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2
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Control of photosystem genes in Rhodobacter capsulatus.荚膜红细菌中光系统基因的调控
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Nucleotide sequence and characterization of the Rhodobacter capsulatus hvrB gene: HvrB is an activator of S-adenosyl-L-homocysteine hydrolase expression and is a member of the LysR family.荚膜红细菌hvrB基因的核苷酸序列及特性：HvrB是S-腺苷-L-高半胱氨酸水解酶表达的激活剂，属于LysR家族成员。
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Rhodobacter capsulatus contains a novel cb-type cytochrome c oxidase without a CuA center.荚膜红细菌含有一种不含CuA中心的新型cb型细胞色素c氧化酶。
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Identification and molecular genetic characterization of a sensor kinase responsible for coordinately regulating light harvesting and reaction center gene expression in response to anaerobiosis.负责响应厌氧状态协同调节光捕获和反应中心基因表达的一种传感激酶的鉴定及分子遗传学特征分析
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深红螺菌中参与有氧呼吸和光合作用基因表达的senC基因的克隆与特性分析

Cloning and characterization of senC, a gene involved in both aerobic respiration and photosynthesis gene expression in Rhodobacter capsulatus.

作者信息

Buggy J, Bauer C E

机构信息

Department of Biology, Indiana University, Bloomington 47405, USA.

出版信息

J Bacteriol. 1995 Dec;177(23):6958-65. doi: 10.1128/jb.177.23.6958-6965.1995.

DOI:10.1128/jb.177.23.6958-6965.1995
PMID:7592491
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC177566/
Abstract

The purple nonsulfur photosynthetic eubacterium Rhodobacter capsulatus is a versatile organism that can obtain cellular energy by several means, including the capture of light energy for photosynthesis as well as the use of light-independent respiration, in which molecular oxygen serves as a terminal electron acceptor. In this study, we have identified and characterized a novel gene, senC, mutations in which affect respiration as well as the induction of photosynthesis gene expression. The protein coded by senC exhibits 33% sequence identity to the yeast nucleus-encoded protein SCO1, which is thought to be a mitochondrion-associated cytochrome c oxidase assembly factor. Like yeast SCO1, SenC is required for optimal cytochrome c oxidase activity in aerobically grown R. capsulatus cells. We further show that senC is required for maximal induction from the puf and puh operons, which encode the structural polypeptides of the light-harvesting and reaction center complexes.

摘要

紫色非硫光合真细菌荚膜红细菌是一种多功能生物，它可以通过多种方式获取细胞能量，包括捕获光能进行光合作用以及利用不依赖光的呼吸作用，其中分子氧作为末端电子受体。在本研究中，我们鉴定并表征了一个新基因senC，其突变会影响呼吸作用以及光合作用基因表达的诱导。senC编码的蛋白质与酵母核编码蛋白SCO1具有33%的序列同一性，SCO1被认为是一种与线粒体相关的细胞色素c氧化酶组装因子。与酵母SCO1一样，SenC是需氧生长的荚膜红细菌细胞中最佳细胞色素c氧化酶活性所必需的。我们进一步表明，senC是从puf和puh操纵子实现最大诱导所必需的，puf和puh操纵子编码光捕获和反应中心复合物的结构多肽。