Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1978
Contrary to mutagenesis, lysogenic induction produced by chemical carcinogens occurs in the major... more Contrary to mutagenesis, lysogenic induction produced by chemical carcinogens occurs in the majority of a population of lysogenic cells. Such a mass effect can therefore be measured at the biochemical level using an E. coil tester strain in which the galactose operon has been put under the negative control of the k repressor. In this publication we show that galactokinase synthesis is turned on by aflatoxin B1 metabolites within an hour after treatment of the tester bacteria. Such a biochemical assay provides a useful means for identifying potential chemical carcinogens.
Heavy metal contamination in soil and water is a big threat to our environment now a day. The co... more Heavy metal contamination in soil and water is a big threat to our environment now a day. The con‐ sumption of these metals by animals through drinking water and by plants through soil may herm their physio‐ logical activities. Many years have already been spend to find the mode of action of these metals in living systems and several avenues have been revealed to understand their action. They may inactivate enzymes, may inhibit transport molecules in and out of cell and lots more. Living cells also have adopted many pathways to resist these harmful metals. In recent days researchers are trying to find bacteria which can withstand the heavy metal con‐ tamination and not only that they can also reduce the harmful activity of these metals also by several mechanism. These bacteria will act as bioremediation agents against heavy metals in the environment to reduce the adverse effect of chemical agents. In this review, we will summarize the bacterial species which can resist heavy metals; especially we focused on Zinc, Silver, Palladium, Nickel, Mercury, Arsenic, Chromium, Lead, Copper and Cadmium.
Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1978
Contrary to mutagenesis, lysogenic induction produced by chemical carcinogens occurs in the major... more Contrary to mutagenesis, lysogenic induction produced by chemical carcinogens occurs in the majority of a population of lysogenic cells. Such a mass effect can therefore be measured at the biochemical level using an E. coil tester strain in which the galactose operon has been put under the negative control of the k repressor. In this publication we show that galactokinase synthesis is turned on by aflatoxin B1 metabolites within an hour after treatment of the tester bacteria. Such a biochemical assay provides a useful means for identifying potential chemical carcinogens.
Heavy metal contamination in soil and water is a big threat to our environment now a day. The co... more Heavy metal contamination in soil and water is a big threat to our environment now a day. The con‐ sumption of these metals by animals through drinking water and by plants through soil may herm their physio‐ logical activities. Many years have already been spend to find the mode of action of these metals in living systems and several avenues have been revealed to understand their action. They may inactivate enzymes, may inhibit transport molecules in and out of cell and lots more. Living cells also have adopted many pathways to resist these harmful metals. In recent days researchers are trying to find bacteria which can withstand the heavy metal con‐ tamination and not only that they can also reduce the harmful activity of these metals also by several mechanism. These bacteria will act as bioremediation agents against heavy metals in the environment to reduce the adverse effect of chemical agents. In this review, we will summarize the bacterial species which can resist heavy metals; especially we focused on Zinc, Silver, Palladium, Nickel, Mercury, Arsenic, Chromium, Lead, Copper and Cadmium.
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Papers by Arpan Das
sumption of these metals by animals through drinking water and by plants through soil may herm their physio‐
logical activities. Many years have already been spend to find the mode of action of these metals in living systems
and several avenues have been revealed to understand their action. They may inactivate enzymes, may inhibit
transport molecules in and out of cell and lots more. Living cells also have adopted many pathways to resist these
harmful metals. In recent days researchers are trying to find bacteria which can withstand the heavy metal con‐
tamination and not only that they can also reduce the harmful activity of these metals also by several mechanism.
These bacteria will act as bioremediation agents against heavy metals in the environment to reduce the adverse
effect of chemical agents. In this review, we will summarize the bacterial species which can resist heavy metals;
especially we focused on Zinc, Silver, Palladium, Nickel, Mercury, Arsenic, Chromium, Lead, Copper and Cadmium.
sumption of these metals by animals through drinking water and by plants through soil may herm their physio‐
logical activities. Many years have already been spend to find the mode of action of these metals in living systems
and several avenues have been revealed to understand their action. They may inactivate enzymes, may inhibit
transport molecules in and out of cell and lots more. Living cells also have adopted many pathways to resist these
harmful metals. In recent days researchers are trying to find bacteria which can withstand the heavy metal con‐
tamination and not only that they can also reduce the harmful activity of these metals also by several mechanism.
These bacteria will act as bioremediation agents against heavy metals in the environment to reduce the adverse
effect of chemical agents. In this review, we will summarize the bacterial species which can resist heavy metals;
especially we focused on Zinc, Silver, Palladium, Nickel, Mercury, Arsenic, Chromium, Lead, Copper and Cadmium.