Synthesis of bacterial magnetic particles during cell cycle of Magnetospirillum magneticum AMB-1

Chen Dong Yang, Haruko Takeyama, Tsuyoshi Tanaka, Aki Hasegawa, Tadashi Matsunaga

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We investigated the relationship between the synthesis of bacterial magnetic particles (BMPs) and the transcription of magA gene-encoding iron transport protein using synchronous culture of Magnetospirillum magneticum AMB-1. Synchronously cultured cells were subjected to transmission electron microscopic observation and fluorescence in situ hybridization. The average number of BMPs slowly increased in the cell with increasing cell size. A sharp increase in BMPs occurred just before cell division and resulted in maximum BMP production of 30 particles/cell. The transcription of magA was regulated immediately before and after cell division.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalApplied Biochemistry and Biotechnology - Part A Enzyme Engineering and Biotechnology
Publication statusPublished - 2001 May 23



  • Bacterial magnetic particle
  • Cell cycle
  • Magnetospirillum magneticum AMB-1
  • Synchronous culture
  • magA gene

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology

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