PMID: 2507529Oct 1, 1989Paper

Apparent phosphate retrieval system in Bacillus cereus

Journal of Bacteriology
P H GuddalC Little

Abstract

Bacillus cereus secretes three different phospholipases C. We studied the effect of Pi levels in the growth medium on the production of these exoenzymes. Production of both phosphatidylcholine-preferring phospholipase C and sphingomyelinase C was repressed by Pi in the growth medium, whereas production of phosphatidylinositol phospholipase C was unaffected. We also found that B. cereus secretes a phosphate-repressed alkaline phosphatase activity. Together with a previously reported highly efficient, active uptake system for Pi, these three phosphate-repressed exoenzyme activities seem to be part of a phosphate retrieval mechanism that operates under growth-limiting concentrations of Pi. In natural soil systems, which are the natural habitats of B. cereus, the scarcity of Pi is the major growth-limiting factor. A phosphate-repressed metalloprotease activity was also detected in culture supernatants of B. cereus. It is unclear whether this exoenzyme activity also participates in the proposed phosphate-scavenging system.

References

Aug 1, 1979·Infection and Immunity·M W Stinson, C Hayden
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Citations

Apr 24, 2014·Interdisciplinary Perspectives on Infectious Diseases·Tuula A Peñate MedinaPaavo K J Kinnunen
Nov 23, 2006·Applied Microbiology and Biotechnology·Markus A DurbanUwe T Bornscheuer
Jan 13, 2021·Analytical Methods : Advancing Methods and Applications·Nabangshu SharmaIvanhoe K H Leung
Dec 1, 1993·Microbiological Reviews·C C Häse, R A Finkelstein
Jun 1, 1993·Microbiological Reviews·R W Titball
Nov 7, 1996·Chemical Reviews·Dean E. Wilcox

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