The ycf27 genes from cyanobacteria and eukaryotic algae: distribution and implications for chloroplast evolution.
The ycf27 genes from cyanobacteria and eukaryotic algae: distribution and implications for chloroplast evolution.
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蓝藻和真核藻类的 ycf27 基因：分布及其对叶绿体进化的影响。
DOI：
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发表时间：
2002
影响因子：
2.1
通讯作者：
C. Mullineaux
中科院分区：
文献类型：
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作者：
M. Ashby;J. Houmard;C. Mullineaux
对丝状蓝藻毒杆菌PCC 7601的两个ycf27基因进行了克隆和测序。这两个基因，以前被指定为rpaA和rpaB，编码“OmpR”家族的推定转录调节因子。在聚胞藻PCC 6803中，同源基因分别与藻胆异构体向光系统（PS） I和PSII传递激发能的调控有关。对platulina Spirulina， Dactylococcopsis salina和Synechococcus pcc7002的部分克隆也进行了测序。一份蛋白质之间的身份表证实，RpaB与藻类的ycf27蛋白属于同一家族。然而，RpaA是一种完全不同的蛋白质，应该失去ycf27的名称。真核藻类质体基因组中rpaB的缺失与藻胆蛋白的缺失有关，因此该基因在藻类中的作用可能与蓝藻中相似。讨论了叶绿体进化的意义以及在质体基因组中同源组氨酸激酶基因的可能同一性。
The two ycf27 genes from the filamentous cyanobacterium Tolypothrix PCC 7601 have been cloned and sequenced. These two genes, previously designated rpaA and rpaB, encode putative transcriptional regulators of the 'OmpR' family. In Synechocystis PCC 6803, homologous genes have been linked to the regulation of transfer of excitation energy from the phycobilisome to photosystem (PS) I and PSII respectively. Partial clones from Spirulina platensis, Dactylococcopsis salina and Synechococcus PCC 7002 have also been sequenced. A table of identity between the proteins confirms that RpaB belongs in the same family as the algal ycf27 proteins. However, RpaA is a rather different protein and should lose the designation ycf27. The loss of rpaB from the plastid genomes of eukaryotic algae is associated with the loss of phycobiliproteins, so it is likely that this gene performs a similar role in algae to that in cyanobacteria. The implications for chloroplast evolution are discussed along with the possible identity of the cognate histidine kinase gene in the plastid genomes.