, 147, 148 Ethyl hydrogen peroxide, catalase and, 391-392, 395 iV-Ethylmaleimide c> tochrome b, reductase and, 163,... 

Methylflavin adenine dinucleotide, lipoamide dehydrogenase and, 125 Methyl hydrogen peroxide, catalase and, 390-391, 398, 405... 

Catalase living tissues of plants and animals hydrogen peroxide HjO and inactive molecular O, 70... 

S. Akgol and E. Dinckaya, A novel biosensor for specific determination of hydrogen peroxide catalase enzyme electrode based on dissolved oxygen probe. Talanta 48, 363-367 (1999). 

Influence of catalase activity and electrical conductivity. Parallel to the determination of the oxygen activity. Beck and co-workers 38> investigated the activity for the decomposition of hydrogen peroxide by various chelates. In each case, 1 mg of freshly precipitated pigment was added to 1% hydrogen peroxide solution and the velocity of oxygen evolution was determined volumetri-cally. The results summarized in Table 5 show no correlation between electro-catalytic activity and catalase activity. 

Pack, M. Y., Vedamuthu, E. R., Sandine, W. E. andElliker, P. R. 1968. Hydrogen peroxide-catalase milk treatment for enhancement and stabilization of diacetyl in lactic starter cultures. J. Dairy Sci. 51, 511-516. 

New europium probes have been presented that can indicate changes in hydrogen peroxide concentration and are applicable for time-resolved imaging. As H2O2 is a product of the activity of almost all oxidases, quantitative assays for different substrates, e.g glucose, or the determination of the activity of the respective oxidases can be carried out. On the other hand, peroxidases and catalases consume H2O2, which can also be monitored via the europium tetracycline probe and can therefore be used for the imaging of ELIS As performed in microwell plates. 

Whittenbury, R. 1964. Hydrogen peroxide formation and catalase activity in the lactic acid bacteria. J. Gen. Microbiol. 35, 13-26. 

Burk D, Woods M. Hydrogen peroxide, catalase, glutathione peroxidase, quinones, nordihydroguaiaretic acid, and phosphopyridine nucleotides in relation to x-ray action on cancer cells. RadiatRes 1963 3(Suppl) 212 16. 

There is nothing accidental about catalase. If it was present on the early Earth, before photosynthesis, then there must have been hydrogen peroxide too, and in abundance. This is counter-intuitive, to say the least. Is it really credible that the early Earth could have been so rich in hydro-gen peroxide that there was a selective pressure for the evolution of catalase ... 

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