The mutant of sll1961, which encodes a putative transcriptional regulator, has a defect in regulation of photosystem stoichiometry in the cyanobacterium Synechocystis sp PCC 6803
スポンサーリンク
概要
- 論文の詳細を見る
In acclimation to changing light environments, photosynthetic organisms modulate the ratio of two photosynthetic reaction centers (photosystem I and photosystem II). Two mutants, which could not modulate photosystem stoichiometry upon the shift to high light, were isolated from mutants created by random transposon mutagenesis. Measurements of chlorophyll fluorescence and analysis of the reaction center subunits of photosystem I through Western blotting in these mutants revealed that the content of photosystem I could not be suppressed under high-light condition. In these mutants, transposon was inserted to sll1961, which is homologous to the gene of gluconate operon transcriptional repressor (GntR) in Bacillus anthracis A2012. DNA microarray analysis revealed that the expression of sll1773 was drastically induced in the sll1961 mutant upon exposure to high light for 3 h. Our results demonstrate that a novel transcriptional regulator, Sll1961, and its possible target protein, Sll1773, may be responsible for the regulation of photosystem stoichiometry in response to high light.
論文 | ランダム
- ハンガリー経済の現状と課題--EU加盟に向けて
- フランスにおける経済構造改革の進捗と課題
- 産地から見た業務生鮮用野菜の産地間連携の構築 (特集 「食」をめぐるステークホルダー--主体間連携をどう構築するか)
- Structure of a Novel Sialooligosaccharide from the Urine of a Patient with Mucolipidosis
- 経営のフィールド 医療法人財団順和会山王病院理事長 高木邦格氏 マイナス改定にも揺るがない「強い組織体」を築き上げる