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  A Tailored galK Counterselection System for Efficient Markerless Gene Deletion and Chromosomal Tagging in Magnetospirillum gryphiswaldense

Raschdorf, O., Plitzko, J. M., Schüler, D., & Müller, F. D. (2014). A Tailored galK Counterselection System for Efficient Markerless Gene Deletion and Chromosomal Tagging in Magnetospirillum gryphiswaldense. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 80(14), 4323-4330. doi:10.1128/AEM.00588-14.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-C50E-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-C50F-5
Genre: Journal Article

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 Creators:
Raschdorf, Oliver1, Author              
Plitzko, Jürgen M.1, Author              
Schüler, Dirk2, Author
Müller, Frank D.2, Author
Affiliations:
1Baumeister, Wolfgang / Molecular Structural Biology, Max Planck Institute of Biochemistry, Max Planck Society, ou_1565142              
2external, ou_persistent22              

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Free keywords: GRAM-NEGATIVE BACTERIA; MAGNETOSOME PROTEINS; MAGNETITE BIOMINERALIZATION; MAGNETOTACTIC BACTERIA; EXPRESSION; POLY(3-HYDROXYBUTYRATE); CONSTRUCTION; MUTAGENESIS; FILAMENTS; PARTICLES
 Abstract: Magnetotactic bacteria have emerged as excellent model systems to study bacterial cell biology, biomineralization, vesicle formation, and protein targeting because of their ability to synthesize single-domain magnetite crystals within unique organelles (magnetosomes). However, only few species are amenable to genetic manipulation, and the limited methods for site-specific mutagenesis are tedious and time-consuming. Here, we report the adaptation and application of a fast and convenient technique for markerless chromosomal manipulation of Magnetospirillum gryphiswaldense using a single antibiotic resistance cassette and galK-based counterselection for marker recycling. We demonstrate the potential of this technique by genomic excision of the phbCAB operon, encoding enzymes for polyhydroxyalkanoate (PHA) synthesis, followed by chromosomal fusion of magneto-some-associated proteins to fluorescent proteins. Because of the absence of interfering PHA particles, these engineered strains are particularly suitable for microscopic analyses of cell biology and magnetosome biosynthesis.

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Language(s): eng - English
 Dates: 2014-07
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: ISI: 000338706800026
DOI: 10.1128/AEM.00588-14
 Degree: -

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Title: APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Source Genre: Journal
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Publ. Info: 1752 N ST NW, WASHINGTON, DC 20036-2904 USA : AMER SOC MICROBIOLOGY
Pages: - Volume / Issue: 80 (14) Sequence Number: - Start / End Page: 4323 - 4330 Identifier: ISSN: 0099-2240