UNIT 13.3 Genome-Wide Transposon Mutagenesis in Yeast
Published Online: 1 MAY 2001
Copyright © 2003 by John Wiley and Sons, Inc.
Lab Protocol Title
Current Protocols in Molecular Biology
How to Cite
Kumar, A. and Snyder, M. 2001. Genome-Wide Transposon Mutagenesis in Yeast. Current Protocols in Molecular Biology. 51:13.3.1–13.3.15.
- Published Online: 1 MAY 2001
- Published Print: JUL 2000
This unit provides comprehensive protocols for the use of insertional libraries generated by shuttle mutagenesis. From the basic protocol, a small aliquot of insertional library DNA may be used to mutagenize yeast, producing strains containing a single transposon insertion within a transcribed and translated region of the genome. This transposon-mutagenized bank of yeast strains may be screened for any desired mutant phenotype. Alternatively, since the transposon contains a reporter gene lacking its start codon and promoter, transposon-tagged strains may also be screened for specific patterns of gene expression. Strains of interest may be characterized by vectorette PCR (protocol provided) in order to locate the precise genomic site of transposon insertion within each mutant. A method by which Cre/lox recombination may be used to reduce the transposon in yeast to a small insertion element encoding an epitope tag is described. This tag serves as a tool by which transposon-mutagenized gene products may be analyzed further (e.g., localized to a discrete subcellular site).