Murakami Reiko, Ifuku Kentaro, Takabayashi Atsushi, Shikanai Toshiharu, Endo Tsuyoshi, Sato Fumihiko
Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, 606-8502, Kyoto, Japan.
FEBS Lett. 2002 Jul 17;523(1-3):138-42. doi: 10.1016/s0014-5793(02)02963-0.
A 33-kDa protein component of the oxygen-evolving complex in photosystem II is essential for photosynthesis, and it has been believed that mutants with deletion of this 33-kDa protein are not found in higher plants. We report here the first isolation of an Arabidopsis thaliana mutant with a defect in one of the genes for the 33-kDa proteins, psbO, and an intact gene (psbO2). This mutant showed considerable growth retardation, suggesting that there is a functional difference between psbO and psbO2.
光系统II中放氧复合体的一个33千道尔顿的蛋白质组分对光合作用至关重要,并且人们一直认为在高等植物中未发现缺失该33千道尔顿蛋白质的突变体。我们在此报告首次分离出拟南芥突变体,该突变体中33千道尔顿蛋白质的一个基因(psbO)存在缺陷,而另一个基因(psbO2)完整。该突变体表现出明显的生长迟缓,这表明psbO和psbO2之间存在功能差异。