Protein-mediated morphological regulation of magnetite crystal in magnetotactic bacteria

A. Arakaki, A. Yamagishi, Tadashi Matsunaga

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

MatsunagaMagnetotactic bacteria are microorganisms that produce magnetic particles surrounded by a lipid bilayer membrane with proteins. Since the size and morphology of these particles are uniform, it is thought that magnetic particles are morphologically controlled within the bacteria. The Mms6 protein was isolated from the surface of cubo-octahedral magnetic particles formed in the Magnetospirillum magneticum strain AMB-1. By using Mms6, cubo-octahedral magnetic particles were synthesized in vitro. Furthermore, the analysis of the mms6 gene-deletion mutant of magnetotactic bacteria indicated that Mms6 plays a role in the in vivo regulation of magnetic crystal morphology during crystal growth. Thus, Mms6 can be used to synthesize morphologically controlled magnetic materials under normal temperature and pressure conditions.

Original languageEnglish
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume61
Issue numberSUPLL.1
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Biomineralization
  • Magnetic particle
  • Magnetotactic bacteria
  • Mms6 protein
  • Morphological control

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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