| Effects of static magnetic field on magnetosome formation and expression of mamA, mms13, mms6 and magA in Magnetospirillum magneticum AMB-1. | |
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MedLine Citation:
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PMID: 19165820 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Magnetotactic bacteria produce nanometer-size intracellular magnetic crystals. The superior crystalline and magnetic properties of magnetosomes have been attracting much interest in medical applications. To investigate effects of intense static magnetic field on magnetosome formation in Magnetospirillum magneticum AMB-1, cultures inoculated with either magnetic or non-magnetic pre-cultures were incubated under 0.2 T static magnetic field or geomagnetic field. The results showed that static magnetic field could impair the cellular growth and raise C(mag) values of the cultures, which means that the percentage of magnetosome-containing bacteria was increased. Static magnetic field exposure also caused an increased number of magnetic particles per cell, which could contribute to the increased cellular magnetism. The iron depletion in medium was slightly increased after static magnetic field exposure. The linearity of magnetosome chain was also affected by static magnetic field. Moreover, the applied intense magnetic field up-regulated mamA, mms13, magA expression when cultures were inoculated with magnetic cells, and mms13 expression in cultures inoculated with non-magnetic cells. The results implied that the interaction of the magnetic field created by magnetosomes in AMB-1 was affected by the imposed magnetic field. The applied static magnetic field could affect the formation of magnetic crystals and the arrangement of the neighboring magnetosome. |
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Authors:
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Xiaoke Wang; Likun Liang |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Bioelectromagnetics Volume: 30 ISSN: 1521-186X ISO Abbreviation: Bioelectromagnetics Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-04-08 Completed Date: 2009-05-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8008281 Medline TA: Bioelectromagnetics Country: United States |
Other Details:
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Languages: eng Pagination: 313-21 Citation Subset: IM |
Copyright Information:
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Copyright 2009 Wiley-Liss, Inc. |
Affiliation:
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Weifang Medical University, Weifang, China. wangxiaoke1962@yahoo.com.cn |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bacterial Proteins
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genetics* Genes, Bacterial Iron / metabolism Magnetics* Magnetospirillum / metabolism*, radiation effects Microscopy, Electron, Transmission Organelles / ultrastructure* |
| Chemical | |
Reg. No./Substance:
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0/Bacterial Proteins; 7439-89-6/Iron |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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