| Stimulation of porphyrin production by application of an external magnetic field to a photosynthetic bacterium, Rhodobacter sphaeroides. | |
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MedLine Citation:
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PMID: 16233427 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The effects of an external magnetic field on the production of porphyrin were investigated using Rhodobacter sphaeroides IF012203 under anaerobic-light conditions. Upon application of a 0.13-0.3-T magnetic field, the growth was slightly suppressed and porphyrin extracellular production was activated at both the N and S poles, particularly at the N pole up to about 5.3 times that in the control experiment (6.7 mg/1) (without magnetic filed application). The maximum production was 35.8 mg/1 at the N pole with a magnetic field of 0.3 T. At the same time, the 5-aminolevulinic acid dehydratase (ALAD) concentration was enhanced in the cells at the N and S poles, but particularly at the the N pole. This suggested the possibility that the magnetic field might activate ALAD gene expression in R. sphaeroides IF012203 and result in enhanced porphyrin production. |
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Authors:
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Takehiro Utsunomiya; Yu-Ichi Yamane; Masanori Watanabe; Ken Sasaki |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of bioscience and bioengineering Volume: 95 ISSN: 1389-1723 ISO Abbreviation: J. Biosci. Bioeng. Publication Date: 2003 |
Date Detail:
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Created Date: 2005-10-19 Completed Date: 2005-11-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100888800 Medline TA: J Biosci Bioeng Country: Japan |
Other Details:
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Languages: eng Pagination: 401-4 Citation Subset: - |
Affiliation:
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Materials Science and Engineering, Graduate School of Engineering, Hiroshima Kokusai Gakuin University, 6-20-1 Nakano, Akiku, Hiroshima 739-0321, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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