Agrobacterium transcriptional regulator Ros is a prokaryotic zinc finger protein that regulates the plant oncogene ipt.

@article{Chou1998AgrobacteriumTR,
  title={Agrobacterium transcriptional regulator Ros is a prokaryotic zinc finger protein that regulates the plant oncogene ipt.},
  author={Amy Y. Chou and J Archdeacon and Clarence I. Kado},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1998},
  volume={95 9},
  pages={5293-8}
}
Virulence genes of Agrobacterium tumefaciens are under the control of positive and negative transcriptional regulators. We found that the transcriptional regulator Ros controls expression of the plant oncogene ipt, which encodes isopentenyl transferase, in A. tumefaciens. This enzyme is involved in biosynthesis of the plant growth hormone cytokinin in the host plant. An ipt promoter::cat reporter gene fusion showed a 10-fold increase in ipt promoter activity in A. tumefaciens ros mutant strains… CONTINUE READING

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