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Uptake of phosphorus by filamentous bacteria and the role of cation on polyphosphates composition.
Environ Technol
January 2008
University of Bielsko-Biala, Institute of Environmental Protection and Engineering, Willowa Str. 2, 43-309 Bielsko-Biala, Poland.
Many microorganisms have the ability to store phosphorus as polyphosphates in volutin granules. The aim of the research was to characterise the phosphorus sequestered by filamentous microorganisms present in the foam. Also the importance of required cations like potassium and magnesium in the process of phosphorus uptake by filamentous microorganisms was examined.
View Article and Find Full Text PDFNCgl2620 encodes a class II polyphosphate kinase in Corynebacterium glutamicum.
Appl Environ Microbiol
August 2007
Institute of Molecular Microbiology and Biotechnology, Westfalian Wilhelms University Muenster, Correnstr. 3, Muenster, Germany.
Corynebacterium glutamicum is able to accumulate up to 600 mM cytosolic phosphorus in the form of polyphosphate (poly P). Granular poly P (volutin) can make up to 37% of the internal cell volume. This bacterium lacks the classic enzyme of poly P synthesis, class I polyphosphate kinase (PPK1), but it possesses two genes, ppk2A (corresponds to NCgl0880) and ppk2B (corresponds to NCgl2620), for putative class II (PPK2) PPKs.
View Article and Find Full Text PDFDetermination of soluble and granular inorganic polyphosphate in Corynebacterium glutamicum.
Appl Microbiol Biotechnol
October 2006
Institute of Agrosphere (ICG-IV), Research Center Juelich, Juelich, Germany.
Corynebacterium glutamicum forms inorganic polyphosphate (poly P) that may occur as soluble (cytosolic) poly P and/or as volutin granules. A suitable method for monitoring soluble and granular poly P in C. glutamicum was developed and applied to C.
View Article and Find Full Text PDFFormation of volutin granules in Corynebacterium glutamicum.
FEMS Microbiol Lett
February 2005
Institut für Biotechnologie (IBT-1), Forschungszentrum Jülich, D-52425 Jülich, Germany.
Volutin granules are intracellular storages of complexed inorganic polyphosphate (poly P). Histochemical staining procedures differentiate between pathogenic corynebacteria such as Corynebacterum diphtheriae (containing volutin) and non-pathogenic species, such as C. glutamicum.
View Article and Find Full Text PDFA procedure is presented for the isolation of intact polyphosphate (poly P) from "Propionibacterium shermanii." It is demonstrated, by including [32P]poly P during the extraction, that this procedure does not hydrolyze the poly P, and it is shown that two other widely used procedures do cause breakdown of the poly P. The procedure presented allows isolation of three fractions, short-chain poly P which is soluble in trichloroacetic acid, long-chain poly P which is soluble at neutral pH, and long-chain poly P which is present in volutin granules.
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