| Inducible expression of transmembrane proteins on bacterial magnetic particles in Magnetospirillum magneticum AMB-1. | |
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MedLine Citation:
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PMID: 20038711 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Bacterial magnetic particles (BacMPs) produced by the magnetotactic bacterium Magnetospirillum magneticum AMB-1 are used for a variety of biomedical applications. In particular, the lipid bilayer surrounding BacMPs has been reported to be amenable to the insertion of recombinant transmembrane proteins; however, the display of transmembrane proteins in BacMP membranes remains a technical challenge due to the cytotoxic effects of the proteins when they are overexpressed in bacterial cells. In this study, a tetracycline-inducible expression system was developed to display transmembrane proteins on BacMPs. The expression and localization of the target proteins were confirmed using luciferase and green fluorescent protein as reporter proteins. Gene expression was suppressed in the absence of anhydrotetracycline, and the level of protein expression could be controlled by modulating the concentration of the inducer molecule. This system was implemented to obtain the expression of the tetraspanin CD81. The truncated form of CD81 including the ligand binding site was successfully displayed at the surface of BacMPs by using Mms13 as an anchor protein and was shown to bind the hepatitis C virus envelope protein E2. These results suggest that the tetracycline-inducible expression system described here will be a useful tool for the expression and display of transmembrane proteins in the membranes of BacMPs. |
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Authors:
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Tomoko Yoshino; Akiko Shimojo; Yoshiaki Maeda; Tadashi Matsunaga |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-12-28 |
Journal Detail:
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Title: Applied and environmental microbiology Volume: 76 ISSN: 1098-5336 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-02-08 Completed Date: 2010-04-02 Revised Date: 2010-09-28 |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: United States |
Other Details:
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Languages: eng Pagination: 1152-7 Citation Subset: IM |
Affiliation:
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Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan. y-tomoko@cc.tuat.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Antigens, CD
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biosynthesis,
genetics Bacterial Proteins / biosynthesis*, genetics* Base Sequence DNA Primers / genetics Genes, Reporter Genetic Vectors Green Fluorescent Proteins / biosynthesis, genetics Lipid Bilayers Magnetics Magnetosomes / metabolism Magnetospirillum / genetics*, metabolism* Membrane Proteins / biosynthesis*, genetics* Plasmids / genetics Protein Engineering Recombinant Proteins / biosynthesis, genetics Tetracycline / pharmacology Viral Envelope Proteins / genetics, metabolism |
| Chemical | |
Reg. No./Substance:
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0/Antigens, CD; 0/Bacterial Proteins; 0/CD81 antigen; 0/DNA Primers; 0/Lipid Bilayers; 0/Membrane Proteins; 0/Recombinant Proteins; 0/Viral Envelope Proteins; 147336-22-9/Green Fluorescent Proteins; 157184-61-7/glycoprotein E2, Hepatitis C virus; 60-54-8/Tetracycline |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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