Transposon Mutagenesis in Desulfovibrio Desulfuricans: Development of a Random Mutagenesis Tool from Tn7
Overview
Microbiology
Authors
Affiliations
The transposons Tn5, Tn7, Tn9, and Tn10 or their derivatives have been examined for transposition in the sulfate-reducing bacterium Desulfovibrio desulfuricans G20. Tn7 inserted with a frequency of 10(-4) to 10(-3) into a unique attachment site that shows strong homology with those sites identified in other gram-negative bacteria. Inactivation of the tnsD gene in Tn7, encoding the function directing insertion into the unique site, yielded a derivative that transposed essentially randomly with a frequency of ca. 10(-6) per donor. Derivatives of Tn5, but not wild-type Tn5, were also found to undergo random transposition at a similar frequency. No evidence was obtained for transposition of Tn9 or Tn10.
Microbial conversion of choline to trimethylamine requires a glycyl radical enzyme.
Craciun S, Balskus E Proc Natl Acad Sci U S A. 2012; 109(52):21307-12.
PMID: 23151509 PMC: 3535645. DOI: 10.1073/pnas.1215689109.
Detecting motifs and patterns at mobile genetic element insertion site.
Dev B, Malik A, Rawal K Bioinformation. 2012; 8(16):777-86.
PMID: 23055629 PMC: 3449389. DOI: 10.6026/97320630008777.
Thioredoxin is involved in U(VI) and Cr(VI) reduction in Desulfovibrio desulfuricans G20.
Li X, Krumholz L J Bacteriol. 2009; 191(15):4924-33.
PMID: 19482922 PMC: 2715717. DOI: 10.1128/JB.00197-09.
Li X, Krumholz L J Bacteriol. 2007; 189(10):3705-11.
PMID: 17337573 PMC: 1913334. DOI: 10.1128/JB.01913-06.
Groh J, Luo Q, Ballard J, Krumholz L Appl Environ Microbiol. 2005; 71(11):7064-74.
PMID: 16269742 PMC: 1287673. DOI: 10.1128/AEM.71.11.7064-7074.2005.