The biomineralization of magnetosomes in Magnetospirillum gryphiswaldense

Int Microbiol. 2002 Dec;5(4):209-14. doi: 10.1007/s10123-002-0086-8. Epub 2002 Aug 22.


Magnetotactic bacteria (MTB) are major constituents of natural microbial communities in sediments and chemically stratified water columns. The ability of MTB to migrate along magnetic field lines is based on specific intracellular structures, the magnetosomes, which, in most MTB, are nanometer-sized, membrane-bound magnetic particles consisting of the iron mineral magnetite (Fe(3)O(4)). A broad diversity of morphological forms has been found in various MTB. The unique characteristics of bacterial magnetosomes have attracted a broad interdisciplinary research interest. The magnetosome membrane (MM) in Magnetospirillum gryphiswaldense contains a number of specific Mam proteins. Several mam genes were analyzed and assigned to different genomic regions. Many of the Mam proteins are highly conserved in other MTB but display low sequence similarity to any proteins from nonmagnetic organisms.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Bacterial Proteins / chemistry
  • Bacterial Proteins / metabolism
  • Crystallization
  • Ecology
  • Ferrosoferric Oxide
  • Genome, Bacterial
  • Iron / chemistry*
  • Iron / metabolism
  • Magnetics
  • Models, Biological
  • Models, Genetic
  • Organelles / metabolism
  • Organelles / ultrastructure
  • Oxides / chemistry*
  • Oxides / metabolism
  • Rhodospirillaceae / genetics
  • Rhodospirillaceae / metabolism*
  • Rhodospirillaceae / ultrastructure*


  • Bacterial Proteins
  • Oxides
  • Iron
  • Ferrosoferric Oxide