An H2O2-decomposing system in cultured tobacco cells.
نویسندگان
چکیده
منابع مشابه
Sulfate transport in cultured tobacco cells.
Sulfate transport by tobacco (Nicotiana tabacum L. var. Xanthi) cells cultured on either l-cysteine or sulfate as a sole sulfur source was measured. The transport rate on either sulfur source was low during pre-exponential growth, increased during exponential growth, and was maximal in late exponential cells. The initial increase in transport rate was correlated with a decline in the intracellu...
متن کاملCysteine metabolism in cultured tobacco cells.
Transported l-[(35)S]cysteine was rapidly metabolized by cultured tobacco cells when supplied to the cells at 0.02 millimolar or 0.5 millimolar. The internal cysteine pool was expandable to approximately 2400 nmoles per gram fresh weight.The (35)S label derived from cysteine was found in several metabolites. The amount of label in glutathione and sulfate was directly proportional to the interna...
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Reactive oxygen species (ROS) generated during pathological events, such as inflammation and ischemia-reperfusion, activates both proapoptotic and antiapoptotic signaling programs in endothelial cells. Because cholesterol-rich, plasma membrane rafts serve as platforms for organizing and integrating signaling transduction processes, we asked whether these membrane regions play a mechanistic role...
متن کاملIsolation and Optimization of Tobacco Decomposing Bacillus and Lactobacillus Sp.
Three bacteria from a tobacco industry effluent and one from a sewage sample were isolated on a medium comprising of 1% tobacco powder as sole source of nutrients. Bacteria isolated from the industrial waste water were identified as Bacillus cereus, B. alvei and B. circulans. While, Lactobacillus sp. was isolated from the sewage sample. The bacteria were optimized for various growth conditions ...
متن کاملCysteine transport into cultured tobacco cells.
Cysteine transport by tobacco cells (Nicotiana tabacum L. var. Xanthi) cultured on liquid B-5 medium was examined.Transport was linear with time or amount of tissue and had a pH optimum of 4.5. Cysteine transport over a wide concentration range was biphasic. The isotherm, for descriptive convenience, was divided into two segments both of which obeyed Michaelis-Menten kinetics. The Km for high a...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1990
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.54.2003