English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
/persons/resource/persons103121

Raschdorf,  Oliver
Baumeister, Wolfgang / Molecular Structural Biology, Max Planck Institute of Biochemistry, Max Planck Society;

/persons/resource/persons78517

Plitzko,  Jürgen M.
Baumeister, Wolfgang / Molecular Structural Biology, Max Planck Institute of Biochemistry, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0023-C50E-7
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.