Thiol-stimulated secretion of riboflavin and porphyrins by Escherichia coli

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Abstract

Under aerobic conditions, thioglycerol, dithiothreitol and cysteine stimulated stationaryphase Escherichia coli to secrete riboflavin. Thioglycerol also enhanced the secretion of porphyrins and unidentified yellow pigments. Under anaerobic conditions, thiols failed to stimulate riboflavin secretion, but 5 out of 8 thiols tested caused increased porphyrin excretion. Secretion of these substances is a manifestation of the pleiotropic response of E. coli to reductive stress.

Original languageEnglish
Pages (from-to)243-245
Number of pages3
JournalFEMS Microbiology Letters
Volume27
Issue number2
DOIs
StatePublished - May 1985

ASJC Scopus Subject Areas

  • Microbiology
  • Molecular Biology
  • Genetics

Keywords

  • Enhanced synthesis
  • porphyrins
  • riboflavin

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