Journal
JOURNAL OF MICROBIOLOGY
Volume 59, Issue 12, Pages 1067-1074Publisher
MICROBIOLOGICAL SOCIETY KOREA
DOI: 10.1007/s12275-021-1565-y
Keywords
transposon insertion site sequencing; transposon mutagenesis; sequencing library; negative screening; fitness; synthetic lethality
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Transposon insertion site sequencing (TIS) is a powerful technique for determining the insertion profile of a transposon mutant library, providing insights into the fitness contributions of genetic loci in bacterial genomes under specific growth conditions. Despite being relatively new, TIS has emerged as a crucial tool in bacterial genetics research.
Transposon insertion site sequencing (TIS) is a technique that determines the insertion profile of a transposon mutant library by massive parallel sequencing of transposon-genomic DNA junctions. Because the transposon insertion profile reflects the abundance of each mutant in the library, it provides information to assess the fitness contribution of each genetic locus of a bacterial genome in a specific growth condition or strain background. Although introduced only about a dozen years ago, TIS has become an important tool in bacterial genetics that provides clues to study biological functions and regulatory mechanisms. Here, I describe a protocol for generating high density transposon insertion mutant libraries and preparing Illumina sequencing samples for mapping the transposon junctions of the transposon mutant libraries using Pseudomonas aeruginosa as an example.
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