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Journal of Bacteriology, March 2006, p. 2275-2279, Vol. 188, No. 6
0021-9193/06/$08.00+0     doi:10.1128/JB.188.6.2275-2279.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Global Gene Expression Analysis of Iron-Inducible Genes in Magnetospirillum magneticum AMB-1

Takeyuki Suzuki, Yoshiko Okamura, Ronie J. Calugay, Haruko Takeyama, and Tadashi Matsunaga*

Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan

Received 20 September 2005/ Accepted 5 December 2005

Iron uptake systems were identified by global expression profiling of Magnetospirillum magneticum AMB-1. feo, tpd, and ftr, which encode ferrous iron transporters, were up-regulated under iron-rich conditions. The concomitant rapid iron uptake and magnetite formation suggest that these uptake systems serve as iron supply lines for magnetosome synthesis.

* Corresponding author. Mailing address: Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, Japan 184-8588. Phone: 81-42-388-7020. Fax: 81-42-385-7713. E-mail: tmatsuna{at}cc.tuat.ac.jp.

Journal of Bacteriology, March 2006, p. 2275-2279, Vol. 188, No. 6
0021-9193/06/$08.00+0     doi:10.1128/JB.188.6.2275-2279.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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