Factors affecting catalase level and sensitivity to hydrogen peroxide in Escherichia coli
Autor: | Y Henis, Y Yoshpe-Purer |
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Rok vydání: | 1976 |
Předmět: |
inorganic chemicals
Sonication Micrococcus medicine.disease_cause Applied Microbiology and Biotechnology chemistry.chemical_compound Escherichia coli medicine Hydrogen peroxide chemistry.chemical_classification Ecology biology Temperature Substrate (chemistry) Drug Resistance Microbial Hydrogen Peroxide Catalase biology.organism_classification Culture Media Enzyme chemistry Biochemistry biology.protein Composition (visual arts) Toluene Research Article Food Science Biotechnology |
Zdroj: | Applied and Environmental Microbiology. 32:465-469 |
ISSN: | 1098-5336 0099-2240 |
Popis: | Composition of the culture medium, growth phase, and temperature play important roles in the sensitivity of Escherichia coli to H2O2. The medium and growth phase affected the sensitivity of the cells to H2O2 by modifying the amount of catalase synthesized by them, whereas the effect of temperature was due to the thermolability of the enzyme. Since catalase is unstable in the presence of its substrate, the correlation between the catalase level in the cells and their sensitivity to H2O2 could be observed only when the H2O2 concentration was not excessive in proportion to the amount of catalase. |
Databáze: | OpenAIRE |
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