Requirement of adenosine-3',5'-cyclic monophosphate for L-arabinose isomerase synthesis in Escherichia coli

Adenosine-3', 5'-cyclic monophosphate (cyclic AMP) is essential for the synthesis of l-arabinose isomerase in Escherichia coli. Cyclic AMP appears to be required for the transcription of deoxyribonucleic acid into messenger ribonucleic acid (RNA), since the enzyme synthesis is not observed in induced cells to which cyclic AMP is added after messenger RNA synthesis is arrested by rifampin or after inducer removal.

Requirement of adenosine 3',5'-cyclic phosphate for formation of the phage lambda receptor in Escherichia coli

Adenosine 3',5'-cyclic phosphate is indispensable for formation of the phage lambda receptor in Escherichia coli K-12.

Genetic behavior of R factors in Vibrio cholerae

The fi(+) and fi(-) R factors are unstable in Vibrio cholerae even on selective media containing antibiotics, although a temperature-sensitive kanamycin resistance factor and its recombinants are stably maintained in V. cholerae at low temperatures.

Requirement of adenosine 3', 5'-cyclic phosphate for flagella formation in Escherichia coli and Salmonella typhimurium

Adenosine-3',5'-cyclic phosphate (cyclic AMP) is absolutely required for flagella formation and, hence, motility in cyclic AMP-deficient mutants of Escherichia coli and Salmonella typhimurium.

Isolation of gibberellin A8-glucoside from shoot apices of Althaea rosea

Gibberellin A8-glucoside has been isolated from shoot apices of Althaea rosea. It showed a weak growth-promoting activity on rice seedlings and oat mesocotyl sections but did not induce germination of lettuce seeds in darkness.