THE PUFQ GENE-PRODUCT OF RHODOBACTER-CAPSULATUS IS ESSENTIAL FOR FORMATION OF B800-850 LIGHT-HARVESTING COMPLEXES
THE PUFQ GENE-PRODUCT OF RHODOBACTER-CAPSULATUS IS ESSENTIAL FOR FORMATION OF B800-850 LIGHT-HARVESTING COMPLEXES
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DOI：
10.1007/bf01570579
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发表时间：
1989-08-01
影响因子：
2.6
通讯作者：
BEATTY, JT
中科院分区：
文献类型：
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作者：
FORREST, ME;ZUCCONI, AP;BEATTY, JT
荚膜红杆菌的 puf 操纵子含有编码光合色素蛋白复合物中结构蛋白的基因，以及最近发现的 pufQ 基因。我们研究了pufQ基因产物的功能，发现它对于成熟B800-850光捕获复合物的形成至关重要。然而，我们还表明 pufQ 似乎不会影响 B800-850 复杂结构基因的转录、mRNA 积累或翻译。 因此，pufQ 基因产物的作用是翻译后的，它可能在将色素和蛋白质组装成光化学活性 B800-850 复合物以及细菌叶绿素 a 生物合成中发挥作用 (2)。
The puf operon of Rhodobacter capsulatus contains genes that encode structural proteins found in photosynthetic pigment-protein complexes, as well as the recently discovered pufQ gene. We have investigated the function of the pufQ gene product and found that it is essential for the formation of mature B800-850 light-harvesting complexes. However, we have also shown that pufQ does not seem to affect transcription, mRNA accumulation, or translation of the B800-850 complex structural genes. Therefore, the role of the pufQ gene product is posttranslational, and it may function in assembly of pigments and proteins into photochemically active B800-850 complexes, as well as in bacteriochlorophyll a biosynthesis (2).