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Literature DB >> 12147514

Accumulation of inorganic polyphosphate in phoU mutants of Escherichia coli and Synechocystis sp. strain PCC6803.

Tomohiro Morohoshi¹, Tatsuya Maruo, Yoko Shirai, Junichi Kato, Tsukasa Ikeda, Noboru Takiguchi, Hisao Ohtake, Akio Kuroda.

Abstract

The biological process for phosphate (P(i)) removal is based on the use of bacteria capable of accumulating inorganic polyphosphate (polyP). We obtained Escherichia coli mutants which accumulate a large amount of polyP. The polyP accumulation in these mutants was ascribed to a mutation of the phoU gene that encodes a negative regulator of the P(i) regulon. Insertional inactivation of the phoU gene also elevated the intracellular level of polyP in Synechocystis sp. strain PCC6803. The mutant could remove fourfold more P(i) from the medium than the wild-type strain removed.

Entities: Chemical Gene Species

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Year: 2002 PMID： 12147514 PMCID： PMC124021 DOI： 10.1128/AEM.68.8.4107-4110.2002

Source DB: PubMed Journal: Appl Environ Microbiol ISSN： 0099-2240 Impact factor: 4.792

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