Isolation of the Buchnera aphidicola flagellum basal body complexes from the Buchnera membrane.

Isolation of the Buchnera aphidicola flagellum basal body complexes from the Buchnera membrane.
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DOI:
10.1371/journal.pone.0245710
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Taylor DW
Taylor DW
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Schepers MJ;Yelland JN;Moran NA;Taylor DW

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棉铃虫(Buchnera Aphidicola)是蚜虫的胞内细菌共生体,维持着仅600kbps的小基因组。Buchnera被认为只保留了与其蚜虫宿主共生相关的基因。奇怪的是,Buchnera基因组包含编码鞭毛基体部结构蛋白和鞭毛III型出口机械的基因簇。这些结构已被证明在Buchnera细胞上高度表达和大量存在。在Buchnera基因组中还没有发现可识别的致病因子或分泌蛋白,这种蛋白复合体与共生的相关性也是未知的。在这里,我们展示了从Buchnera细胞膜中分离出Buchnera鞭毛基体蛋白,证实了相对于Buchnera蛋白质组中的其他蛋白质,鞭毛基体蛋白的丰富。这将有助于研究Buchnera鞭毛结构的结构和功能,以及它在这种模式共生中的作用。
Buchnera aphidicola is an intracellular bacterial symbiont of aphids and maintains a small genome of only 600 kbps. Buchnera is thought to maintain only genes relevant to the symbiosis with its aphid host. Curiously, the Buchnera genome contains gene clusters coding for flagellum basal body structural proteins and for flagellum type III export machinery. These structures have been shown to be highly expressed and present in large numbers on Buchnera cells. No recognizable pathogenicity factors or secreted proteins have been identified in the Buchnera genome, and the relevance of this protein complex to the symbiosis is unknown. Here, we show isolation of Buchnera flagellum basal body proteins from the cellular membrane of Buchnera, confirming the enrichment of flagellum basal body proteins relative to other proteins in the Buchnera proteome. This will facilitate studies of the structure and function of the Buchnera flagellum structure, and its role in this model symbiosis.
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