Interference of mRNA function by sequence-specific endoribonuclease PemK.

  title={Interference of mRNA function by sequence-specific endoribonuclease PemK.},
  author={Junjie Zhang and Y Zhang and Ling Zhu and Motoo Suzuki and M. Inouye},
  journal={The Journal of biological chemistry},
  volume={279 20},
In Escherichia coli, programmed cell death is mediated through the system called "addiction module," which consists of a pair of genes encoding a stable toxin and a labile antitoxin. The pemI-pemK system is an addiction module present on plasmid R100. It helps to maintain the plasmid by post-segregational killing in E. coli population. Here we demonstrate that purified PemK, the toxin encoded by the pemI-pemK addiction module, inhibits protein synthesis in an E. coli cell-free system, whereas… CONTINUE READING
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