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The Keio collection is a collection of systematic single-gene knock-out mutants of E. coli K-12 done by the Functional Genomic Analysis of E. coli in Japan project .
These strains are currently available from a number of sources:
The National Institute of Genetics in Japan, or the E. coli Genetic Stock Center (CGSC).
The entire collection as a set can also be obtained from Open Biosystems
Alternatively, you can obtain the relevant plasmids and strains for doing the knockouts yourself from the CGSC (the "Wanner gene disruption kit").
- Baba T, Ara T, Hasegawa M, Takai Y, Okumura Y, Baba M, Datsenko KA, Tomita M, Wanner BL, and Mori H. Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants: the Keio collection. Mol Syst Biol. 2006;2:2006.0008. DOI:10.1038/msb4100050 |
- Datsenko KA and Wanner BL. One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products. Proc Natl Acad Sci U S A. 2000 Jun 6;97(12):6640-5. DOI:10.1073/pnas.120163297 |
- Email correspondence between John Cumbers and Wilson Wong.