Evidence against the presence of 3',5'-cyclic adenosine monophosphate and relevant enzymes in Lactobacillus plantarum
- PMID: 4342815
- PMCID: PMC251427
- DOI: 10.1128/jb.112.1.421-426.1972
Evidence against the presence of 3',5'-cyclic adenosine monophosphate and relevant enzymes in Lactobacillus plantarum
Abstract
Analysis of cells of Lactobacillus plantarum, starved or undergoing induction, showed no 3', 5'-cyclic adenosine monophosphate (cAMP). Neither adenyl cyclase nor 3', 5'-cAMP phosphodiesterase was detected in extracts. Extracts of L. plantarum did not inhibit these two enzymes of Escherichia coli K-12, strain W1435. Incubation of adenosine triphosphate (ATP)-U-(14)C with cells or various cell-free fractions of L. plantarum did not produce labeled 3', 5'-cAMP. Of various 3', 5'-cyclic and acyclic nucleotides tested, only 3', 5'-cAMP, ATP, and yeast adenylic acid stimulated l-arabinose isomerase. Yeast adenylic acid was two to four times as effective as 3', 5'-cAMP or ATP. 2', 3'-cAMP was not effective.
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