Chapter 11. Magnetism and Molecular Biology of Magnetic Iron Minerals in Bacteria

  1. Astrid Sigel3,
  2. Helmut Sigel3 and
  3. Roland K. O. Sigel4
  1. Richard B. Frankel1,
  2. Sabrina Schübbe2 and
  3. Dennis A. Bazylinski2

Published Online: 1 JUN 2010

DOI: 10.1002/9780470986325.ch11

Biomineralization: From Nature to Application, Volume 4

Biomineralization: From Nature to Application, Volume 4

How to Cite

Frankel, R. B., Schübbe, S. and Bazylinski, D. A. (2008) Magnetism and Molecular Biology of Magnetic Iron Minerals in Bacteria, in Biomineralization: From Nature to Application, Volume 4 (eds A. Sigel, H. Sigel and R. K. O. Sigel), John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470986325.ch11

Editor Information

  1. 3

    Department of Chemistry, Inorganic Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland

  2. 4

    Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland

Author Information

  1. 1

    Department of Physics, California Polytechnic State University, San Luis Obispo, CA 93407, USA

  2. 2

    School of Life Sciences, University of Nevada, Las Vegas, NV 89154, USA

Publication History

  1. Published Online: 1 JUN 2010
  2. Published Print: 2 JAN 2008

ISBN Information

Print ISBN: 9780470035252

Online ISBN: 9780470986325

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Keywords:

  • electron holography;
  • greigite;
  • magnetite;
  • magnetosomes;
  • magnetotactic bacteria;
  • prokaryotes;
  • single magnetic domain

Summary

Magnetotactic bacteria contain magnetosomes that comprise a permanent magnetic dipole in each cell. The magnetosomes consist of nanoscale crystals of the magnetic iron minerals magnetite (Fe3O4) or greigite (Fe3S4) enclosed in a membrane and are usually arranged in one or more chains. The magnetosome membrane is thought to control the nucleation, growth, and orientation of the magnetosome crystal and hence regulates the magnetic properties of the cell. In this chapter we review the magnetic properties of magnetosomes and describe recent developments in the genetics of magnetosome chain formation.