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Siderophores of Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis.

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Affiliations

  • 1. Department of Microbiology, University of Mississippi Medical Center, Jackson, MS 39216-4505, USA.
      Authors
    • Wilson MK 1
    (1 author)

Biochemical and Biophysical Research Communications, 20 Jul 2006, 348(1):320-325
https://doi.org/10.1016/j.bbrc.2006.07.055 PMID: 16875672 

Abstract 

Three Bacillus anthracis Sterne strains (USAMRIID, 7702, and 34F2) and Bacillus cereus ATCC 14579 excrete two catecholate siderophores, petrobactin (which contains 3,4-dihydroxybenzoyl moieties) and bacillibactin (which contains 2,3-dihydroxybenzoyl moieties). However, the insecticidal organism Bacillus thuringiensis ATCC 33679 makes only bacillibactin. Analyses of siderophore production by previously isolated [Cendrowski et al., Mol. Microbiol. 52 (2004) 407-417] B. anthracis mutant strains revealed that the B. anthracis bacACEBF operon codes for bacillibactin production and the asbAB gene region is required for petrobactin assembly. The two catecholate moieties also were synthesized by separate routes. PCR amplification identified both asbA and asbB genes in the petrobactin producing strains whereas B. thuringiensis ATCC 33679 retained only asbA. Petrobactin synthesis is not limited to the cluster of B. anthracis strains within the B. cereus sensu lato group (in which B. cereus, B. anthracis, and B. thuringiensis are classified), although petrobactin might be prevalent in strains with pathogenic potential for vertebrates.

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Read article at publisher's site: https://doi.org/10.1016/j.bbrc.2006.07.055

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