Non-coordinate regulation of RNA synthesis in escherichia coli exposed to 0°C |
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Authors: | Chitrita Guha Hirendra Kumar Das |
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Institution: | (1) School of Life Sciences, Jawaharlal Nehru University, 110067 New Delhi, India;(2) Present address: Department of Muscle Research, Boston Biomedical Research Institute, 02114 Boston, Mass, USA;(3) Present address: School of Environmental Sciences, Jawaharlal Nehru University, 110067 New Delhi, India |
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Abstract: | A non-coordinate mode of regulation of RNA synthesis is observed inEscherichia coli cells during exposure to 0°C. The stable RNA synthesis is preferentially inhibited with simultaneous accumulation of messenger RNA. The species of RNA synthesized at 0°C was determined by several criteria such as sedimentation value in sucrose gradients, DNA-RNA hybridization, half life measurements, protein synthesizing capacity and its functional rate of decay. The mode of regulation of RNA synthesis at 0°C is unique and is distinct from the non-coordinate regulation observed during amino acid starvation under stringent control. |
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