Synthesis of Bacterial Magnetic Particles During Cell Cycle of Magnetospirillum magneticum AMB-1

  • Chen-Dong Yang
  • Haruko Takeyama
  • Tsuyoshi Tanaka
  • Aki Hasegawa
  • Tadashi Matsunaga
Part of the ABAB Symposium book series (ABAB)


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.

Index Entries

Synchronous culture mini-Tn5 Magnetospirillum magneticum AMB-1 bacterial magnetic particle cell cycle magA gene 


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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Chen-Dong Yang
    • 1
  • Haruko Takeyama
    • 1
  • Tsuyoshi Tanaka
    • 1
  • Aki Hasegawa
    • 1
  • Tadashi Matsunaga
    • 1
  1. 1.Department of BiotechnologyTokyo University of Agriculture and TechnologyKoganei, TokyoJapan

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