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A Mini-ISY100 Transposon Delivery System Effective in γ Proteobacteria

Overview
Journal Front Microbiol
Specialty Microbiology
Date 2019 Mar 16
PMID 30873132
Citations 4
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Abstract

Transposons are invaluable biological tools for the genetic manipulation of microorganisms. ISY100 from sp. PCC6803 is a member of the Tc1//IS superfamily, and is characterized by high transposition efficiency and a strong preference for TA target sequences. In this paper, we describe the design and application of a mini-ISY100 suicide vector for the creation of stable random transposon insertion libraries. The system was successfully applied in seven species belonging to four different orders of γ proteobacteria. In all cases, delivery using conjugation consistently showed the highest transposition efficiency compared to chemical transformation or electroporation. We determined the frequency of transposon insertions in all the species and proved the utility of the system by identifying genes involved in colony coloration in . The ease and the efficiency of the protocol developed here allow the creation of complete knock-out libraries in an extensive range of host microorganisms in less than a week with no requirement for preparatory modification.

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