Enzymatic basis of thiol-stimulated secretion of porphyrins by Escherichia coli

G. T. Javor, E. F. Febre

Research output: Contribution to journalComment/debatepeer-review

Abstract

1-Thioglycerol (TG) stimulates the synthesis of porphyrin in aerobically growing Escherichia coli. Here the levels of delta-aminolevulinate biosynthetic enzymes in untreated and TG-treated E. coli THU and PUC2 (a mutant of THU which overproduces porphyrins in the presence of thiols) cells were determined. TG treatment elevated the activity of glutamyl-tRNA reductase in both strains. The increased activity was not caused by activation of preexisting enzymes by thiols or by oxidizing agents but was dependent on new protein synthesis.

Original languageEnglish
Pages (from-to)1072-1075
Number of pages4
JournalJournal of Bacteriology
Volume174
Issue number3
DOIs
StatePublished - 1992

ASJC Scopus Subject Areas

  • Microbiology
  • Molecular Biology

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