However, others have proposed that cAMP governs the hierarchical regulation of many non-glucose sugars. Previously, the preferential utilization of L-arabinose over D-xylose was found to result from transcriptional crosstalk. The metabolism of these sugars is regulated in a hierarchical manner, where lactose is the preferred sugar, followed by L-arabinose, and then D-xylose. In this work, we investigated the mechanism of catabolite repression in the bacterium Escherichia coli during growth on lactose, L-arabinose, and D-xylose. However, less is known about the mechanism for catabolite repression by these non-glucose sugars. While glucose provides the canonical example, many other sugars are also known to induce catabolite repression. New York: Raven Press.Catabolite repression refers to the process where the metabolism of one sugar represses the genes involved in metabolizing another sugar. (eds.), Advances in cyclic nucleotide research, vol. Role of cyclic AMP in bacteria, in press. Cyclic adenosine monophosphate in bacteria. The genetic control and cytoplasmic expression of “inducibility” in the synthesis of β-galactosidase by E. Role of inducer exclusion in preferential utilization of glucose over melibiose in diauxic growth of Escherichia coli. Okada, T., Ueyama, K., Niiya, S., Kanazawa, H., Futai, M., Tsuchiya, T. Biochemical and Biophysical Research Communications, 18:664–674. Preferential transcription of the lactose operon during the diauxic growth of Escherichia coli. Glucose effects: Inducer exclusion and repression, pp. Biochemical and Biophysical Research Communications 59:125–132.
Inapparent correlation between guanosine tetraphosphate levels and RNA contents in Escherichia coli.
Biochemical and Biophysical Research Communications 24:588–592. Synthesis of enzymes of the lactose operon during diauxic growth of Escherichia coli. New York, London: Academic Press.Įpstein, W., Naono, S., Gros, F. Filter paper disk techniques for assaying radioactive macromolecules, pp.
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