Abstract
During starvation for each of four amino acids, relaxed and stringent strains of Escherichia coli showed exponential decay of pulse-labeled unstable messenger ribonucleic acid (mRNA), with RNA degraded more slowly in the relaxed strain. An additional unique difference was observed during starvation for methionine: the relaxed strain showed non-exponential decay of mRNA, with a survival curve similar to that of an aging process.
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