Novel nuclear‐encoded proteins interacting with a plastid sigma factor, Sig1, in Arabidopsis thaliana 1

@article{Morikawa2002NovelNP,
  title={Novel nuclear‐encoded proteins interacting with a plastid sigma factor, Sig1, in Arabidopsis thaliana
1},
  author={K. Morikawa and T. Shiina and S. Murakami and Y. Toyoshima},
  journal={FEBS Letters},
  year={2002},
  volume={514}
}
Sigma factor binding proteins are involved in modifying the promoter preferences of the RNA polymerase in bacteria. We found the nuclear encoded protein (SibI) that is transported into chloroplasts and interacts specifically with the region 4 of Sig1 in Arabidopsis. SibI and its homologue, T3K9.5 are novel proteins, which are not homologous to any protein of known function. The expression of sibI was tissue specific, light dependent, and developmentally timed. We suggest the transcriptional… Expand
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