Metabolite gene regulation: imidazole and imidazole derivatives which circumvent cyclic adenosine 3',5'-monophosphate in induction of the Escherichia coli L-arabinose operon.

Published

Journal Article

Imidazole, histidine, histamine, histidinol phosphate, urocanic acid, or imidazolepropionic acid were shown to induce the L-arabinose operon in the absence of cyclic adenosine 3',5'-monophosphate. Induction was quantitated by measuring the increased differential rate of synthesis of L-arabinose isomerase in Escherichia coli strains which carried a deletion of the adenyl cyclase gene. The crp gene product (cyclic adenosine 3',5'-monophosphate receptor protein) and the araC gene product (P2) were essential for induction of the L-arabinose operon by imidazole and its derivatives. These compounds were unable to circumvent the cyclic adenosine 3',5'-monophosphate in the induction of the lactose or the maltose operons. The L-arabinose regulon was catabolite repressed upon the addition of glucose to a strain carrying an adenyl cyclase deletion growing in the presence of L-arabinose with imidazole. These results demonstrated that several imidazole derivatives may be involved in metabolite gene regulation (23).

Full Text

Duke Authors

Cited Authors

  • Kline, EL; Bankaitis, VA; Brown, CS; Montefiori, DC

Published Date

  • February 1, 1980

Published In

Volume / Issue

  • 141 / 2

Start / End Page

  • 770 - 778

PubMed ID

  • 6245056

Pubmed Central ID

  • 6245056

International Standard Serial Number (ISSN)

  • 0021-9193

Language

  • eng

Conference Location

  • United States