Degradation of psaB gene product, the reaction center subunit of photosystem I, is caused during photoinhibition of photosystem I: Possible involvement of active oxygen species

Kintake Sonoike*

*この研究の対応する著者

研究成果: Article査読

105 被引用数 (Scopus)

抄録

Specific degradation of psaB gene product, one of the two large subunits of photosystem I (PS I) reaction-center, was observed during photoinhibition of PS I. In the in vitro photoinhibition using spinach thylakoid membranes, the degradation of psaB gene product gave rise to fragments of 51 kDa and 45 kDa. n-Propyl gallate, a scavenger of active oxygen species, suppressed the generation of these fragments. Addition of methyl viologen, which protects PS I from photoinhibition but increases the production of superoxide, suppressed the generation of 51 kDa fragment but increased the generation of 45 kDa fragment. It was concluded that interaction of active oxygen species with reduced electron acceptor in PS I results in inactivation of PS I and in generation of 51 kDa fragment. On the other hand, 45 kDa fragment was generated solely by the presence of active oxygen species independent of the inhibition of PS I activity.

本文言語English
ページ(範囲)157-164
ページ数8
ジャーナルPlant Science
115
2
DOI
出版ステータスPublished - 1996
外部発表はい

ASJC Scopus subject areas

  • 遺伝学
  • 農業および作物学
  • 植物科学

フィンガープリント

「Degradation of psaB gene product, the reaction center subunit of photosystem I, is caused during photoinhibition of photosystem I: Possible involvement of active oxygen species」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル