Article
A nuclear-encoded sigma factor, Arabidopsis SIG6, recognizes sigma-70 type chloroplast promoters and regulates early chloroplast development in cotyledons.
The Plant journal : for cell and molecular biology - 1 Apr 2005
Ishizaki Yoko, Tsunoyama Yuichi, Hatano Kyoko, Ando Kohei, Kato Ko, Shinmyo Atsuhiko, Kobori Maki, Takeba Go, Nakahira Yoichi, Shiina Takashi
Abstract excerpt
Eubacterial-type multi-subunit plastid RNA polymerase (PEP) is responsible for the principal transcription activity in chloroplasts. PEP is composed of plastid-encoded core subunits and one of multiple nuclear-encoded sigma factors that confer promoter specificity on PEP. Thus, the replacement of sigma factors associated with PEP has been assumed to be a major mechanism for the switching of transcription patterns...
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