Enterobactin synthetase-catalyzed formation of P1,P 3-diadenosine-5′-tetraphosphate

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The EntE enzyme, involved in the synthesis of the iron siderophore enterobactin, catalyzes the adenylation of 2,3-dihydroxybenzoic acid, followed by its transfer to the phosphopantetheine arm of holo-EntB, an aryl carrier protein. In the absence of EntB, EntE catalyzes the formation of Ap 4A, a molecule that is implicated in regulating cell division during oxidative stress. We propose that the expression of EntE during iron starvation produces Ap4A to slow growth until intracellular iron stores can be restored.

Original languageEnglish (US)
Pages (from-to)10827-10829
Number of pages3
Issue number46
Publication statusPublished - Nov 24 2009


ASJC Scopus subject areas

  • Biochemistry

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