E. coli K12 KS1000Product information
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DescriptionA suspension of E. coli K12 KS1000 which has been grown in M63 or M9 minimal glucose medium and brought to 50% glycerol. This strain is deficient in the Prc protease, a periplasmic protease (formerly known as Tsp, tail-specific protease). The Prc protease can degrade cytoplasmically expressed proteins when the cells are lysed to make a crude extract, and presumably it can degrade proteins expressed in the periplasm as well.
GenotypeF' lacIq lac+ pro+/ ara Δ(lac-pro) Δ(tsp)= Δ(prc)::KanR eda51::Tn10(TetR) gyrA(NalR) rpoB thi-1 argE(am)
Properties and Usage
- KS1000 is EcoK r+m+, so plasmids have to be modified (i.e., come from an m+ strain such as TB1, JM83, JM107, etc.) in order to get transformants.
- Silber, K.R., Keiler, K.C. and Sauer, R.T. (1992). Proc. Natl. Acad. Sci. USA. 89, 295-299.
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